---

yaml
---
r: 219012
b: refs/heads/master
c: ed2a978
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 87973ba27b751353e2915cb3aa5c0e0dc6a79a4f
+refs/heads/master: ed2a9785942b0986ac858f3f48d7fc5f7c7183de

trunk/drivers/mmc/core/sdio_bus.c

@@ -189,12 +189,41 @@ static int sdio_bus_remove(struct device *dev)
 
 #ifdef CONFIG_PM_RUNTIME
 
+static int sdio_bus_pm_prepare(struct device *dev)
+{
+	/*
+	 * Resume an SDIO device which was suspended at run time at this
+	 * point, in order to allow standard SDIO suspend/resume paths
+	 * to keep working as usual.
+	 *
+	 * Ultimately, the SDIO driver itself will decide (in its
+	 * suspend handler, or lack thereof) whether the card should be
+	 * removed or kept, and if kept, at what power state.
+	 *
+	 * At this point, PM core have increased our use count, so it's
+	 * safe to directly resume the device. After system is resumed
+	 * again, PM core will drop back its runtime PM use count, and if
+	 * needed device will be suspended again.
+	 *
+	 * The end result is guaranteed to be a power state that is
+	 * coherent with the device's runtime PM use count.
+	 *
+	 * The return value of pm_runtime_resume is deliberately unchecked
+	 * since there is little point in failing system suspend if a
+	 * device can't be resumed.
+	 */
+	pm_runtime_resume(dev);
+
+	return 0;
+}
+
 static const struct dev_pm_ops sdio_bus_pm_ops = {
 	SET_RUNTIME_PM_OPS(
 		pm_generic_runtime_suspend,
 		pm_generic_runtime_resume,
 		pm_generic_runtime_idle
 	)
+	.prepare = sdio_bus_pm_prepare,
 };
 
 #define SDIO_PM_OPS_PTR	(&sdio_bus_pm_ops)