* [PATCH] PM / domains: Fix 'may be used uninitialized' build warning
@ 2016-12-30 11:34 Augusto Mecking Caringi
2017-01-06 1:28 ` Rafael J. Wysocki
0 siblings, 1 reply; 2+ messages in thread
From: Augusto Mecking Caringi @ 2016-12-30 11:34 UTC (permalink / raw)
To: Rafael J . Wysocki
Cc: torvalds, Augusto Mecking Caringi, Kevin Hilman, Ulf Hansson,
Len Brown, Pavel Machek, Greg Kroah-Hartman, linux-pm,
linux-kernel
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>
---
drivers/base/power/domain.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index a5e1262..2997026 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();
--
2.7.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] PM / domains: Fix 'may be used uninitialized' build warning
2016-12-30 11:34 [PATCH] PM / domains: Fix 'may be used uninitialized' build warning Augusto Mecking Caringi
@ 2017-01-06 1:28 ` Rafael J. Wysocki
0 siblings, 0 replies; 2+ messages in thread
From: Rafael J. Wysocki @ 2017-01-06 1:28 UTC (permalink / raw)
To: Augusto Mecking Caringi
Cc: torvalds, Kevin Hilman, Ulf Hansson, Len Brown, Pavel Machek,
Greg Kroah-Hartman, linux-pm, linux-kernel
On Friday, December 30, 2016 11:34:08 AM Augusto Mecking Caringi wrote:
> 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>
> ---
> drivers/base/power/domain.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
> index a5e1262..2997026 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();
Applied.
Thanks,
Rafael
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2017-01-06 1:28 ` Rafael J. Wysocki
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