leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ARM: 7447/1: rwlocks: remove unused branch labels from trylock routines

Browse Source 
The ARM arch_{read,write}_trylock implementations include unused
backwards branch labels, since we don't retry the locking operation
if the exclusive store fails.

This patch removes the labels.

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Will Deacon 2012-07-06 15:44:13 +01:00 committed by Russell King
parent 546c2896a4
commit 881ccccb6b
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm/include/asm/spinlock.h
View File

@ -182,7 +182,7 @@ static inline int arch_write_trylock(arch_rwlock_t *rw)
unsigned long tmp;
__asm__ __volatile__(
"1: ldrex %0, [%1]\n"
" ldrex %0, [%1]\n"
" teq %0, #0\n"
" strexeq %0, %2, [%1]"
: "=&r" (tmp)
@ -268,7 +268,7 @@ static inline int arch_read_trylock(arch_rwlock_t *rw)
unsigned long tmp, tmp2 = 1;
__asm__ __volatile__(
"1: ldrex %0, [%2]\n"
" ldrex %0, [%2]\n"
" adds %0, %0, #1\n"
" strexpl %1, %0, [%2]\n"
: "=&r" (tmp), "+r" (tmp2)