Enable a suitable ISA for the assembler around ll/sc so that code
builds even for processors that don't support the instructions.
Plus minor formatting fixes.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/semaphore.c b/arch/mips/kernel/semaphore.c
index 9c40fe5..dbb145e 100644
--- a/arch/mips/kernel/semaphore.c
+++ b/arch/mips/kernel/semaphore.c
@@ -42,24 +42,28 @@
if (cpu_has_llsc && R10000_LLSC_WAR) {
__asm__ __volatile__(
- "1: ll %0, %2 \n"
+ " .set mips2 \n"
+ "1: ll %0, %2 # __sem_update_count \n"
" sra %1, %0, 31 \n"
" not %1 \n"
" and %1, %0, %1 \n"
- " add %1, %1, %3 \n"
+ " addu %1, %1, %3 \n"
" sc %1, %2 \n"
" beqzl %1, 1b \n"
+ " .set mips0 \n"
: "=&r" (old_count), "=&r" (tmp), "=m" (sem->count)
: "r" (incr), "m" (sem->count));
} else if (cpu_has_llsc) {
__asm__ __volatile__(
- "1: ll %0, %2 \n"
+ " .set mips2 \n"
+ "1: ll %0, %2 # __sem_update_count \n"
" sra %1, %0, 31 \n"
" not %1 \n"
" and %1, %0, %1 \n"
- " add %1, %1, %3 \n"
+ " addu %1, %1, %3 \n"
" sc %1, %2 \n"
" beqz %1, 1b \n"
+ " .set mips0 \n"
: "=&r" (old_count), "=&r" (tmp), "=m" (sem->count)
: "r" (incr), "m" (sem->count));
} else {