[PATCH] scsi: Have scsi_init_dev_desc_priv() use memset

[Tom Rini]

When we do not have CONFIG_BOUNCE_BUFFER enabled, inside of
scsi_init_dev_desc_priv we never set the 'bb' field to false, we only
initialize it to true when CONFIG_BOUNCE_BUFFER is set. Given that we
have a number of other fields here we had been explicitly setting to
zero, change to first calling memset to clear the struct and then
initialize only the fields that need non-zero default values.

Addresses-Coverity-ID: 467407 ("Uninitialized variables (UNINIT)")
Fixes: 81bd22e935dc ("rockchip: block: blk-uclass: add bounce buffer flag to blk_desc")
Signed-off-by: Tom Rini <trini at konsulko.com>
---
Cc: Johan Jonker <jbx6244 at gmail.com>
---
 drivers/scsi/scsi.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 363047d0f72c..7dfe0c5e0562 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -368,15 +368,12 @@ static void scsi_setup_test_unit_ready(struct scsi_cmd *pccb)
  */
 static void scsi_init_dev_desc_priv(struct blk_desc *dev_desc)
 {
+	memset(dev_desc, 0, sizeof(struct blk_desc));
 	dev_desc->target = 0xff;
 	dev_desc->lun = 0xff;
 	dev_desc->log2blksz =
 		LOG2_INVALID(typeof(dev_desc->log2blksz));
 	dev_desc->type = DEV_TYPE_UNKNOWN;
-	dev_desc->vendor[0] = 0;
-	dev_desc->product[0] = 0;
-	dev_desc->revision[0] = 0;
-	dev_desc->removable = false;
 #if IS_ENABLED(CONFIG_BOUNCE_BUFFER)
 	dev_desc->bb = true;
 #endif	/* CONFIG_BOUNCE_BUFFER */
-- 
2.34.1