4.18-stable review patch. If anyone has any objections, please let me know.
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From: Zhouyang Jia jiazhouyang09@gmail.com
[ Upstream commit aa154ea885eb0c2407457ce9c1538d78c95456fa ]
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 Reviewed-by: Johannes Thumshirn jthumshirn@suse.de Acked-by: Manish Rangankar Manish.Rangankar@cavium.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/bnx2i/bnx2i_hwi.c | 2 ++ 1 file changed, 2 insertions(+)
--- 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 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; }