From 88c849f489f3145a82f56c6497974c4c85237775 Mon Sep 17 00:00:00 2001
From: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Thu, 18 Aug 2011 15:23:48 +0300
Subject: [PATCH] --- yaml --- r: 263695 b: refs/heads/master c:
 778e277cb82411c9002ca28ccbd216c4d9eb9158 h: refs/heads/master i:   263693:
 e2c7de0f519612b2e2ea5cd44c3ab2bd0e2df283   263691:
 b4477cba885dde9adeb73c65118a5a38f55982e5   263687:
 1f6573dcd86654d5058cb54d0de011c704dde340   263679:
 9b318b91cac13ec4f1a72906664d6aaf2ee7aab4 v: v3

---
 [refs]                        |  2 +-
 trunk/drivers/mmc/core/core.c | 31 +++++++++++++++++++++++++++++--
 2 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/[refs] b/[refs]
index 0c24b5e01d2a..475ea56d1b86 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 08c14071fda4e69abb9d5b1566651cd092b158d3
+refs/heads/master: 778e277cb82411c9002ca28ccbd216c4d9eb9158
diff --git a/trunk/drivers/mmc/core/core.c b/trunk/drivers/mmc/core/core.c
index 63ffc65f84af..b27b94078c21 100644
--- a/trunk/drivers/mmc/core/core.c
+++ b/trunk/drivers/mmc/core/core.c
@@ -728,15 +728,17 @@ static inline void mmc_set_ios(struct mmc_host *host)
  */
 void mmc_set_chip_select(struct mmc_host *host, int mode)
 {
+	mmc_host_clk_hold(host);
 	host->ios.chip_select = mode;
 	mmc_set_ios(host);
+	mmc_host_clk_release(host);
 }
 
 /*
  * Sets the host clock to the highest possible frequency that
  * is below "hz".
  */
-void mmc_set_clock(struct mmc_host *host, unsigned int hz)
+static void __mmc_set_clock(struct mmc_host *host, unsigned int hz)
 {
 	WARN_ON(hz < host->f_min);
 
@@ -747,6 +749,13 @@ void mmc_set_clock(struct mmc_host *host, unsigned int hz)
 	mmc_set_ios(host);
 }
 
+void mmc_set_clock(struct mmc_host *host, unsigned int hz)
+{
+	mmc_host_clk_hold(host);
+	__mmc_set_clock(host, hz);
+	mmc_host_clk_release(host);
+}
+
 #ifdef CONFIG_MMC_CLKGATE
 /*
  * This gates the clock by setting it to 0 Hz.
@@ -779,7 +788,7 @@ void mmc_ungate_clock(struct mmc_host *host)
 	if (host->clk_old) {
 		BUG_ON(host->ios.clock);
 		/* This call will also set host->clk_gated to false */
-		mmc_set_clock(host, host->clk_old);
+		__mmc_set_clock(host, host->clk_old);
 	}
 }
 
@@ -807,8 +816,10 @@ void mmc_set_ungated(struct mmc_host *host)
  */
 void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode)
 {
+	mmc_host_clk_hold(host);
 	host->ios.bus_mode = mode;
 	mmc_set_ios(host);
+	mmc_host_clk_release(host);
 }
 
 /*
@@ -816,8 +827,10 @@ void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode)
  */
 void mmc_set_bus_width(struct mmc_host *host, unsigned int width)
 {
+	mmc_host_clk_hold(host);
 	host->ios.bus_width = width;
 	mmc_set_ios(host);
+	mmc_host_clk_release(host);
 }
 
 /**
@@ -1015,8 +1028,10 @@ u32 mmc_select_voltage(struct mmc_host *host, u32 ocr)
 
 		ocr &= 3 << bit;
 
+		mmc_host_clk_hold(host);
 		host->ios.vdd = bit;
 		mmc_set_ios(host);
+		mmc_host_clk_release(host);
 	} else {
 		pr_warning("%s: host doesn't support card's voltages\n",
 				mmc_hostname(host));
@@ -1063,8 +1078,10 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, bool cmd11
  */
 void mmc_set_timing(struct mmc_host *host, unsigned int timing)
 {
+	mmc_host_clk_hold(host);
 	host->ios.timing = timing;
 	mmc_set_ios(host);
+	mmc_host_clk_release(host);
 }
 
 /*
@@ -1072,8 +1089,10 @@ void mmc_set_timing(struct mmc_host *host, unsigned int timing)
  */
 void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type)
 {
+	mmc_host_clk_hold(host);
 	host->ios.drv_type = drv_type;
 	mmc_set_ios(host);
+	mmc_host_clk_release(host);
 }
 
 /*
@@ -1091,6 +1110,8 @@ static void mmc_power_up(struct mmc_host *host)
 {
 	int bit;
 
+	mmc_host_clk_hold(host);
+
 	/* If ocr is set, we use it */
 	if (host->ocr)
 		bit = ffs(host->ocr) - 1;
@@ -1126,10 +1147,14 @@ static void mmc_power_up(struct mmc_host *host)
 	 * time required to reach a stable voltage.
 	 */
 	mmc_delay(10);
+
+	mmc_host_clk_release(host);
 }
 
 static void mmc_power_off(struct mmc_host *host)
 {
+	mmc_host_clk_hold(host);
+
 	host->ios.clock = 0;
 	host->ios.vdd = 0;
 
@@ -1147,6 +1172,8 @@ static void mmc_power_off(struct mmc_host *host)
 	host->ios.bus_width = MMC_BUS_WIDTH_1;
 	host->ios.timing = MMC_TIMING_LEGACY;
 	mmc_set_ios(host);
+
+	mmc_host_clk_release(host);
 }
 
 /*