* [PATCH 4/4] s390: Add missing memory constraint to stcrw().
@ 2006-01-23 12:03 Heiko Carstens
0 siblings, 0 replies; only message in thread
From: Heiko Carstens @ 2006-01-23 12:03 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-kernel, Peter Oberparleiter
From: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Add missing memory constraint to stcrw() inline assembly.
Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
---
drivers/s390/s390mach.h | 17 +++++++++--------
1 files changed, 9 insertions(+), 8 deletions(-)
diff -urpN linux-2.6/drivers/s390/s390mach.h linux-2.6-patched/drivers/s390/s390mach.h
--- linux-2.6/drivers/s390/s390mach.h 2006-01-03 04:21:10.000000000 +0100
+++ linux-2.6-patched/drivers/s390/s390mach.h 2006-01-23 10:05:33.000000000 +0100
@@ -90,15 +90,16 @@ struct crw {
static inline int stcrw(struct crw *pcrw )
{
- int ccode;
+ int ccode;
- __asm__ __volatile__(
- "STCRW 0(%1)\n\t"
- "IPM %0\n\t"
- "SRL %0,28\n\t"
- : "=d" (ccode) : "a" (pcrw)
- : "cc", "1" );
- return ccode;
+ __asm__ __volatile__(
+ "stcrw 0(%2)\n\t"
+ "ipm %0\n\t"
+ "srl %0,28\n\t"
+ : "=d" (ccode), "=m" (*pcrw)
+ : "a" (pcrw)
+ : "cc" );
+ return ccode;
}
#endif /* __s390mach */
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