leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

i2c: exynos5: Properly use the "noirq" variants of suspend/resume

Browse Source 
The original code for the exynos i2c controller registered for the
"noirq" variants.  However during review feedback it was moved to
SIMPLE_DEV_PM_OPS without anyone noticing that it meant we were no
longer actually "noirq" (despite functions named
exynos5_i2c_suspend_noirq and exynos5_i2c_resume_noirq).

i2c controllers that might have wakeup sources on them seem to need to
resume at noirq time so that the individual drivers can actually read
the i2c bus to handle their wakeup.

NOTE: I took the original review feedback from Wolfram and added
poweroff, thaw, freeze, restore.

This patch has only been compile-tested since I don't have all the
patches needed to make my machine using this i2c driver actually
suspend/resume.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Doug Anderson 2014-06-25 09:39:20 -07:00 committed by Wolfram Sang
parent 4db5beed9c
commit 57186fe3db
1 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/i2c/busses/i2c-exynos5.c
View File

@ -789,8 +789,16 @@ static int exynos5_i2c_resume_noirq(struct device *dev)
}
#endif
static SIMPLE_DEV_PM_OPS(exynos5_i2c_dev_pm_ops, exynos5_i2c_suspend_noirq,
exynos5_i2c_resume_noirq);
static const struct dev_pm_ops exynos5_i2c_dev_pm_ops = {
#ifdef CONFIG_PM_SLEEP
.suspend_noirq = exynos5_i2c_suspend_noirq,
.resume_noirq = exynos5_i2c_resume_noirq,
.freeze_noirq = exynos5_i2c_suspend_noirq,
.thaw_noirq = exynos5_i2c_resume_noirq,
.poweroff_noirq = exynos5_i2c_suspend_noirq,
.restore_noirq = exynos5_i2c_resume_noirq,
#endif
};
static struct platform_driver exynos5_i2c_driver = {
.probe = exynos5_i2c_probe,