[PATCH] storvsc: fix kzalloc-simple.cocci warnings

From: kbuild test robot
Date: Tue Nov 22 2016 - 21:58:08 EST


drivers/scsi/storvsc_drv.c:1500:13-20: WARNING: kzalloc should be used for payload, instead of kmalloc/memset


Use kzalloc rather than kmalloc followed by memset with 0

This considers some simple cases that are common and easy to validate
Note in particular that there are no ...s in the rule, so all of the
matched code has to be contiguous

Generated by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci

CC: Cathy Avery <cavery@xxxxxxxxxx>
Signed-off-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---

storvsc_drv.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1497,10 +1497,9 @@ static int storvsc_queuecommand(struct S

payload_sz = (sg_count * sizeof(u64) +
sizeof(struct vmbus_packet_mpb_array));
- payload = kmalloc(payload_sz, GFP_ATOMIC);
+ payload = kzalloc(payload_sz, GFP_ATOMIC);
if (!payload)
return SCSI_MLQUEUE_DEVICE_BUSY;
- memset(payload, 0, payload_sz);
}

payload->range.len = length;