[PATCH 1/2] mmc core block.c: initialize mmc_blk_ioc_data

[mikko.rapeli@linaro.org]

From: Mikko Rapeli <mikko.rapeli@linaro.org>

Commit "mmc: core: Use mrq.sbc in close-ended ffu" adds flags uint to
struct mmc_blk_ioc_data but it does not get initialized for RPMB ioctls
which now fail.

Fix this by always initializing the struct and flags to zero.

Fixes access to RPMB storage.

Fixes: 4d0c8d0aef63 ("mmc: core: Use mrq.sbc in close-ended ffu")

Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218587

Link: https://lore.kernel.org/all/20231129092535.3278-1-avri.altman@wdc.com/

Cc: Avri Altman <avri.altman@wdc.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: linux-mmc@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org>
---
 drivers/mmc/core/block.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 32d49100dff5..0df627de9cee 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -413,7 +413,7 @@ static struct mmc_blk_ioc_data *mmc_blk_ioctl_copy_from_user(
 	struct mmc_blk_ioc_data *idata;
 	int err;
 
-	idata = kmalloc(sizeof(*idata), GFP_KERNEL);
+	idata = kzalloc(sizeof(*idata), GFP_KERNEL);
 	if (!idata) {
 		err = -ENOMEM;
 		goto out;
-- 
2.34.1