diff options
| author | Junjie Wu <junjiew@codeaurora.org> | 2015-07-08 10:19:34 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 20:04:21 -0700 |
| commit | e38e726df9e1fa7601f0dd1fe67c0c4a84756ff3 (patch) | |
| tree | d8dbd0495b0c4558fd2e1fc4f453d22a88713f20 /drivers/devfreq/devfreq_simple_dev.c | |
| parent | a61d19ec530236868ffab97103d0a8df5949e7b4 (diff) | |
PM / devfreq: governor_cache_hwmon: Fix race in monitor start/stop
Some cache_hwmon devices can have interrupts firing at any time. The
interrupt handler would stop devfreq monitor, update its vote and
restart the monitor again. This introduces a race if
devfreq_supend/resume() or devfreq_interval_update() is called at
the same time. Since devfreq_monitor_start() re-initializes the work,
it could cause corruption while the work is being used elsewhere.
Protect governor monitor start/stops with a new lock.
Change-Id: I143aaaea86494b4c617df46e2c521a19b43861d5
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
Diffstat (limited to 'drivers/devfreq/devfreq_simple_dev.c')
0 files changed, 0 insertions, 0 deletions