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Diffstat (limited to 'arch/powerpc/sysdev/ipic.c')
-rw-r--r--arch/powerpc/sysdev/ipic.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c
index 9a89cd3e80a2..a86d3ce01ead 100644
--- a/arch/powerpc/sysdev/ipic.c
+++ b/arch/powerpc/sysdev/ipic.c
@@ -568,8 +568,7 @@ static void ipic_ack_irq(unsigned int virq)
spin_lock_irqsave(&ipic_lock, flags);
- temp = ipic_read(ipic->regs, ipic_info[src].ack);
- temp |= (1 << (31 - ipic_info[src].bit));
+ temp = 1 << (31 - ipic_info[src].bit);
ipic_write(ipic->regs, ipic_info[src].ack, temp);
/* mb() can't guarantee that ack is finished. But it does finish
@@ -592,8 +591,7 @@ static void ipic_mask_irq_and_ack(unsigned int virq)
temp &= ~(1 << (31 - ipic_info[src].bit));
ipic_write(ipic->regs, ipic_info[src].mask, temp);
- temp = ipic_read(ipic->regs, ipic_info[src].ack);
- temp |= (1 << (31 - ipic_info[src].bit));
+ temp = 1 << (31 - ipic_info[src].bit);
ipic_write(ipic->regs, ipic_info[src].ack, temp);
/* mb() can't guarantee that ack is finished. But it does finish