From: Colin Ian King <colin.i.king@gmail.com>
Date: Fri, 18 Mar 2022 01:30:14 +0000
Subject: nvmet: remove redundant assignment after left shift
Patch-mainline: v5.18-rc1
Git-commit: 63bc732c3aefaa0ad61e290fded9de0f5c8ccd0e
References: jsc#PED-1183

The left shift is followed by a re-assignment back to cc_css, the
assignment is redundant.  Fix this by replacing the "<<=" operator with
"<<" instead.

This cleans up the clang scan build warning:

drivers/nvme/target/core.c:1124:10: warning: Although the value stored to 'cc_css' is used in the enclosing expression, the value is never actually read from 'cc_css' [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
 drivers/nvme/target/core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -1123,7 +1123,7 @@ static inline u8 nvmet_cc_iocqes(u32 cc)
 
 static inline bool nvmet_css_supported(u8 cc_css)
 {
-	switch (cc_css <<= NVME_CC_CSS_SHIFT) {
+	switch (cc_css << NVME_CC_CSS_SHIFT) {
 	case NVME_CC_CSS_NVM:
 	case NVME_CC_CSS_CSI:
 		return true;