From: Roel Kluin Date: Sat, 20 Jun 2009 01:08:30 +0000 (-0600) Subject: OMAP2 clock/powerdomain: off by 1 error in loop timeout comparisons X-Git-Tag: firefly_0821_release~13644^2~4^2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2687069f3ac297b820c58de7222e4d16adbca498;p=firefly-linux-kernel-4.4.55.git OMAP2 clock/powerdomain: off by 1 error in loop timeout comparisons with while (i++ < MAX_CLOCK_ENABLE_WAIT); i can reach MAX_CLOCK_ENABLE_WAIT + 1 after the loop, so if (i == MAX_CLOCK_ENABLE_WAIT) that's still success. Signed-off-by: Roel Kluin Signed-off-by: Paul Walmsley --- diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c index ba528f85749c..b0665f161c03 100644 --- a/arch/arm/mach-omap2/clock.c +++ b/arch/arm/mach-omap2/clock.c @@ -302,7 +302,7 @@ int omap2_wait_clock_ready(void __iomem *reg, u32 mask, const char *name) udelay(1); } - if (i < MAX_CLOCK_ENABLE_WAIT) + if (i <= MAX_CLOCK_ENABLE_WAIT) pr_debug("Clock %s stable after %d loops\n", name, i); else printk(KERN_ERR "Clock %s didn't enable in %d tries\n", diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c index 73e2971b1757..983f1cb676be 100644 --- a/arch/arm/mach-omap2/powerdomain.c +++ b/arch/arm/mach-omap2/powerdomain.c @@ -1099,7 +1099,7 @@ int pwrdm_wait_transition(struct powerdomain *pwrdm) (c++ < PWRDM_TRANSITION_BAILOUT)) udelay(1); - if (c >= PWRDM_TRANSITION_BAILOUT) { + if (c > PWRDM_TRANSITION_BAILOUT) { printk(KERN_ERR "powerdomain: waited too long for " "powerdomain %s to complete transition\n", pwrdm->name); return -EAGAIN;