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MIPS: Remove unneeded volatile from arch/mips/lib/bitops.c 

The operations on the bitmap pointers are protected by "memory"
clobbering raw_local_irq_{save,restore}(), so there is no need for
volatile here.  By removing the volatile we get better code generation
out of the compiler.

Signed-off-by: David Daney <david.daney@cavium.com>
Patchwork: http://patchwork.linux-mips.org/patch/4966/
Acked-by: John Crispin <blogic@openwrt.org>
This commit is contained in:
David Daney 2013-02-26 22:22:33 +00:00 committed by Ralf Baechle
parent 224786779d
commit 3018965139
1 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
arch/mips/lib/bitops.c
View File

@ -19,7 +19,7 @@
*/ */
void __mips_set_bit(unsigned long nr, volatile unsigned long *addr) void __mips_set_bit(unsigned long nr, volatile unsigned long *addr)
{ {
volatile unsigned long *a = addr; unsigned long *a = (unsigned long *)addr;
unsigned bit = nr & SZLONG_MASK; unsigned bit = nr & SZLONG_MASK;
unsigned long mask; unsigned long mask;
unsigned long flags; unsigned long flags;
@ -41,7 +41,7 @@ EXPORT_SYMBOL(__mips_set_bit);
*/ */
void __mips_clear_bit(unsigned long nr, volatile unsigned long *addr) void __mips_clear_bit(unsigned long nr, volatile unsigned long *addr)
{ {
volatile unsigned long *a = addr; unsigned long *a = (unsigned long *)addr;
unsigned bit = nr & SZLONG_MASK; unsigned bit = nr & SZLONG_MASK;
unsigned long mask; unsigned long mask;
unsigned long flags; unsigned long flags;
@ -63,7 +63,7 @@ EXPORT_SYMBOL(__mips_clear_bit);
*/ */
void __mips_change_bit(unsigned long nr, volatile unsigned long *addr) void __mips_change_bit(unsigned long nr, volatile unsigned long *addr)
{ {
volatile unsigned long *a = addr; unsigned long *a = (unsigned long *)addr;
unsigned bit = nr & SZLONG_MASK; unsigned bit = nr & SZLONG_MASK;
unsigned long mask; unsigned long mask;
unsigned long flags; unsigned long flags;
@ -86,7 +86,7 @@ EXPORT_SYMBOL(__mips_change_bit);
int __mips_test_and_set_bit(unsigned long nr, int __mips_test_and_set_bit(unsigned long nr,
volatile unsigned long *addr) volatile unsigned long *addr)
{ {
volatile unsigned long *a = addr; unsigned long *a = (unsigned long *)addr;
unsigned bit = nr & SZLONG_MASK; unsigned bit = nr & SZLONG_MASK;
unsigned long mask; unsigned long mask;
unsigned long flags; unsigned long flags;
@ -112,7 +112,7 @@ EXPORT_SYMBOL(__mips_test_and_set_bit);
int __mips_test_and_set_bit_lock(unsigned long nr, int __mips_test_and_set_bit_lock(unsigned long nr,
volatile unsigned long *addr) volatile unsigned long *addr)
{ {
volatile unsigned long *a = addr; unsigned long *a = (unsigned long *)addr;
unsigned bit = nr & SZLONG_MASK; unsigned bit = nr & SZLONG_MASK;
unsigned long mask; unsigned long mask;
unsigned long flags; unsigned long flags;
@ -137,7 +137,7 @@ EXPORT_SYMBOL(__mips_test_and_set_bit_lock);
*/ */
int __mips_test_and_clear_bit(unsigned long nr, volatile unsigned long *addr) int __mips_test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
{ {
volatile unsigned long *a = addr; unsigned long *a = (unsigned long *)addr;
unsigned bit = nr & SZLONG_MASK; unsigned bit = nr & SZLONG_MASK;
unsigned long mask; unsigned long mask;
unsigned long flags; unsigned long flags;
@ -162,7 +162,7 @@ EXPORT_SYMBOL(__mips_test_and_clear_bit);
*/ */
int __mips_test_and_change_bit(unsigned long nr, volatile unsigned long *addr) int __mips_test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
{ {
volatile unsigned long *a = addr; unsigned long *a = (unsigned long *)addr;
unsigned bit = nr & SZLONG_MASK; unsigned bit = nr & SZLONG_MASK;
unsigned long mask; unsigned long mask;
unsigned long flags; unsigned long flags;