[POWERPC] PS3: Use clear_bit

Replace the inline asm with bitops in the PS3 interrupt
chip mask routines.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/platforms/ps3/interrupt.c b/arch/powerpc/platforms/ps3/interrupt.c
index e2de899..67e32ec 100644 (file)
--- a/arch/powerpc/platforms/ps3/interrupt.c
+++ b/arch/powerpc/platforms/ps3/interrupt.c
@@ -100,24 +100,13 @@ static DEFINE_PER_CPU(struct ps3_private, ps3_private);
 static void ps3_chip_mask(unsigned int virq)
 {
        struct ps3_private *pd = get_irq_chip_data(virq);
-       u64 bit = 0x8000000000000000UL >> virq;
-       u64 *p = &pd->bmp.mask;
-       u64 old;
        unsigned long flags;
 
        pr_debug("%s:%d: thread_id %lu, virq %d\n", __func__, __LINE__,
                pd->thread_id, virq);
 
        local_irq_save(flags);
-       asm volatile(
-                    "1:        ldarx %0,0,%3\n"
-                    "andc      %0,%0,%2\n"
-                    "stdcx.    %0,0,%3\n"
-                    "bne-      1b"
-                    : "=&r" (old), "+m" (*p)
-                    : "r" (bit), "r" (p)
-                    : "cc" );
-
+       clear_bit(63 - virq, &pd->bmp.mask);
        lv1_did_update_interrupt_mask(pd->ppe_id, pd->thread_id);
        local_irq_restore(flags);
 }
@@ -132,24 +121,13 @@ static void ps3_chip_mask(unsigned int virq)
 static void ps3_chip_unmask(unsigned int virq)
 {
        struct ps3_private *pd = get_irq_chip_data(virq);
-       u64 bit = 0x8000000000000000UL >> virq;
-       u64 *p = &pd->bmp.mask;
-       u64 old;
        unsigned long flags;
 
        pr_debug("%s:%d: thread_id %lu, virq %d\n", __func__, __LINE__,
                pd->thread_id, virq);
 
        local_irq_save(flags);
-       asm volatile(
-                    "1:        ldarx %0,0,%3\n"
-                    "or        %0,%0,%2\n"
-                    "stdcx.    %0,0,%3\n"
-                    "bne-      1b"
-                    : "=&r" (old), "+m" (*p)
-                    : "r" (bit), "r" (p)
-                    : "cc" );
-
+       set_bit(63 - virq, &pd->bmp.mask);
        lv1_did_update_interrupt_mask(pd->ppe_id, pd->thread_id);
        local_irq_restore(flags);
 }