nvme: remove zeroout memset call for struct

Declare and initialize structure variables to zero values so that we can
remove zeroout memset calls in the host/core.c.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/nvme/host/core.c

@@ -721,9 +721,7 @@ EXPORT_SYMBOL_GPL(__nvme_check_ready);
 
 static int nvme_toggle_streams(struct nvme_ctrl *ctrl, bool enable)
 {
-	struct nvme_command c;
-
-	memset(&c, 0, sizeof(c));
+	struct nvme_command c = { };
 
 	c.directive.opcode = nvme_admin_directive_send;
 	c.directive.nsid = cpu_to_le32(NVME_NSID_ALL);
@@ -748,9 +746,8 @@ static int nvme_enable_streams(struct nvme_ctrl *ctrl)
 static int nvme_get_stream_params(struct nvme_ctrl *ctrl,
 				  struct streams_directive_params *s, u32 nsid)
 {
-	struct nvme_command c;
+	struct nvme_command c = { };
 
-	memset(&c, 0, sizeof(c));
 	memset(s, 0, sizeof(*s));
 
 	c.directive.opcode = nvme_admin_directive_recv;
@@ -1460,10 +1457,9 @@ static int nvme_features(struct nvme_ctrl *dev, u8 op, unsigned int fid,
 		unsigned int dword11, void *buffer, size_t buflen, u32 *result)
 {
 	union nvme_result res = { 0 };
-	struct nvme_command c;
+	struct nvme_command c = { };
 	int ret;
 
-	memset(&c, 0, sizeof(c));
 	c.features.opcode = op;
 	c.features.fid = cpu_to_le32(fid);
 	c.features.dword11 = cpu_to_le32(dword11);
@@ -1591,9 +1587,8 @@ int nvme_getgeo(struct block_device *bdev, struct hd_geometry *geo)
 static void nvme_init_integrity(struct gendisk *disk, u16 ms, u8 pi_type,
 				u32 max_integrity_segments)
 {
-	struct blk_integrity integrity;
+	struct blk_integrity integrity = { };
 
-	memset(&integrity, 0, sizeof(integrity));
 	switch (pi_type) {
 	case NVME_NS_DPS_PI_TYPE3:
 		integrity.profile = &t10_pi_type3_crc;
@@ -1964,13 +1959,12 @@ static int nvme_send_ns_pr_command(struct nvme_ns *ns, struct nvme_command *c,
 static int nvme_pr_command(struct block_device *bdev, u32 cdw10,
 				u64 key, u64 sa_key, u8 op)
 {
-	struct nvme_command c;
+	struct nvme_command c = { };
 	u8 data[16] = { 0, };
 
 	put_unaligned_le64(key, &data[0]);
 	put_unaligned_le64(sa_key, &data[8]);
 
-	memset(&c, 0, sizeof(c));
 	c.common.opcode = op;
 	c.common.cdw10 = cpu_to_le32(cdw10);
 
@@ -2042,9 +2036,8 @@ int nvme_sec_submit(void *data, u16 spsp, u8 secp, void *buffer, size_t len,
 		bool send)
 {
 	struct nvme_ctrl *ctrl = data;
-	struct nvme_command cmd;
+	struct nvme_command cmd = { };
 
-	memset(&cmd, 0, sizeof(cmd));
 	if (send)
 		cmd.common.opcode = nvme_admin_security_send;
 	else