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Commit bf44a417 authored by Sergei Shtylyov's avatar Sergei Shtylyov Committed by Vinod Koul
Browse files

dmaengine: shdmac: extend PM methods 



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: default avatarSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 82bf90c6

drivers/dma/sh/shdmac.c

+3 −5
Original line number Diff line number Diff line
@@ -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)

};