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scsi: libfc: Fix passing zero to 'PTR_ERR' warning 

drivers/scsi/libfc/fc_disc.c:304
 fc_disc_error() warn: passing zero to 'PTR_ERR'

fp may be NULL in fc_disc_error(), use PTR_ERR_OR_ZERO to handle this.

Link: https://lore.kernel.org/r/20200909135432.36772-1-yuehaibing@huawei.com
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
YueHaibing 2020-09-09 21:54:32 +08:00 committed by Martin K. Petersen
parent bff8b14b09
commit a9e81c2922
1 changed files with 2 additions and 2 deletions
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4
drivers/scsi/libfc/fc_disc.c
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@ -301,8 +301,8 @@ static void fc_disc_error(struct fc_disc *disc, struct fc_frame *fp)
struct fc_lport *lport = fc_disc_lport(disc);
unsigned long delay = 0;
FC_DISC_DBG(disc, "Error %ld, retries %d/%d\n",
PTR_ERR(fp), disc->retry_count,
FC_DISC_DBG(disc, "Error %d, retries %d/%d\n",
PTR_ERR_OR_ZERO(fp), disc->retry_count,
FC_DISC_RETRY_LIMIT);
if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) {