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

mmc_send_if_cond did not zero out mmc_command on stack.

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

diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c
index 71fdb07fd8dede2c81ad0a3e9f8411ffca82d246..da508497a6e049c8d733cb240866e956aa907e7e 100644 (file)
--- a/drivers/mmc/core/sd_ops.c
+++ b/drivers/mmc/core/sd_ops.c
@@ -201,6 +201,8 @@ int mmc_send_if_cond(struct mmc_host *host, u32 ocr)
        static const u8 test_pattern = 0xAA;
        u8 result_pattern;
 
+       memset(&cmd, 0, sizeof(struct mmc_command));
+
        /*
         * To support SD 2.0 cards, we must always invoke SD_SEND_IF_COND
         * before SD_APP_OP_COND. This command will harmlessly fail for