[PATCH -next] scsi: sd_zbc: Remove set but not used variable 'buflen'

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Fixes gcc '-Wunused-but-set-variable' warning:

drivers/scsi/sd_zbc.c: In function 'sd_zbc_check_zones':
drivers/scsi/sd_zbc.c:341:9: warning:
 variable 'buflen' set but not used [-Wunused-but-set-variable]

It is not used since commit d9dd73087a8b ("block: Enhance
blk_revalidate_disk_zones()")

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 drivers/scsi/sd_zbc.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c
index 23281825ec38..0e5ede48f045 100644
--- a/drivers/scsi/sd_zbc.c
+++ b/drivers/scsi/sd_zbc.c
@@ -338,7 +338,6 @@ static int sd_zbc_check_zoned_characteristics(struct scsi_disk *sdkp,
 static int sd_zbc_check_zones(struct scsi_disk *sdkp, unsigned char *buf,
 			      u32 *zblocks)
 {
-	size_t buflen;
 	u64 zone_blocks = 0;
 	sector_t max_lba;
 	unsigned char *rec;
@@ -363,7 +362,6 @@ static int sd_zbc_check_zones(struct scsi_disk *sdkp, unsigned char *buf,
 	}
 
 	/* Parse REPORT ZONES header */
-	buflen = min_t(size_t, get_unaligned_be32(&buf[0]) + 64, SD_BUF_SIZE);
 	rec = buf + 64;
 	zone_blocks = get_unaligned_be64(&rec[8]);
 	if (!zone_blocks || !is_power_of_2(zone_blocks)) {






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