rt2x00: fix random stalls

[~andy/linux] / drivers / mmc / core / core.c

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 1da45e05132878519d21d695f256f69eb07666ea..f545a3e6eb80587fa3995bbf1413e68b205c9cdf 100644 (file)
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -48,7 +48,7 @@ static struct workqueue_struct *workqueue;
  * performance cost, and for other reasons may not always be desired.
  * So we allow it it to be disabled.
  */
-int use_spi_crc = 1;
+bool use_spi_crc = 1;
 module_param(use_spi_crc, bool, 0);
 
 /*
@@ -58,9 +58,9 @@ module_param(use_spi_crc, bool, 0);
  * overridden if necessary.
  */
 #ifdef CONFIG_MMC_UNSAFE_RESUME
-int mmc_assume_removable;
+bool mmc_assume_removable;
 #else
-int mmc_assume_removable = 1;
+bool mmc_assume_removable = 1;
 #endif
 EXPORT_SYMBOL(mmc_assume_removable);
 module_param_named(removable, mmc_assume_removable, bool, 0644);
@@ -2175,6 +2175,7 @@ void mmc_stop_host(struct mmc_host *host)
 
        mmc_bus_get(host);
        if (host->bus_ops && !host->bus_dead) {
+               /* Calling bus_ops->remove() with a claimed host can deadlock */
                if (host->bus_ops->remove)
                        host->bus_ops->remove(host);
 
@@ -2398,7 +2399,9 @@ int mmc_suspend_host(struct mmc_host *host)
                        if (err == -ENOSYS || !host->bus_ops->resume) {
                                /*
                                 * We simply "remove" the card in this case.
-                                * It will be redetected on resume.
+                                * It will be redetected on resume.  (Calling
+                                * bus_ops->remove() with a claimed host can
+                                * deadlock.)
                                 */
                                if (host->bus_ops->remove)
                                        host->bus_ops->remove(host);
@@ -2491,11 +2494,11 @@ int mmc_pm_notify(struct notifier_block *notify_block,
                if (!host->bus_ops || host->bus_ops->suspend)
                        break;
 
-               mmc_claim_host(host);
-
+               /* Calling bus_ops->remove() with a claimed host can deadlock */
                if (host->bus_ops->remove)
                        host->bus_ops->remove(host);
 
+               mmc_claim_host(host);
                mmc_detach_bus(host);
                mmc_power_off(host);
                mmc_release_host(host);