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

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

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 198f70bad908..4b1d8fb04e9b 100644
--- 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 */