[Intel-gfx] [PATCH] backlight: Do not hang forever if helper pid is -1
Olivier Fourdan
ofourdan at redhat.com
Wed Apr 29 02:19:47 PDT 2015
Backlight helper PID is set to -1 by default, if for some reason it's
not set, we may end up with waitpid(-1, ...) which will hang forever.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90230
Signed-off-by: Olivier Fourdan <ofourdan at redhat.com>
---
src/backlight.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/backlight.c b/src/backlight.c
index 84d8f76..c65e466 100644
--- a/src/backlight.c
+++ b/src/backlight.c
@@ -523,7 +523,7 @@ void backlight_disable(struct backlight *b)
void backlight_close(struct backlight *b)
{
backlight_disable(b);
- if (b->pid)
+ if (b->pid > 0)
waitpid(b->pid, NULL, 0);
}
--
2.3.6
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