mmc: make mmc_dev_to_card() macro public

Conversion from struct device to struct mmc_card is used more than in one
place.  Due to this it's better to have public macro for such thing.

Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com>
Cc: Adrian Hunter <adrian.hunter@nokia.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index 5dd8576b5c18..82d39bd4f55f 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -1935,12 +1935,10 @@ static ssize_t mmc_test_show(struct device *dev,
 static ssize_t mmc_test_store(struct device *dev,
         struct device_attribute *attr, const char *buf, size_t count)
 {
-        struct mmc_card *card;
+        struct mmc_card *card = dev_to_mmc_card(dev);
         struct mmc_test_card *test;
         int testcase;
 
-        card = container_of(dev, struct mmc_card, dev);
-
         testcase = simple_strtol(buf, NULL, 10);
 
         test = kzalloc(sizeof(struct mmc_test_card), GFP_KERNEL);