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Date:   Wed, 19 Aug 2020 10:05:46 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <hare@...e.de>, <jejb@...ux.ibm.com>, <martin.petersen@...cle.com>
CC:     <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH v2] 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 maybe NULL in fc_disc_error(), use IS_ERR to handle this.

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
v2: 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..574e842cefed 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,
+		    IS_ERR(fp) ? PTR_ERR(fp) : 0, disc->retry_count,
 		    FC_DISC_RETRY_LIMIT);
 
 	if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) {
-- 
2.17.1


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