From b7dcc4eacc45263ac5d3a0bd78c64e9ff7c94c13 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 21 Jun 2017 23:49:54 +0200 Subject: [PATCH] clocksource/drivers: Fix uninitialized variable use in timer_of_init If none of the flags are set, 'ret' is uninitialized as pointed out by gcc: drivers/clocksource/timer-of.c: In function 'timer_of_init': drivers/clocksource/timer-of.c:160:9: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized] Since calling the function without any of the flags is an error, set the return value to -EINVAL for that case. [ tglx: Get rid of the silly backwards goto while at it ] Fixes: dc11bae78529 ("clocksource/drivers: Add timer-of common init routine") Signed-off-by: Arnd Bergmann Signed-off-by: Thomas Gleixner Cc: Daniel Lezcano Link: http://lkml.kernel.org/r/20170621215005.3870011-1-arnd@arndb.de --- drivers/clocksource/timer-of.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/clocksource/timer-of.c b/drivers/clocksource/timer-of.c index be1dbee11c20..64b1c2081a67 100644 --- a/drivers/clocksource/timer-of.c +++ b/drivers/clocksource/timer-of.c @@ -130,7 +130,7 @@ static __init int timer_base_init(struct device_node *np, int __init timer_of_init(struct device_node *np, struct timer_of *to) { - int ret; + int ret = -EINVAL; int flags = 0; if (to->flags & TIMER_OF_BASE) { @@ -156,7 +156,6 @@ int __init timer_of_init(struct device_node *np, struct timer_of *to) if (!to->clkevt.name) to->clkevt.name = np->name; -out: return ret; out_fail: @@ -168,5 +167,5 @@ out_fail: if (flags & TIMER_OF_BASE) timer_base_exit(&to->of_base); - goto out; + return ret; } -- 2.20.1