mmc: core: Fix use of uninitialized data in mmc_cmd_app.

mmc_cmd_app did not zero out mmc_command on stack.

Reported-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c
index 76af349c14b4..71fdb07fd8de 100644
--- a/drivers/mmc/core/sd_ops.c
+++ b/drivers/mmc/core/sd_ops.c
@@ -29,6 +29,8 @@ static int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card)
         BUG_ON(!host);
         BUG_ON(card && (card->host != host));
 
+        memset(&cmd, 0, sizeof(struct mmc_command));
+
         cmd.opcode = MMC_APP_CMD;
 
         if (card) {