From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Wed, 22 Jun 2005 00:16:31 +0000 (-0700)
Subject: [PATCH] s390: pending interrupt after ipl from reader
X-Git-Tag: v2.6.13-rc4~130^2~202^2~64
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=2b071886170df456e230c38a3e504da4a11fff79;p=linux-2.6-omap-h63xx.git

[PATCH] s390: pending interrupt after ipl from reader

Wait for interrupt and clear status pending after resetting the reader.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index 658e8de74f8..fc8bf5e285f 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -345,10 +345,25 @@ iplstart:
 	bno   .Lnoreset
         la    %r2,.Lreset              
         lhi   %r3,26
-        .long 0x83230008
+	diag  %r2,%r3,8
+	mvc   0x78(8),.Lrdrnewpsw              # set up IO interrupt psw
+.Lwaitrdrirq:
+	lpsw  .Lrdrwaitpsw
+.Lrdrint:
+	c     %r1,0xb8                         # compare subchannel number
+	bne   .Lwaitrdrirq
+	la    %r5,.Lirb
+	tsch  0(%r5)
 .Lnoreset:
+        b     .Lnoload
+
+	.align 8
+.Lrdrnewpsw:
+	.long  0x00080000,0x80000000+.Lrdrint
+.Lrdrwaitpsw:
+	.long  0x020a0000,0x80000000+.Lrdrint
 #endif
-	
+
 #
 # everything loaded, go for it
 #
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index 8e2caf9dc18..f525c0c2125 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -344,10 +344,25 @@ iplstart:
 	bno   .Lnoreset
         la    %r2,.Lreset              
         lhi   %r3,26
-        .long 0x83230008
+	diag  %r2,%r3,8
+	mvc   0x78(8),.Lrdrnewpsw	       # set up IO interrupt psw
+.Lwaitrdrirq:
+	lpsw  .Lrdrwaitpsw
+.Lrdrint:
+	c     %r1,0xb8			       # compare subchannel number
+	bne   .Lwaitrdrirq
+	la    %r5,.Lirb
+	tsch  0(%r5)
 .Lnoreset:
+	b     .Lnoload
+
+	.align 8
+.Lrdrnewpsw:
+	.long  0x00080000,0x80000000+.Lrdrint
+.Lrdrwaitpsw:
+	.long  0x020a0000,0x80000000+.Lrdrint
 #endif
-	
+
 #
 # everything loaded, go for it
 #