[PATCH v3] scsi: libfc: Fix passing zero to 'PTR_ERR' warning

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

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

Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
v3: use PTR_ERR_OR_ZERO
v2: use use IS_ERR in fc_disc_error()
---
 drivers/scsi/libfc/fc_disc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c
index d8cbc9c0e766..43284c3b2903 100644
--- a/drivers/scsi/libfc/fc_disc.c
+++ b/drivers/scsi/libfc/fc_disc.c
@@ -302,7 +302,7 @@ static void fc_disc_error(struct fc_disc *disc, struct fc_frame *fp)
 	unsigned long delay = 0;
 
 	FC_DISC_DBG(disc, "Error %ld, retries %d/%d\n",
-		    PTR_ERR(fp), disc->retry_count,
+		    PTR_ERR_OR_ZERO(fp), disc->retry_count,
 		    FC_DISC_RETRY_LIMIT);
 
 	if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) {
-- 
2.17.1





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