From: Zhouyang Jia <jiazhouyang09@gmail.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>,
QLogic-Storage-Upstream@qlogic.com,
"James E.J. Bottomley" <jejb@linux.vnet.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] scsi: bnx2i: add error handling for ioremap_nocache
Date: Tue, 12 Jun 2018 11:13:00 +0800 [thread overview]
Message-ID: <1528773180-37120-1-git-send-email-jiazhouyang09@gmail.com> (raw)
When ioremap_nocache fails, the lack of error-handling code may
cause unexpected results.
This patch adds error-handling code after calling ioremap_nocache.
Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com>
---
drivers/scsi/bnx2i/bnx2i_hwi.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/scsi/bnx2i/bnx2i_hwi.c b/drivers/scsi/bnx2i/bnx2i_hwi.c
index 8f03a86..e9e669a 100644
--- a/drivers/scsi/bnx2i/bnx2i_hwi.c
+++ b/drivers/scsi/bnx2i/bnx2i_hwi.c
@@ -2727,6 +2727,8 @@ int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep)
BNX2X_DOORBELL_PCI_BAR);
reg_off = (1 << BNX2X_DB_SHIFT) * (cid_num & 0x1FFFF);
ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4);
+ if (!ep->qp.ctx_base)
+ return -ENOMEM;
goto arm_cq;
}
--
2.7.4
next reply other threads:[~2018-06-12 3:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-12 3:13 Zhouyang Jia [this message]
2018-06-12 7:50 ` Rangankar, Manish
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