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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2014-04-23 21:52:04 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2014-05-07 11:50:27 +0530 |
| commit | c906a3ec458742c95850c0c1cde9e8b68df25c01 (patch) | |
| tree | 94a116287bf87c8dbd1bbfd94f91862ff5c70c1c /drivers/dma/ste_dma40.c | |
| parent | 123e4ca172707267eef5fbe9f0c58bd4c412685c (diff) | |
| download | talos-obmc-linux-c906a3ec458742c95850c0c1cde9e8b68df25c01.tar.gz talos-obmc-linux-c906a3ec458742c95850c0c1cde9e8b68df25c01.zip | |
dma: ste_dma40: Fixup system suspend/resume
Make sure to handle register context save/restore when needed from
system PM callbacks.
Previously we solely trusted the device to reside in in-active state
while the system suspend callback were invoked, which is just too
optimistic.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/ste_dma40.c')
| -rw-r--r-- | drivers/dma/ste_dma40.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 0b29af321873..b539fc9b469a 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -2945,7 +2945,11 @@ static int dma40_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct d40_base *base = platform_get_drvdata(pdev); - int ret = 0; + int ret; + + ret = pm_runtime_force_suspend(dev); + if (ret) + return ret; if (base->lcpa_regulator) ret = regulator_disable(base->lcpa_regulator); @@ -2958,10 +2962,13 @@ static int dma40_resume(struct device *dev) struct d40_base *base = platform_get_drvdata(pdev); int ret = 0; - if (base->lcpa_regulator) + if (base->lcpa_regulator) { ret = regulator_enable(base->lcpa_regulator); + if (ret) + return ret; + } - return ret; + return pm_runtime_force_resume(dev); } #endif |
