From a6925165ea82b7765269ddd8dcad57c731aa00de Mon Sep 17 00:00:00 2001
From: Chen Ni <nichen@iscas.ac.cn>
Date: Tue, 31 Oct 2023 04:00:07 +0000
Subject: [PATCH] ata: pata_isapnp: Add missing error check for
devm_ioport_map()
Add missing error return check for devm_ioport_map() and return the
error if this function call fails.
Fixes: 0d5ff566779f ("libata: convert to iomap")
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
---
drivers/ata/pata_isapnp.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/ata/pata_isapnp.c b/drivers/ata/pata_isapnp.c
index 25a63d043c8e1..0f77e04240661 100644
--- a/drivers/ata/pata_isapnp.c
+++ b/drivers/ata/pata_isapnp.c
@@ -82,6 +82,9 @@ static int isapnp_init_one(struct pnp_dev *idev, const struct pnp_device_id *dev
if (pnp_port_valid(idev, 1)) {
ctl_addr = devm_ioport_map(&idev->dev,
pnp_port_start(idev, 1), 1);
+ if (!ctl_addr)
+ return -ENOMEM;
+
ap->ioaddr.altstatus_addr = ctl_addr;
ap->ioaddr.ctl_addr = ctl_addr;
ap->ops = &isapnp_port_ops;
--
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