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 <[email protected]>.

---
The patch is against the 'next' branch of Vinod Koul's 'slave-dma.git' repo.

Changes in version 2:
- enclosed sh_dmae_{suspend|resume}() into #ifdef CONFIG_PM_SLEEP, modified the changelog accordingly;
- fixed typo in the changelog.

 drivers/dma/sh/shdmac.c |    8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

Index: slave-dma/drivers/dma/sh/shdmac.c =================================--- slave-dma.orig/drivers/dma/sh/shdmac.c +++ slave-dma/drivers/dma/sh/shdmac.c
@@ -600,7 +600,9 @@ static int sh_dmae_runtime_resume(struct

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

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)
};