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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-01-16 21:02:17 +0300
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-02-03 00:23:25 +0300
commit6323f0ccedf756dfe5f46549cec69a2d6d97937b (patch)
tree091e3408c12bbce33ef5d708b6131132b9660d4d /arch/arm/lib/changebit.S
parenta16ede35a2659170c855c5d267776666c0630f1f (diff)
downloadlinux-6323f0ccedf756dfe5f46549cec69a2d6d97937b.tar.xz
ARM: bitops: switch set/clear/change bitops to use ldrex/strex
Switch the set/clear/change bitops to use the word-based exclusive operations, which are only present in a wider range of ARM architectures than the byte-based exclusive operations. Tested record: - Nicolas Pitre: ext3,rw,le - Sourav Poddar: nfs,le - Will Deacon: ext3,rw,le - Tony Lindgren: ext3+nfs,le Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org> Tested-by: Sourav Poddar <sourav.poddar@ti.com> Tested-by: Will Deacon <will.deacon@arm.com> Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/lib/changebit.S')
-rw-r--r--arch/arm/lib/changebit.S10
1 files changed, 2 insertions, 8 deletions
diff --git a/arch/arm/lib/changebit.S b/arch/arm/lib/changebit.S
index 80f3115cbee2..68ed5b62e839 100644
--- a/arch/arm/lib/changebit.S
+++ b/arch/arm/lib/changebit.S
@@ -12,12 +12,6 @@
#include "bitops.h"
.text
-/* Purpose : Function to change a bit
- * Prototype: int change_bit(int bit, void *addr)
- */
-ENTRY(_change_bit_be)
- eor r0, r0, #0x18 @ big endian byte ordering
-ENTRY(_change_bit_le)
+ENTRY(_change_bit)
bitop eor
-ENDPROC(_change_bit_be)
-ENDPROC(_change_bit_le)
+ENDPROC(_change_bit)