Paul Mackerras [Mon, 9 Jun 2008 04:01:46 +0000 (14:01 +1000)]
powerpc: Remove arch/ppc and include/asm-ppc
All the maintained platforms are now in arch/powerpc, so the old
arch/ppc stuff can now go away.
Acked-by: Adrian Bunk <bunk@kernel.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Becky Bruce <becky.bruce@freescale.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Jochen Friedrich <jochen@scram.de> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: Jon Loeliger <jdl@freescale.com> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Peter Korsgaard <jacmet@sunsite.dk> Acked-by: Scott Wood <scottwood@freescale.com> Acked-by: Sean MacLennan <smaclennan@pikatech.com> Acked-by: Segher Boessenkool <segher@kernel.crashing.org> Acked-by: Stefan Roese <sr@denx.de> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
The out_leXX() family of functions are created with the macro
DEF_MMIO_OUT_LE() while the out_beXX() family are created with
DEF_MMIO_OUT_BE(). In what was perhaps a bit too much macro use, both of
these macros are in turn created via the macro DEF_MMIO_OUT().
For the LE versions, eventually they boil down to an asm that will look
something like this:
asm("sync; stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
The issue is that the "stwbrx" instruction only comes in an indexed, or
'x', version, in which the address is represented by the sum of two
registers (the "0,%2"). Unfortunately, gcc doesn't have a constraint for
an indexed memory reference. The "m" constraint allows both indexed and
offset, i.e. register plus constant, memory references and there is no
"stwbr" version for offset references. "m" also allows updating addresses
and there is no 'u' version of "stwbrx" like there is with "stwux".
The unused first operand to the asm is just to tell gcc that *addr is an
output of the asm. The address used is passed in a single register via the
third asm operand, and the index register is just hard coded as 0. This
means gcc is forced to put the address in a single register and can't use
index addressing, e.g. if one has the data in register 9, a base address in
register 3 and an index in register 4, gcc must emit code like "add 11,4,3;
stwbrx 9,0,11" instead of just "stwbrx 9,4,3". This costs an extra add
instruction and another register.
For gcc 4.0 and older, there doesn't appear to be anything that can be
done. But for 4.1 and newer, there is a 'Z' constraint. It does not allow
"updating" addresses, but does allow both indexed and offset addresses.
However, the only allowed constant offset is 0. We can then use the
undocumented 'y' operand modifier, which causes gcc to convert "0(reg)"
into the equivilient "0,reg" format that can be used with stwbrx.
This brings us the to problem with the BE version. In this case, the "stw"
instruction does have both indexed and non-indexed versions. The final asm
ends up looking like this:
asm("sync; stw%U0%X0 %1,%0" : "=m" (*addr) : "r" (val), "r" (addr));
The undocumented codes "%U0" and "%0X" will generate a 'u' if the memory
reference should be an auto-updating one, and an 'x' if the memory
reference is indexed, respectively. The third operand is unused, it's just
there because asm the code is reused from the LE version. However, gcc
does not know this, and generates unnecessary code to stick addr in a
register! To use the example from the LE version, gcc will generate "add
11,4,3; stwx 9,4,3". It is able to use the indexed address "4,3" for the
"stwx", but still thinks it needs to put 4+3 into register 11, which will
never be used.
This also ends up happening a lot for the offset addressing mode, where
common code like this: out_be32(&device_registers->some_register, data);
uses an instruction like "stw 9, 42(3)", where register 3 has the pointer
device_registers and 42 is the offset of some_register in that structure.
gcc will be forced to generate the unnecessary instruction "addi 11, 3, 42"
to put the address into a single (unused) register.
The in_* versions end up having these exact same problems as well.
Signed-off-by: Trent Piepho <tpiepho@freescale.com> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Andreas Schwab <schwab@suse.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
Michael Ellerman [Mon, 26 May 2008 02:12:32 +0000 (12:12 +1000)]
powerpc: Fix irq_alloc_host() reference counting and callers
When I changed irq_alloc_host() to take an of_node
(52964f87c64e6c6ea671b5bf3030fb1494090a48: "Add an optional
device_node pointer to the irq_host"), I botched the reference
counting semantics.
Stephen pointed out that it's irq_alloc_host()'s business if
it needs to take an additional reference to the device_node,
the caller shouldn't need to care.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Michael Ellerman [Mon, 26 May 2008 02:12:31 +0000 (12:12 +1000)]
powerpc: Rework qe_ic_init() so we can avoid freeing the irq_host
If we do the call to of_address_to_resource() first, then we don't
need to worry about freeing the irq_host (which the code doesn't do
currently anyway).
Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Michael Ellerman [Mon, 26 May 2008 02:12:30 +0000 (12:12 +1000)]
powerpc: Rework ipic_init() so we can avoid freeing the irq_host
If we do the call to of_address_to_resource() first, then we don't
need to worry about freeing the irq_host (which the code doesn't do
currently anyway).
Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Rune Torgersen [Fri, 23 May 2008 15:59:15 +0000 (01:59 +1000)]
powerpc: Check that TASK_SIZE does not overlap KERNEL_START
Make sure CONFIG_TASK_SIZE does not overlap CONFIG_KERNEL_START
This could happen when overriding settings to get 1GB lowmem, and would lead
to userland mysteriousely hanging.
This setting is only used by PPC32.
Signed-off-by: Rune Torgersen <runet@innovsys.com> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Stephen Rothwell [Fri, 23 May 2008 06:39:58 +0000 (16:39 +1000)]
platinumfb: Use linux/of_{device,platform}.h instead of asm
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Remi Machet [Fri, 16 May 2008 00:26:02 +0000 (10:26 +1000)]
powerpc: Add C2K to configuration
Support for the C2K cPCI Single Board Computer from GEFanuc
(PowerPC MPC7448 with a Marvell MV64460 chipset).
All features of the board are not supported yet, but the board
boots, flash works, all Ethernet ports are working and PCI
devices are all found (USB and SATA on PCI1 do not work yet).
Part 5 of 5: add the Kconfig entry for the C2K board.
Signed-off-by: Remi Machet <rmachet@slac.stanford.edu> Signed-off-by: Paul Mackerras <paulus@samba.org>
Remi Machet [Fri, 16 May 2008 00:25:28 +0000 (10:25 +1000)]
powerpc: Default configuration for C2K
Support for the C2K cPCI Single Board Computer from GEFanuc
(PowerPC MPC7448 with a Marvell MV64460 chipset).
All features of the board are not supported yet, but the board
boots, flash works, all Ethernet ports are working and PCI
devices are all found (USB and SATA on PCI1 do not work yet).
Part 4 of 5: this is the default config for the board. In this
configuration the kernel is going to try to boot from MTD
partition 3 on the NOR flash (see c2k.dts for details about
the partitioning of the flash).
Signed-off-by: Remi Machet <rmachet@slac.stanford.edu> Signed-off-by: Paul Mackerras <paulus@samba.org>
Remi Machet [Fri, 16 May 2008 19:31:04 +0000 (05:31 +1000)]
powerpc: C2K board driver
Support for the C2K cPCI Single Board Computer from GEFanuc
(PowerPC MPC7448 with a Marvell MV64460 chipset).
All features of the board are not supported yet, but the board
boots, flash works, all Ethernet ports are working and PCI
devices are all found (USB and SATA on PCI1 do not work yet).
Part 3 of 5: driver for the board. At this time it is very generic
and similar to its original, the driver for the prpmc2800.
Signed-off-by: Remi Machet <rmachet@slac.stanford.edu> Signed-off-by: Paul Mackerras <paulus@samba.org>
Remi Machet [Tue, 20 May 2008 20:50:10 +0000 (06:50 +1000)]
powerpc: Boot code for the C2K
Support for the C2K cPCI Single Board Computer from GEFanuc
(PowerPC MPC7448 with a Marvell MV64460 chipset).
All features of the board are not supported yet, but the board
boots, flash works, all Ethernet ports are working and PCI
devices are all found (USB and SATA on PCI1 do not work yet).
Part 2 of 5: support for the board in arch/powerpc/boot.
Signed-off-by: Remi Machet <rmachet@slac.stanford.edu> Signed-off-by: Paul Mackerras <paulus@samba.org>
Remi Machet [Tue, 20 May 2008 17:30:24 +0000 (03:30 +1000)]
powerpc: DTS file for the C2K
Support for the C2K cPCI Single Board Computer from GEFanuc
(PowerPC MPC7448 with a Marvell MV64460 chipset).
All features of the board are not supported yet, but the board
boots, flash works, all Ethernet ports are working and PCI
devices are all found (USB and SATA on PCI1 do not work yet).
Part 1 of 5: DTS file describing the board peripherals. As far as I
know all peripherals except the FPGA are listed in there (I did not
include the FPGA because a lot of work is needed there).
Signed-off-by: Remi Machet <rmachet@slac.stanford.edu> Signed-off-by: Paul Mackerras <paulus@samba.org>
CC arch/powerpc/sysdev/mpic.o
arch/powerpc/sysdev/mpic.c: In function 'mpic_alloc':
arch/powerpc/sysdev/mpic.c:1146: warning: suggest explicit braces to avoid ambiguous 'else'
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Nathan Lynch [Tue, 3 Jun 2008 22:30:54 +0000 (08:30 +1000)]
[POWERPC] Make walk_memory_resource available with MEMORY_HOTPLUG=n
The ehea driver was recently changed[1] to use walk_memory_resource() to
detect the system's memory layout. However, walk_memory_resource() is
available only when memory hotplug is enabled. So CONFIG_EHEA was
made to depend on MEMORY_HOTPLUG [2], but it is inappropriate for a
network driver to have such a dependency.
Make the declaration of walk_memory_resource() and its powerpc
implementation (ehea is powerpc-specific) unconditionally available.
During the next merge window, pci_name()'s return value will become
const, so use the new dev_set_name() instead to avoid the warning (from
linux-next):
arch/powerpc/kernel/pci_64.c: In function 'of_create_pci_dev':
arch/powerpc/kernel/pci_64.c:193: warning: passing argument 1 of 'sprintf' discards qualifiers from pointer target type
Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
[POWERPC] Fix incorrect enabling of VMX when building signal or user context
When building a signal or a ucontext, we can incorrectly set the MSR_VEC
bit of the kernel pt_regs->msr before returning to userspace if the task
-ever- used VMX.
This can lead to funny result if that stack used it in the past, then
"lost" it (ie. it wasn't enabled after a context switch for example)
and then called get_context. It can end up with VMX enabled and the
registers containing values from some other task.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Oleg Nesterov [Fri, 6 Jun 2008 18:31:39 +0000 (11:31 -0700)]
uml: activate_mm: remove the dead PF_BORROWED_MM check
use_mm() was changed to use switch_mm() instead of activate_mm(), since
then nobody calls (and nobody should call) activate_mm() with
PF_BORROWED_MM bit set.
As Jeff Dike pointed out, we can also remove the "old != new" check, it is
always true.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 6 Jun 2008 18:33:30 +0000 (11:33 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IB/ipath: Fix SM trap forwarding
IB/ehca: Reject send WRs only for RESET, INIT and RTR state
MAINTAINERS: Update NetEffect (iw_nes) entry
IB/ipath: Fix device capability flags
IB/ipath: Avoid test_bit() on u64 SDMA status value
Linus Torvalds [Fri, 6 Jun 2008 18:33:08 +0000 (11:33 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
x86/PCI: add workaround for bug in ASUS A7V600 BIOS (rev 1005)
PCI/x86: fix up PCI stuff so that PCI_GOANY supports OLPC
Linus Torvalds [Fri, 6 Jun 2008 18:31:55 +0000 (11:31 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/chrisw/lsm-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/chrisw/lsm-2.6:
capabilities: remain source compatible with 32-bit raw legacy capability support.
LSM: remove stale web site from MAINTAINERS
David Sterba [Fri, 6 Jun 2008 08:56:35 +0000 (10:56 +0200)]
ipwireless: Fix blocked sending
Packet sending is driven by two flags, tx_ready and tx_queued.
It was possible, that there were queued data for sending and
hardware was flagged as blocked but in fact it was not.
The tx_queued was indicator but should be really a counter else
first fragmented packet resets tx_queued flag, but there may be
pending packets which do not get sent.
New semantics:
tx_ready - set, if hw is ready to send packet, no packet is being
transferred right now
set the flag right at the place where data are copied
into hw memory and not earlier without checking if it
was succesful
tx_queued - count of enqueued packets, including fragments
Tested-by: Michal Rokos <michal.rokos@gmail.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Layton [Fri, 6 Jun 2008 05:47:00 +0000 (22:47 -0700)]
vm: add kzalloc_node() inline
To get zeroed out memory from a particular NUMA node. To be used by
sunrpc.
Signed-off-by: Jeff Layton <jlayton@redhat.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Tuttle [Fri, 6 Jun 2008 05:46:58 +0000 (22:46 -0700)]
pagemap: return EINVAL, not EIO, for unaligned reads of kpagecount or kpageflags
If the user tries to read from a position that is not a multiple of 8, or
read a number of bytes that is not a multiple of 8, they have passed an
invalid argument to read, for the purpose of reading these files. It's
not an IO error because we didn't encounter any trouble finding the data
they asked for.
Signed-off-by: Thomas Tuttle <ttuttle@google.com> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Tuttle [Fri, 6 Jun 2008 05:46:58 +0000 (22:46 -0700)]
pagemap: return map count, not reference count, in /proc/kpagecount
Since pagemap is all about examining pages mapped into processes' memory
spaces, it makes sense for kpagecount to return the map counts, not the
reference counts.
Signed-off-by: Thomas Tuttle <ttuttle@google.com> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Tim Gardner [Fri, 6 Jun 2008 05:46:55 +0000 (22:46 -0700)]
hdaps: fix module loading on Thinkpad T61P
Adds DMI system identifier for ThinkPad T61.
Originally written by Klaus S. Madsen.
Taken from http://launchpadlibrarian.net/10864950/hdaps-t61.patch
Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Signed-off-by: maximilian attems <max@stro.at> Cc: Klaus S. Madsen <ubuntu@hjernemadsen.org> Cc: Mark M. Hoffman <mhoffman@lightlink.com> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[NET]: Make /proc/net a symlink on /proc/self/net (v3)
introduced a /proc/self/net directory without bumping the corresponding
link count for /proc/self.
This patch replaces the static link count initializations with a call that
counts the number of directory entries in the given pid_entry table
whenever it is instantiated, and thus relieves the burden of manually
keeping the two in sync.
[akpm@linux-foundation.org: cleanup] Acked-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Adrian Bunk [Fri, 6 Jun 2008 05:46:48 +0000 (22:46 -0700)]
asm-m32r/uaccess.h must #include <asm/setup.h>
This patch fixes the following compile error caused by
commit 4016a1390d07f15b267eecb20e76a48fd5c524ef
(mm/nommu.c: return 0 from kobjsize with invalid objects):
/home/bunk/linux/kernel-2.6/git/linux-2.6/mm/nommu.c: In function 'kobjsize':
/home/bunk/linux/kernel-2.6/git/linux-2.6/mm/nommu.c:112: error: 'memory_end' undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/git/linux-2.6/mm/nommu.c:112: error: (Each undeclared identifier is reported only once
/home/bunk/linux/kernel-2.6/git/linux-2.6/mm/nommu.c:112: error: for each function it appears in.)
The patch also removes now no longer required memory_{start,end}
declarations inside access_ok().
Reported-by: Adrian Bunk <adrian.bunk@movial.fi> Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Michael Hennerich <Michael.Hennerich@analog.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Josef Bacik [Fri, 6 Jun 2008 05:46:47 +0000 (22:46 -0700)]
ext3: fix online resize bug
There is a bug when we are trying to verify that the reserve inode's
double indirect blocks point back to the primary gdt blocks. The fix is
obvious, we need to mod the gdb count by the addr's per block. You can
verify this with the following test case
Pekka Enberg [Fri, 6 Jun 2008 05:46:46 +0000 (22:46 -0700)]
nommu: fix ksize() abuse
The nommu binfmt code uses ksize() for pointers returned from do_mmap()
which is wrong. This converts the call-sites to use the nommu specific
kobjsize() function which works as expected.
Cc: Christoph Lameter <clameter@sgi.com> Cc: Matt Mackall <mpm@selenic.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Greg Ungerer <gerg@snapgear.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Jackson [Fri, 6 Jun 2008 05:46:45 +0000 (22:46 -0700)]
doc: document the kernel-doc conventions for kernel hackers
Provide documentation of the kernel-doc documentation conventions oriented
to kernel hackers.
Since I figure that there will be more people reading this
kernel-doc-nano-HOWTO.txt file who are kernel developers focused on the
rest of the kernel, than there will be readers of this file who are
documentation developers extracting that embedded kernel-doc
documentation, I have taken the liberty of making the new section added
here:
How to format kernel-doc comments
the first section of the kernel-doc-nano-HOWTO.txt file.
This first section is intended to introduce, motivate and provide basic
usage of the kernel-doc mechanism for kernel hackers developing other
portions of the kernel.
Signed-off-by: Paul Jackson <pj@sgi.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alan Cox [Fri, 6 Jun 2008 05:46:42 +0000 (22:46 -0700)]
MAINTAINERS: reiserfs entry is out of date
Signed-off-by: Alan Cox <alan@redhat.com> Cc: Edward Shishkin <edward.shishkin@gmail.com> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Chris Mason <chris.mason@oracle.com> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
atmel_serial: filter out FP during baud rate detection
I made a change to u-boot that used the FP (Fractional Part) field of BRGR
to achieve more accurate baud rate generation. Unfortunately, the
atmel_serial driver looks at the whole BRGR register when trying to detect
the baud rate that the port is currently running at, so setting FP to a
nonzero value breaks the baud rate detection.
I'll sit on the u-boot patch for a while longer, but this is clearly a
bug in the atmel_serial driver which should be fixed.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Nadia Derbey [Fri, 6 Jun 2008 05:46:38 +0000 (22:46 -0700)]
ipc: only output msgmni value at boot time
When posting:
[PATCH 1/8] Scaling msgmni to the amount of lowmem
(see http://lkml.org/lkml/2008/2/11/171), I have added a KERN_INFO message
that is output each time msgmni is recomputed.
In http://lkml.org/lkml/2008/4/29/575 Tony Luck complained that this
message references an ipc namespace address that is useless.
I first thought of using an audit_log instead of a printk, as suggested by
Serge Hallyn. But unfortunately, we do not have any other information
than the namespace address to provide here too. So I chose to move the
message and output it only at boot time, removing the reference to the
namespace.
Signed-off-by: Nadia Derbey <Nadia.Derbey@bull.net> Cc: Pierre Peiffer <peifferp@gmail.com> Cc: Manfred Spraul <manfred@colorfullife.com> Acked-by: Tony Luck <tony.luck@intel.com> Cc: "Serge E. Hallyn" <serue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Nadia Derbey [Fri, 6 Jun 2008 05:46:36 +0000 (22:46 -0700)]
ipc: restore MSGPOOL original value
When posting:
[PATCH 1/8] Scaling msgmni to the amount of lowmem
(see http://article.gmane.org/gmane.linux.kernel/637849/) I changed the
MSGPOOL value to make it fit what is said in the man pages (i.e. a size
in bytes).
But Michael Kerrisk rightly complained that this change could affect the
ABI. So I'm posting this patch to make MSGPOOL expressed back in Kbytes.
Michael, on his side, has fixed the man page.
Signed-off-by: Nadia Derbey <Nadia.Derbey@bull.net> Cc: Pierre Peiffer <peifferp@gmail.com> Cc: Manfred Spraul <manfred@colorfullife.com> Acked-by: Michael Kerrisk <mtk.manpages@googlemail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jan Engelhardt [Fri, 6 Jun 2008 05:46:34 +0000 (22:46 -0700)]
vt: fix background color on line feed, DEC invert
Original report: """I used to force my console to black-on-white by the
command `setterm -inversescreen on`. In 2.6.26-rc4, I get lots of black
background characters."""
Another addendum to commit c9e587ab. This was previously missed out since
I was not aware of what vc_decscnm was for.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Reported-by: <thunder7@xs4all.nl> Tested-by: <thunder7@xs4all.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
CHIKAMA masaki [Fri, 6 Jun 2008 05:46:33 +0000 (22:46 -0700)]
cpufreq: fix null object access on Transmeta CPU
If cpu specific cpufreq driver(i.e. longrun) has "setpolicy" function,
governor object isn't set into cpufreq_policy object at "__cpufreq_set_policy"
function in driver/cpufreq/cpufreq.c .
This causes a null object access at "store_scaling_setspeed" and
"show_scaling_setspeed" function in driver/cpufreq/cpufreq.c when reading or
writing through /sys interface (ex. cat
/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed)
Krzysztof Helt [Fri, 6 Jun 2008 05:46:33 +0000 (22:46 -0700)]
fbcon: fix wrong vmode bits copied on console switch
The interlaced and double line mode bits should not be copied to new
console when the console is switched. Otherwise, the new console may be
set to incorrect refresh rate.
Also, the x and y offsets does not need to be copied.
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The same occurs when add a nonexistent mem.
This patch will fix this bug.
And when *buf == "", the check is unneeded.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Acked-by: Paul Jackson <pj@sgi.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Tuttle [Fri, 6 Jun 2008 05:46:31 +0000 (22:46 -0700)]
pagemap: fix bug in add_to_pagemap, require aligned-length reads of /proc/pid/pagemap
Fix a bug in add_to_pagemap. Previously, since pm->out was a char *,
put_user was only copying 1 byte of every PFN, resulting in the top 7
bytes of each PFN not being copied. By requiring that reads be a multiple
of 8 bytes, I can make pm->out and pm->end u64*s instead of char*s, which
makes put_user work properly, and also simplifies the logic in
add_to_pagemap a bit.
[akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Thomas Tuttle <ttuttle@google.com> Cc: Matt Mackall <mpm@selenic.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pavel Emelyanov [Fri, 6 Jun 2008 05:46:28 +0000 (22:46 -0700)]
devscgroup: make white list more compact in some cases
Consider you added a 'c foo:bar r' permission to some cgroup and then (a
bit later) 'c'foo:bar w' for it. After this you'll see the
c foo:bar r
c foo:bar w
lines in a devices.list file.
Another example - consider you added 10 'c foo:bar r' permissions to some
cgroup (e.g. by mistake). After this you'll see 10 c foo:bar r lines in
a list file.
This is weird. This situation also has one more annoying consequence.
Having many items in a white list makes permissions checking slower, sine
it has to walk a longer list.
The proposal is to merge permissions for items, that correspond to the
same device.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pavel Emelyanov [Fri, 6 Jun 2008 05:46:26 +0000 (22:46 -0700)]
devscgroup: relax task to dev_cgroup conversion
Two functions, that need to get a device_cgroup from a task (they are
devcgroup_inode_permission and devcgroup_inode_mknod) make it in a strange
way:
They get a css_set from task, then a subsys_state from css_set, then a
cgroup from the state and then a subsys_state again from the cgroup.
Besides, the devices_subsys_id is read from memory, whilst there's a
enum-ed constant for it.
Optimize this part a bit:
1. Get the subsys_stats form the task and be done - no 2 extra
dereferences,
2. Use the device_subsys_id constant, not the value from memory
(i.e. one less dereference).
Found while preparing 2.6.26 OpenVZ port.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Acked-by: Paul Menage <menage@google.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: James Morris <jmorris@namei.org> Cc: Chris Wright <chrisw@sous-sol.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Akinobu Mita [Fri, 6 Jun 2008 05:46:21 +0000 (22:46 -0700)]
introduce memory_read_from_buffer()
This patch introduces memory_read_from_buffer().
The only difference between memory_read_from_buffer() and
simple_read_from_buffer() is which address space the function copies to.
simple_read_from_buffer copies to user space memory.
memory_read_from_buffer copies to normal memory.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Doug Warzecha <Douglas_Warzecha@dell.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Matt Domsch <Matt_Domsch@dell.com> Cc: Abhay Salunke <Abhay_Salunke@dell.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Markus Rechberger <markus.rechberger@amd.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Bob Moore <robert.moore@intel.com> Cc: Thomas Renninger <trenn@suse.de> Cc: Len Brown <lenb@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Cc: Michael Holzheu <holzheu@de.ibm.com> Cc: Brian King <brking@us.ibm.com> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Cc: Andrew Vasquez <linux-driver@qlogic.com> Cc: Seokmann Ju <seokmann.ju@qlogic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Harvey Harrison [Fri, 6 Jun 2008 05:46:19 +0000 (22:46 -0700)]
lib: export bitrev16
Bluetooth will be able to use this.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Dave Young <hidave.darkstar@gmail.com> Cc: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jean Delvare [Fri, 6 Jun 2008 05:46:18 +0000 (22:46 -0700)]
rtc-ds1374: rename device to just "ds1374"
Change the name of the device from "rtc-ds1374" to just "ds1374", to match
what all other RTC drivers do. I seem to remember that this name was
chosen to avoid possible confusion with an older ds1374 driver, but that
driver was removed 3 months ago.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Kumar Gala <galak@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Fri, 6 Jun 2008 05:46:13 +0000 (22:46 -0700)]
uml: memcpy export needs to follow host declaration
x86_64 defines either memcpy or __memcpy depending on the gcc version, and
it looks like UML needs to follow that in its exporting.
Cc: Gabriel C <nix.or.die@googlemail.com> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Tom Spink [Fri, 6 Jun 2008 05:46:12 +0000 (22:46 -0700)]
uml: deal with inaccessible address space start
This patch makes os_get_task_size locate the bottom of the address space,
as well as the top. This is for systems which put a lower limit on mmap
addresses. It works by manually scanning pages from zero onwards until a
valid page is found.
Because the bottom of the address space may not be zero, it's not
sufficient to assume the top of the address space is the size of the
address space. The size is the difference between the top address and
bottom address.
[jdike@addtoit.com: changed the name to reflect that this function is
supposed to return the top of the process address space, not its size and
changed the return value to reflect that. Also some minor formatting
changes] Signed-off-by: Tom Spink <tspink@gmail.com> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Fri, 6 Jun 2008 05:46:10 +0000 (22:46 -0700)]
uml: deal with host time going backwards
Protection against the host's time going backwards (eg, ntp activity on
the host) by keeping track of the time at the last tick and if it's
greater than the current time, keep time stopped until the host catches
up.
Cc: Nix <nix@esperi.org.uk> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Jackson [Fri, 6 Jun 2008 05:46:09 +0000 (22:46 -0700)]
doc: update to URL and status of kernel-docs.txt entry
Update status and URL for the "Gary's Encyclopedia" entry.
Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Williams [Fri, 6 Jun 2008 05:46:08 +0000 (22:46 -0700)]
fujitsu-laptop: autoload module on Lifebook P1510D
Signed-off-by: Dan Williams <dcbw@redhat.com> Cc: Jonathan Woithe <jwoithe@physics.adelaide.edu.au> Cc: Len Brown <len.brown@intel.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Mundt [Fri, 6 Jun 2008 05:46:08 +0000 (22:46 -0700)]
nommu: fix kobjsize() for SLOB and SLUB
kobjsize() has been abusing page->index as a method for sorting out
compound order, which blows up both for page cache pages, and SLOB's
reuse of the index in struct slob_page.
Presently we are not able to accurately size arbitrary pointers that
don't come from kmalloc(), so the best we can do is sort out the
compound order from the head page if it's a compound page, or default
to 0-order if it's impossible to ksize() the object.
Obviously this leaves quite a bit to be desired in terms of object
sizing accuracy, but the behaviour is unchanged over the existing
implementation, while fixing the page->index oopses originally reported
here:
Accuracy could also be improved by having SLUB and SLOB both set PG_slab
on ksizeable pages, rather than just handling the __GFP_COMP cases
irregardless of the PG_slab setting, as made possibly with Pekka's
patches:
This is primarily a bugfix for nommu systems for 2.6.26, with the aim
being to gradually kill off kobjsize() and its particular brand of
object abuse entirely.
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Paul Mundt <lethal@linux-sh.org> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The check in sys_brk() on minimum value the brk might have must take
CONFIG_COMPAT_BRK setting into account. When this option is turned on
(i.e. we support ancient legacy binaries, e.g. libc5-linked stuff), the
lower bound on brk value is mm->end_code, otherwise the brk start is
allowed to be arbitrarily shifted.
Roland.Kletzing [Fri, 6 Jun 2008 05:46:04 +0000 (22:46 -0700)]
drivers/char/ip2: fix Kconfig after ip2/ip2main merge
As commit 6089093e588ee3f6aed99d08b1cf5ea37c52cf97 ("ip2: fix crashes on
load/unload") fixed the ip2 crashes on load/unload by making ip2/ip2main
one module (ip2), Kconfig shouldn't mention a now non-existing module.
Signed-off-by: Roland.Kletzing <devzero@web.de> Acked-by: Alan Cox <alan@redhat.com> Cc: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michael Halcrow [Fri, 6 Jun 2008 05:46:02 +0000 (22:46 -0700)]
eCryptfs: remove unnecessary page decrypt call
The page decrypt calls in ecryptfs_write() are both pointless and buggy.
Pointless because ecryptfs_get_locked_page() has already brought the page
up to date, and buggy because prior mmap writes will just be blown away by
the decrypt call.
This patch also removes the declaration of a now-nonexistent function
ecryptfs_write_zeros().
Thanks to Eric Sandeen and David Kleikamp for helping to track this
down.
Eric said:
fsx w/ mmap dies quickly ( < 100 ops) without this, and survives
nicely (to millions of ops+) with it in place.
Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com> Cc: Eric Sandeen <sandeen@redhat.com> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Fri, 6 Jun 2008 05:46:01 +0000 (22:46 -0700)]
update checkpatch.pl to version 0.19
This version is a bit of a whopper. This version brings a few new checks,
improvements to a number of checks mostly through modifications to the
way types are parsed, several fixes to quote/comment handling, as well as
the usual slew of fixes for false positives.
Of note:
- return is not a function and is now reported,
- preprocessor directive detection is loosened to match C99 standard,
- we now intuit new type modifiers, and
- comment handling is much improved
Andy Whitcroft (18):
Version: 0.19
fix up a couple of missing newlines in reports
colon to parenthesis spacing varies on asm
values: #include is a preprocessor statement
quotes: fix single character quotes at line end
add typedef exception for the non-pointer "function types"
kerneldoc parameters must be on one line, relax line length
types: word boundary is not always required
improved #define bracketing reports
uninitialized_var is an annotation not a function name
possible types: add possible modifier handling
possible types: fastcall is a type modifier
types: unsigned is not a modifier on all types
static/external initialisation to zero should allow modifiers
checkpatch: fix recognition of preprocessor directives -- part 2
comments: fix inter-hunk comment tracking
return is not a function
do not report include/asm/foo.h use in include/linux/foo.h
return is not a function -- tighten test
[jengelh@computergmbh.de: fix recognition of preprocessor directives] Signed-off-by: Andy Whitcroft <apw@shadowen.org> Cc: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
^^ The board is using ucc_uart.c and 8250.c, both registered as
"serial".
This patch fixes two drivers that are using "serial" for driver_name and
not "ttyS" for dev_name. Drivers that are using "ttyS" for dev_name, will
conflict anyway, so we don't bother with these.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Alan Cox <alan@redhat.com> Acked-By: Timur Tabi <timur@freescale.com> Acked-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Nick Piggin [Fri, 6 Jun 2008 05:45:57 +0000 (22:45 -0700)]
hugetlb: fix lockdep error
=============================================
[ INFO: possible recursive locking detected ]
2.6.26-rc4 #30
---------------------------------------------
heap-overflow/2250 is trying to acquire lock:
(&mm->page_table_lock){--..}, at: [<c0000000000cf2e8>] .copy_hugetlb_page_range+0x108/0x280
but task is already holding lock:
(&mm->page_table_lock){--..}, at: [<c0000000000cf2dc>] .copy_hugetlb_page_range+0xfc/0x280
other info that might help us debug this:
3 locks held by heap-overflow/2250:
#0: (&mm->mmap_sem){----}, at: [<c000000000050e44>] .dup_mm+0x134/0x410
#1: (&mm->mmap_sem/1){--..}, at: [<c000000000050e54>] .dup_mm+0x144/0x410
#2: (&mm->page_table_lock){--..}, at: [<c0000000000cf2dc>] .copy_hugetlb_page_range+0xfc/0x280
Krzysztof Helt [Fri, 6 Jun 2008 05:45:56 +0000 (22:45 -0700)]
modedb: fix incorrect sync and vmode flags for CVT modes
The temporary structure for calculated CVT mode is not initialized. Few
fields have only bits or-ed or and-ed so they may be left in incorrect
(random) state.
Testing of the tridentfb seems like a good exercise for the fbdev layer.
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Adrian Bunk [Fri, 6 Jun 2008 05:45:55 +0000 (22:45 -0700)]
frv: don't offer BINFMT_FLAT
Fix the following compile error:
CC fs/binfmt_flat.o
In file included from
/home/bunk/linux/kernel-2.6/git/linux-2.6/fs/binfmt_flat.c:36:
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/flat.h:14:22: error: asm/flat.h: No such file or directory
/home/bunk/linux/kernel-2.6/git/linux-2.6/fs/binfmt_flat.c: In function 'create_flat_tables':
/home/bunk/linux/kernel-2.6/git/linux-2.6/fs/binfmt_flat.c:124: error: implicit declaration of function 'flat_stack_align'
/home/bunk/linux/kernel-2.6/git/linux-2.6/fs/binfmt_flat.c:125: error: implicit declaration of function 'flat_argvp_envp_on_stack'
/home/bunk/linux/kernel-2.6/git/linux-2.6/fs/binfmt_flat.c: In function 'calc_reloc':
/home/bunk/linux/kernel-2.6/git/linux-2.6/fs/binfmt_flat.c:347: error: implicit declaration of function 'flat_reloc_valid'
/home/bunk/linux/kernel-2.6/git/linux-2.6/fs/binfmt_flat.c: In function 'load_flat_file':
/home/bunk/linux/kernel-2.6/git/linux-2.6/fs/binfmt_flat.c:479: error: implicit declaration of function 'flat_old_ram_flag'
/home/bunk/linux/kernel-2.6/git/linux-2.6/fs/binfmt_flat.c:755: error: implicit declaration of function 'flat_set_persistent'
/home/bunk/linux/kernel-2.6/git/linux-2.6/fs/binfmt_flat.c:757: error: implicit declaration of function 'flat_get_relocate_addr'
/home/bunk/linux/kernel-2.6/git/linux-2.6/fs/binfmt_flat.c:765: error: implicit declaration of function 'flat_get_addr_from_rp'
/home/bunk/linux/kernel-2.6/git/linux-2.6/fs/binfmt_flat.c:781: error: implicit declaration of function 'flat_put_addr_at_rp'
Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Adrian Bunk <bunk@kernel.org> Tested-by: David Howells <dhowells@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Miao Xie [Fri, 6 Jun 2008 05:45:54 +0000 (22:45 -0700)]
cpusets: fix and update Documentation
Make the doc consistent with current cpusets implementation.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Acked-by: Paul Jackson <pj@sgi.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Williams [Fri, 6 Jun 2008 05:45:54 +0000 (22:45 -0700)]
md: do not compute parity unless it is on a failed drive
If a block is computed (rather than read) then a check/repair operation
may be lead to believe that the data on disk is correct, when infact it
isn't. So only compute blocks for failed devices.
This issue has been around since at least 2.6.12, but has become harder to
hit in recent kernels since most reads bypass the cache.
echo repair > /sys/block/mdN/md/sync_action will set the parity blocks to the
correct state.
Cc: <stable@kernel.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Williams [Fri, 6 Jun 2008 05:45:53 +0000 (22:45 -0700)]
md: fix uninitialized use of mddev->recovery_wait
If an array was created with --assume-clean we will oops when trying to
set ->resync_max.
Fix this by initializing ->recovery_wait in mddev_find.
Cc: <stable@kernel.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Williams [Fri, 6 Jun 2008 05:45:52 +0000 (22:45 -0700)]
md: fix prexor vs sync_request race
During the initial array synchronization process there is a window between
when a prexor operation is scheduled to a specific stripe and when it
completes for a sync_request to be scheduled to the same stripe. When
this happens the prexor completes and the stripe is unconditionally marked
"insync", effectively canceling the sync_request for the stripe. Prior to
2.6.23 this was not a problem because the prexor operation was done under
sh->lock. The effect in older kernels being that the prexor would still
erroneously mark the stripe "insync", but sync_request would be held off
and re-mark the stripe as "!in_sync".
Change the write completion logic to not mark the stripe "in_sync" if a
prexor was performed. The effect of the change is to sometimes not set
STRIPE_INSYNC. The worst this can do is cause the resync to stall waiting
for STRIPE_INSYNC to be set. If this were happening, then STRIPE_SYNCING
would be set and handle_issuing_new_read_requests would cause all
available blocks to eventually be read, at which point prexor would never
be used on that stripe any more and STRIPE_INSYNC would eventually be set.
echo repair > /sys/block/mdN/md/sync_action will correct arrays that may
have lost this race.
Cc: <stable@kernel.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Brownell [Fri, 6 Jun 2008 05:45:50 +0000 (22:45 -0700)]
spi: fix refcount-related spidev oops-on-rmmod
This addresses other oopsing paths in "spidev" by changing how it manages
refcounting. It decouples the lifecycle of the per-device data from the
class device (not just the spi device):
- Use class_{create,destroy} not class_{register,unregister}.
- Use device_{create,destroy} not device_{register,unregister}.
- Free the per-device data only when TWO conditions are true:
* Driver is unbound from underlying SPI device, and
* Device is no longer open (new)
Also, spi_{get,set}_drvdata not dev_{get,set}_drvdata for simpler code.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Sebastian Siewior <bigeasy@tglx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ralph Campbell [Fri, 6 Jun 2008 18:23:29 +0000 (11:23 -0700)]
IB/ipath: Fix SM trap forwarding
SM/SMA traps received by the ipath driver should be forwarded to the
SM if it is running on the host. The ib_ipath driver was incorrectly
replying with "bad method."
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Jaroslav Franek [Fri, 6 Jun 2008 09:04:19 +0000 (11:04 +0200)]
sound: emu10k1 - fix system hang with Audigy2 ZS Notebook PCMCIA card
When the Linux kernel is compiled with CONFIG_DEBUG_SHIRQ=y,
the Soundblaster Audigy2 ZS Notebook PCMCIA card causes the
system hang during boot (udev stage) or when the card is hot-plug.
The CONFIG_DEBUG_SHIRQ flag is by default 'y' with all Fedora
kernels since 2.6.23. The problem was reported as
https://bugzilla.redhat.com/show_bug.cgi?id=326411
The issue was hunted down to the snd_emu10k1_create() routine:
The early access to I/O port in the interrupt handler causes
the freeze. Obviously it is necessary to init the I/O ports
before accessing them. This patch moves the registration of
the irq handler after the initialization of the I/O ports.
Signed-off-by: Jaroslav Franek <jarin.franek@post.cz> Acked-by: James Courtier-Dutton <James@superbug.co.uk> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Ben Collins [Thu, 5 Jun 2008 23:10:21 +0000 (19:10 -0400)]
mmc: Fix crash in mmc_block on 64-bit
Fairly simple. "dev_use" was being allocated as a zero length array
because of bad math on 64-bit systems, causing a crash in
find_first_zero_bit(). One-liner follows:
Signed-off-by: Ben Collins <ben.collins@canonical.com> Acked-by: Pierre Ossman <drzeus@drzeus.cx> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Thu, 5 Jun 2008 21:29:53 +0000 (14:29 -0700)]
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
Fix divide by zero error in build_clear_page() and build_copy_page()
[MIPS] Fix typo in header guard
[MIPS] Fix build error - Delete debugging crap that crept in with CMP
[MIPS] Add accessors for random register.
[MIPS] IP27: misc fixes
[MIPS] IP27: Fix clockevent setup
[MIPS] IP27: Fix bootmem memory setup
[MIPS] remove CONFIG_CPU_R4000 line from Makefile
[MIPS] Fix check for valid stack pointer during backtrace
[MIPS] Add missing braces to pte_mkyoung
[MIPS] R4700: Fix build_tlb_probe_entry
[MIPS] Alchemy: dbdma: add API to delete custom DDMA device ids.
[MIPS] Alchemy: export get_au1x00_speed for modules
Andres Salomon [Thu, 5 Jun 2008 21:14:41 +0000 (14:14 -0700)]
PCI/x86: fix up PCI stuff so that PCI_GOANY supports OLPC
Previously, one would have to specifically choose CONFIG_OLPC and
CONFIG_PCI_GOOLPC in order to enable PCI_OLPC. That doesn't really work
for distro kernels, so this patch allows one to choose CONFIG_OLPC and
CONFIG_PCI_GOANY in order to build in OLPC support in a generic kernel (as
requested by Robert Millan).
This also moves GOOLPC before GOANY in the menuconfig list.
Finally, make pci_access_init return early if we detect OLPC hardware.
There's no need to continue probing stuff, and pci_pcbios_init
specifically trashes our settings (we didn't run into that before because
PCI_GOANY wasn't supported).
Signed-off-by: Andres Salomon <dilinger@debian.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
projects / linux-2.6-omap-h63xx.git / log