linux-kernel - [PATCH] genirq: Fix missing parenthesises in generic-chip

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Date:	Thu,  2 Jun 2011 14:46:27 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	linux-kernel@...r.kernel.org,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH] genirq: Fix missing parenthesises in generic-chip

Unless I'm very much missing something these tests are intended to check
if bit zero is set, rather than checking if msk is entirely zero (in which
case the logic would be very confusing. I haven't actually observed any
runtime issues so this may be a misreading of the code on my part.

Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
---
 kernel/irq/generic-chip.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/irq/generic-chip.c b/kernel/irq/generic-chip.c
index 31a9db7..7872a5d 100644
--- a/kernel/irq/generic-chip.c
+++ b/kernel/irq/generic-chip.c
@@ -232,7 +232,7 @@ void irq_setup_generic_chip(struct irq_chip_generic *gc, u32 msk,
 		gc->mask_cache = irq_reg_readl(gc->reg_base + ct->regs.mask);
 
 	for (i = gc->irq_base; msk; msk >>= 1, i++) {
-		if (!msk & 0x01)
+		if (!(msk & 0x01))
 			continue;
 
 		if (flags & IRQ_GC_INIT_NESTED_LOCK)
@@ -287,7 +287,7 @@ void irq_remove_generic_chip(struct irq_chip_generic *gc, u32 msk,
 	raw_spin_unlock(&gc_lock);
 
 	for (; msk; msk >>= 1, i++) {
-		if (!msk & 0x01)
+		if (!(msk & 0x01))
 			continue;
 
 		/* Remove handler first. That will mask the irq line */
-- 
1.7.5.3

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