4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chen Ni nichen@iscas.ac.cn
[ Upstream commit a6925165ea82b7765269ddd8dcad57c731aa00de ]
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 Signed-off-by: Sasha Levin sashal@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 994f168b54a80..4ffbc2a63f8f5 100644 --- a/drivers/ata/pata_isapnp.c +++ b/drivers/ata/pata_isapnp.c @@ -81,6 +81,9 @@ 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;