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authorWill Schmidt <will_schmidt@vnet.ibm.com>2007-06-29 15:49:50 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-06-29 21:27:00 -0700
commitfde937d826e43c9fe7fecc98b6f3da7188e76930 (patch)
tree6e52722aba4e7fd4a7effecc8a1578d37930cae0
parent0471448f4d017470995d8a2272dc8c06dbed3b77 (diff)
Fix VDSO gettimeofday() when called with NULL struct timeval.
The vdso64 portion of patch 74609f4536f2b8fd6a48381bbbe3cd37da20a527 for fixing problems with NULL gettimeofday input mistakenly checks for a null tz field twice, when it should be checking for null tz once, and null tv once; by way of a r10/r11 typo. Any application calling gettimeofday(&tv,NULL) will "fail". This corrects that typo, and makes my G5 happy. Tested on G5. Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com> Cc: Tony Breeds <tony@bakeyournoodle.com> Forwarded-by: Ben Herrenschmidt <benh@kernel.crashing.org> [ Ben says: "I checked the 32 bits part of the change is correct. You can probably blame me for originally writing the 2 versions with inversed usage of r10 and r11, thus confusing Tony :-)" Ben duly blamed. - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/powerpc/kernel/vdso64/gettimeofday.S2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/vdso64/gettimeofday.S b/arch/powerpc/kernel/vdso64/gettimeofday.S
index 2d7a5104c66..c6401f9e37f 100644
--- a/arch/powerpc/kernel/vdso64/gettimeofday.S
+++ b/arch/powerpc/kernel/vdso64/gettimeofday.S
@@ -31,7 +31,7 @@ V_FUNCTION_BEGIN(__kernel_gettimeofday)
mr r11,r3 /* r11 holds tv */
mr r10,r4 /* r10 holds tz */
bl V_LOCAL_FUNC(__get_datapage) /* get data page */
- cmpldi r10,0 /* check if tv is NULL */
+ cmpldi r11,0 /* check if tv is NULL */
beq 2f
bl V_LOCAL_FUNC(__do_get_xsec) /* get xsec from tb & kernel */
lis r7,15 /* r7 = 1000000 = USEC_PER_SEC */