[PATCH 3/3] sh_mmcif / PM: Use PM QoS requests

["Rafael J. Wysocki" <rjw@sisk.pl>]

From: Rafael J. Wysocki <rjw@sisk.pl>

Make sh_mmcif populate the pm_qos_req member of struct mmc_host, to
let the core know that it should create the pm_latency_limit_ms
host attribute for it, and set the defaul value of that attribute
to 100 ms.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
---
 drivers/mmc/host/sh_mmcif.c |    9 +++++++++
 1 file changed, 9 insertions(+)

Index: linux/drivers/mmc/host/sh_mmcif.c
===================================================================
--- linux.orig/drivers/mmc/host/sh_mmcif.c
+++ linux/drivers/mmc/host/sh_mmcif.c
@@ -57,6 +57,7 @@
 #include <linux/pagemap.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/module.h>
 
@@ -1327,6 +1328,12 @@ static int __devinit sh_mmcif_probe(stru
 	if (ret < 0)
 		goto clean_up2;
 
+	mmc->pm_qos_req = kzalloc(sizeof(*mmc->pm_qos_req), GFP_KERNEL);
+	if (mmc->pm_qos_req)
+		mmc->pm_qos_val = 100;
+	else
+		dev_err(&pdev->dev, "Not enough memory for PM QoS.\n");
+
 	INIT_DELAYED_WORK(&host->timeout_work, mmcif_timeout_work);
 
 	sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
@@ -1397,6 +1404,8 @@ static int __devexit sh_mmcif_remove(str
 
 	platform_set_drvdata(pdev, NULL);
 
+	kfree(host->mmc->pm_qos_req);
+
 	clk_disable(host->hclk);
 	mmc_free_host(host->mmc);
 	pm_runtime_put_sync(&pdev->dev);