PM / Runtime: Add subsystem data field to struct dev_pm_info

[firefly-linux-kernel-4.4.55.git] / arch / arm / mach-shmobile / pm_runtime.c

diff --git a/arch/arm/mach-shmobile/pm_runtime.c b/arch/arm/mach-shmobile/pm_runtime.c
index 12bb504c7f49c7e0cf6b3b0aa4f68edf070586ab..30bbe9a99ae16e4910ab19546da35f6ff85d9e00 100644 (file)
--- a/arch/arm/mach-shmobile/pm_runtime.c
+++ b/arch/arm/mach-shmobile/pm_runtime.c
@@ -18,6 +18,7 @@
 #include <linux/clk.h>
 #include <linux/sh_clk.h>
 #include <linux/bitmap.h>
+#include <linux/slab.h>
 
 #ifdef CONFIG_PM_RUNTIME
 #define BIT_ONCE 0
@@ -29,22 +30,9 @@ struct pm_runtime_data {
        struct clk *clk;
 };
 
-static void __devres_release(struct device *dev, void *res)
-{
-       struct pm_runtime_data *prd = res;
-
-       dev_dbg(dev, "__devres_release()\n");
-
-       if (test_bit(BIT_CLK_ENABLED, &prd->flags))
-               clk_disable(prd->clk);
-
-       if (test_bit(BIT_ACTIVE, &prd->flags))
-               clk_put(prd->clk);
-}
-
 static struct pm_runtime_data *__to_prd(struct device *dev)
 {
-       return devres_find(dev, __devres_release, NULL, NULL);
+       return dev ? dev->power.subsys_data : NULL;
 }
 
 static void platform_pm_runtime_init(struct device *dev,
@@ -121,14 +109,26 @@ static int platform_bus_notify(struct notifier_block *nb,
 
        dev_dbg(dev, "platform_bus_notify() %ld !\n", action);
 
-       if (action == BUS_NOTIFY_BIND_DRIVER) {
-               prd = devres_alloc(__devres_release, sizeof(*prd), GFP_KERNEL);
+       switch (action) {
+       case BUS_NOTIFY_BIND_DRIVER:
+               prd = kzalloc(sizeof(*prd), GFP_KERNEL);
                if (prd) {
-                       devres_add(dev, prd);
+                       dev->power.subsys_data = prd;
                        dev->pwr_domain = &default_power_domain;
                } else {
                        dev_err(dev, "unable to alloc memory for runtime pm\n");
                }
+               break;
+       case BUS_NOTIFY_UNBOUND_DRIVER:
+               prd = __to_prd(dev);
+               if (prd) {
+                       if (test_bit(BIT_CLK_ENABLED, &prd->flags))
+                               clk_disable(prd->clk);
+
+                       if (test_bit(BIT_ACTIVE, &prd->flags))
+                               clk_put(prd->clk);
+               }
+               break;
        }
 
        return 0;