mmc: core: Fix hangs related to insert/remove of cards

[~shefty/rdma-dev.git] / drivers / mmc / core / core.c

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 7289e999d1fce94cca7a05fbf02b947cdba41e13..5ae6b159dbea1af4c327402d33e86e7c95ff400d 100644 (file)
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1192,7 +1192,7 @@ static void mmc_power_up(struct mmc_host *host)
        mmc_host_clk_release(host);
 }
 
-static void mmc_power_off(struct mmc_host *host)
+void mmc_power_off(struct mmc_host *host)
 {
        mmc_host_clk_hold(host);
 
@@ -1289,8 +1289,7 @@ void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops)
 }
 
 /*
- * Remove the current bus handler from a host. Assumes that there are
- * no interesting cards left, so the bus is powered down.
+ * Remove the current bus handler from a host.
  */
 void mmc_detach_bus(struct mmc_host *host)
 {
@@ -1307,8 +1306,6 @@ void mmc_detach_bus(struct mmc_host *host)
 
        spin_unlock_irqrestore(&host->lock, flags);
 
-       mmc_power_off(host);
-
        mmc_bus_put(host);
 }
 
@@ -1893,6 +1890,7 @@ void mmc_stop_host(struct mmc_host *host)
 
                mmc_claim_host(host);
                mmc_detach_bus(host);
+               mmc_power_off(host);
                mmc_release_host(host);
                mmc_bus_put(host);
                return;
@@ -2022,6 +2020,7 @@ int mmc_suspend_host(struct mmc_host *host)
                                host->bus_ops->remove(host);
                        mmc_claim_host(host);
                        mmc_detach_bus(host);
+                       mmc_power_off(host);
                        mmc_release_host(host);
                        host->pm_flags = 0;
                        err = 0;
@@ -2109,6 +2108,7 @@ int mmc_pm_notify(struct notifier_block *notify_block,
                        host->bus_ops->remove(host);
 
                mmc_detach_bus(host);
+               mmc_power_off(host);
                mmc_release_host(host);
                host->pm_flags = 0;
                break;