]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
libata: improve ata_down_xfermask_limit()
authorTejun Heo <htejun@gmail.com>
Fri, 2 Feb 2007 07:22:30 +0000 (16:22 +0900)
committerJeff Garzik <jeff@garzik.org>
Wed, 21 Feb 2007 09:58:16 +0000 (04:58 -0500)
commit458337dbb120d33f326e2b19d54eca8cf179b5c0
tree91bc5284430b5a8856ec1b2fd4c277c4eb3f8827
parenta619f981b477035027dd27dfbee6148b4cd4a83c
libata: improve ata_down_xfermask_limit()

Make ata_down_xfermask_limit() accept @sel instead of @force_pio0.
@sel selects how the xfermask limit will be adjusted.  The following
selectors are defined.

* ATA_DNXFER_PIO : only speed down PIO
* ATA_DNXFER_DMA : only speed down DMA, don't cause transfer mode change
* ATA_DNXFER_40C : apply 40c cable limit
* ATA_DNXFER_FORCE_PIO : force PIO
* ATA_DNXFER_FORCE_PIO0 : force PIO0 (same as original with @force_pio0 == 1)
* ATA_DNXFER_ANY : same as original with @force_pio0 == 0

Currently, only ANY and FORCE_PIO0 are used to maintain the original
behavior.  Other selectors will be used later to improve EH speed down
sequence.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
drivers/ata/libata-core.c
drivers/ata/libata-eh.c
drivers/ata/libata.h