mmc: Explain why we make adjacent mmc_bus_{put,get} calls during rescan.

Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 198f70b..4b1d8fb 100644 (file)
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1531,9 +1531,11 @@ void mmc_rescan(struct work_struct *work)
            && mmc_card_is_removable(host))
                host->bus_ops->detect(host);
 
+       /*
+        * Let mmc_bus_put() free the bus/bus_ops if we've found that
+        * the card is no longer present.
+        */
        mmc_bus_put(host);
-
-
        mmc_bus_get(host);
 
        /* if there still is a card present, stop here */