1 files changed, 39 insertions, 10 deletions

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index f545a3e6eb80..690255c7d4dc 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -290,8 +290,11 @@ static void mmc_wait_for_req_done(struct mmc_host *host,
 static void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq,
                  bool is_first_req)
 {
-        if (host->ops->pre_req)
+        if (host->ops->pre_req) {
+                mmc_host_clk_hold(host);
                 host->ops->pre_req(host, mrq, is_first_req);
+                mmc_host_clk_release(host);
+        }
 }
 
 /**
@@ -306,8 +309,11 @@ static void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq,
 static void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq,
                          int err)
 {
-        if (host->ops->post_req)
+        if (host->ops->post_req) {
+                mmc_host_clk_hold(host);
                 host->ops->post_req(host, mrq, err);
+                mmc_host_clk_release(host);
+        }
 }
 
 /**
@@ -620,7 +626,9 @@ int mmc_host_enable(struct mmc_host *host)
                 int err;
 
                 host->en_dis_recurs = 1;
+                mmc_host_clk_hold(host);
                 err = host->ops->enable(host);
+                mmc_host_clk_release(host);
                 host->en_dis_recurs = 0;
 
                 if (err) {
@@ -640,7 +648,9 @@ static int mmc_host_do_disable(struct mmc_host *host, int lazy)
                 int err;
 
                 host->en_dis_recurs = 1;
+                mmc_host_clk_hold(host);
                 err = host->ops->disable(host, lazy);
+                mmc_host_clk_release(host);
                 host->en_dis_recurs = 0;
 
                 if (err < 0) {
@@ -1121,6 +1131,10 @@ int mmc_regulator_set_ocr(struct mmc_host *mmc,
                  * might not allow this operation
                  */
                 voltage = regulator_get_voltage(supply);
+
+                if (mmc->caps2 & MMC_CAP2_BROKEN_VOLTAGE)
+                        min_uV = max_uV = voltage;
+
                 if (voltage < 0)
                         result = voltage;
                 else if (voltage < min_uV || voltage > max_uV)
@@ -1203,8 +1217,11 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, bool cmd11
 
         host->ios.signal_voltage = signal_voltage;
 
-        if (host->ops->start_signal_voltage_switch)
+        if (host->ops->start_signal_voltage_switch) {
+                mmc_host_clk_hold(host);
                 err = host->ops->start_signal_voltage_switch(host, &host->ios);
+                mmc_host_clk_release(host);
+        }
 
         return err;
 }
@@ -1239,6 +1256,7 @@ static void mmc_poweroff_notify(struct mmc_host *host)
         int err = 0;
 
         card = host->card;
+        mmc_claim_host(host);
 
         /*
          * Send power notify command only if card
@@ -1269,6 +1287,7 @@ static void mmc_poweroff_notify(struct mmc_host *host)
                 /* Set the card state to no notification after the poweroff */
                 card->poweroff_notify_state = MMC_NO_POWER_NOTIFICATION;
         }
+        mmc_release_host(host);
 }
 
 /*
@@ -1327,12 +1346,28 @@ static void mmc_power_up(struct mmc_host *host)
 
 void mmc_power_off(struct mmc_host *host)
 {
+        int err = 0;
         mmc_host_clk_hold(host);
 
         host->ios.clock = 0;
         host->ios.vdd = 0;
 
-        mmc_poweroff_notify(host);
+        /*
+         * For eMMC 4.5 device send AWAKE command before
+         * POWER_OFF_NOTIFY command, because in sleep state
+         * eMMC 4.5 devices respond to only RESET and AWAKE cmd
+         */
+        if (host->card && mmc_card_is_sleep(host->card) &&
+            host->bus_ops->resume) {
+                err = host->bus_ops->resume(host);
+
+                if (!err)
+                        mmc_poweroff_notify(host);
+                else
+                        pr_warning("%s: error %d during resume "
+                                   "(continue with poweroff sequence)\n",
+                                   mmc_hostname(host), err);
+        }
 
         /*
          * Reset ocr mask to be the highest possible voltage supported for
@@ -2386,12 +2421,6 @@ int mmc_suspend_host(struct mmc_host *host)
                  */
                 if (mmc_try_claim_host(host)) {
                         if (host->bus_ops->suspend) {
-                                /*
-                                 * For eMMC 4.5 device send notify command
-                                 * before sleep, because in sleep state eMMC 4.5
-                                 * devices respond to only RESET and AWAKE cmd
-                                 */
-                                mmc_poweroff_notify(host);
                                 err = host->bus_ops->suspend(host);
                         }
                         mmc_do_release_host(host);