drivers: sh: pm_runtime does not need idle callback

In the runtime_pm idle callback the code assumes that a NULL .runtime_idle
entry is the same as a .runtime_idle entry that returns 0 as a result. This
means the entry in drivers/sh/pm_runtime can be removed in favour of just
leaving the entry NULL.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> [r8a7779 legacy]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
(cherry picked from commit fe95c932a31e7f12bcb6a4e07434462da2ac6e1d)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/drivers/sh/pm_runtime.c b/drivers/sh/pm_runtime.c
index 10c65eb..00b82ec 100644 (file)
--- a/drivers/sh/pm_runtime.c
+++ b/drivers/sh/pm_runtime.c
@@ -21,18 +21,10 @@
 #include <linux/slab.h>
 
 #ifdef CONFIG_PM_RUNTIME
-
-static int default_platform_runtime_idle(struct device *dev)
-{
-       /* suspend synchronously to disable clocks immediately */
-       return 0;
-}
-
 static struct dev_pm_domain default_pm_domain = {
        .ops = {
                .runtime_suspend = pm_clk_suspend,
                .runtime_resume = pm_clk_resume,
-               .runtime_idle = default_platform_runtime_idle,
                USE_PLATFORM_PM_SLEEP_OPS
        },
 };