Skip to main content

Browse the archive

https://github.com/torvalds/linux
27 March 2024, 02:37:15 UTC
Revision d33d5a6c88fcd53fec329a1521010f1bc55fa191 authored by Linus Torvalds on 25 December 2016, 22:56:58 UTC, committed by Linus Torvalds on 25 December 2016, 22:56:58 UTC 
avoid spurious "may be used uninitialized" warning
 
The timer type simplifications caused a new gcc warning:

  drivers/base/power/domain.c: In function ‘genpd_runtime_suspend’:
  drivers/base/power/domain.c:562:14: warning: ‘time_start’ may be used uninitialized in this function [-Wmaybe-uninitialized]
     elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start));

despite the actual use of "time_start" not having changed in any way.
It appears that simply changing the type of ktime_t from a union to a
plain scalar type made gcc check the use.

The variable wasn't actually used uninitialized, but gcc apparently
failed to notice that the conditional around the use was exactly the
same as the conditional around the initialization of that variable.

Add an unnecessary initialization just to shut up the compiler.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 3ddc76d
History
Tip revision: d33d5a6c88fcd53fec329a1521010f1bc55fa191 authored by Linus Torvalds on 25 December 2016, 22:56:58 UTC
avoid spurious "may be used uninitialized" warning
Tip revision: d33d5a6
File Mode Size
Documentation
arch
block
certs
crypto
drivers
firmware
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 31 bytes
.gitattributes -rw-r--r-- 30 bytes
.gitignore -rw-r--r-- 1.3 KB
.mailmap -rw-r--r-- 7.5 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 96.0 KB
Kbuild -rw-r--r-- 2.8 KB
Kconfig -rw-r--r-- 252 bytes
MAINTAINERS -rw-r--r-- 381.7 KB
Makefile -rw-r--r-- 57.6 KB
README -rw-r--r-- 722 bytes

README

back to top