From: Augusto Mecking Caringi <augustocaringi@gmail.com>
Date: Fri, 30 Dec 2016 11:34:08 +0000 (+0000)
Subject: PM / domains: Fix 'may be used uninitialized' build warning
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=ab51e6ba0059f92036a08e41ba5cc70e77ce02df;p=openwrt%2Fstaging%2Fblogic.git

PM / domains: Fix 'may be used uninitialized' build warning

This patch fixes the following gcc warning:

drivers/base/power/domain.c: In function ‘genpd_runtime_resume’:
drivers/base/power/domain.c:642:14: warning: ‘time_start’ may be used
uninitialized in this function [-Wmaybe-uninitialized]
   elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start)

The same problem (in another function in this same file) was fixed in
commit d33d5a6c88fc (avoid spurious "may be used uninitialized" warning)

Signed-off-by: Augusto Mecking Caringi <augustocaringi@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index a5e1262b964b..2997026b4dfb 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -626,6 +626,7 @@ static int genpd_runtime_resume(struct device *dev)
 
  out:
 	/* Measure resume latency. */
+	time_start = 0;
 	if (timed && runtime_pm)
 		time_start = ktime_get();