shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-08 03:40:35 +09:00
Code Issues Packages Projects Releases Wiki Activity

ARM: OMAP2+: Fix potentially uninitialized return value for _setup_reset()

Browse Source 
[ Upstream commit 7f0d078667 ]

Commit 747834ab83 ("ARM: OMAP2+: hwmod: revise hardreset behavior") made
the call to _enable() conditional based on no oh->rst_lines_cnt. This
caused the return value to be potentially uninitialized. Curiously we see
no compiler warnings for this, probably as this gets inlined.

We call _setup_reset() from _setup() and only _setup_postsetup() if the
return value is zero. Currently the return value can be uninitialized for
cases where oh->rst_lines_cnt is set and HWMOD_INIT_NO_RESET is not set.

Fixes: 747834ab83 ("ARM: OMAP2+: hwmod: revise hardreset behavior")
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tony Lindgren
2019-03-21 11:00:21 -07:00
committed by Greg Kroah-Hartman
parent 5aeaa36b68
commit eb8f7fa734
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-omap2/omap_hwmod.c
View File

@@ -2430,7 +2430,7 @@ static void _setup_iclk_autoidle(struct omap_hwmod *oh)
*/
static int _setup_reset(struct omap_hwmod *oh)
{
int r;
int r = 0;
if (oh->_state != _HWMOD_STATE_INITIALIZED)
return -EINVAL;