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dmaengine: shdmac: extend PM methods

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In order to make it possible to restore from hibernation not only in Linux but
also in e.g. U-Boot, we have to use sh_dmae_{suspend|resume}() for the {freeze|
thaw|restore}() PM methods. It's handy to achieve this with SIMPLE_DEV_PM_OPS()
macro; since  that macro doesn't do anything when CONFIG_PM_SLEEP  is undefined,
we don't need to #define sh_dmae_{suspend|resume} NULL anymore but we'll have to
enclose sh_dmae_{suspend|resume}() into the new #ifdef...

Based on original patch by Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Sergei Shtylyov 2015-01-21 00:13:21 +03:00 committed by Vinod Koul
parent 82bf90c628
commit bf44a4175e
1 changed files with 3 additions and 5 deletions
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8
drivers/dma/sh/shdmac.c
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@ -600,7 +600,9 @@ static int sh_dmae_runtime_resume(struct device *dev)
return sh_dmae_rst(shdev);
}
#endif
#ifdef CONFIG_PM_SLEEP
static int sh_dmae_suspend(struct device *dev)
{
return 0;
@ -632,14 +634,10 @@ static int sh_dmae_resume(struct device *dev)
return 0;
}
#else
#define sh_dmae_suspend NULL
#define sh_dmae_resume NULL
#endif
static const struct dev_pm_ops sh_dmae_pm = {
.suspend = sh_dmae_suspend,
.resume = sh_dmae_resume,
SET_SYSTEM_SLEEP_PM_OPS(sh_dmae_suspend, sh_dmae_resume)
SET_RUNTIME_PM_OPS(sh_dmae_runtime_suspend, sh_dmae_runtime_resume,
NULL)
};