From e61b3125a4f036b3c6b87ffd656fc1ab00440ae9 Mon Sep 17 00:00:00 2001
From: Xie Shaowen <studentxswpy@163.com>
Date: Tue, 2 Aug 2022 15:20:33 +0800
Subject: [PATCH] Input: gscps2 - check return value of ioremap() in
 gscps2_probe()
Git-commit: e61b3125a4f036b3c6b87ffd656fc1ab00440ae9
References: git-fixes
Patch-mainline: v6.0-rc1

The function ioremap() in gscps2_probe() can fail, so
its return value should be checked.

Fixes: 4bdc0d676a643 ("remove ioremap_nocache and devm_ioremap_nocache")
Cc: <stable@vger.kernel.org> # v5.6+
Reported-by: Hacash Robot <hacashRobot@santino.com>
Signed-off-by: Xie Shaowen <studentxswpy@163.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
 drivers/input/serio/gscps2.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/input/serio/gscps2.c
+++ b/drivers/input/serio/gscps2.c
@@ -351,6 +351,10 @@ static int gscps2_probe(struct parisc_de
 	ps2port->port = serio;
 	ps2port->padev = dev;
 	ps2port->addr = ioremap_nocache(hpa, GSC_STATUS + 4);
+	if (!ps2port->addr) {
+		ret = -ENOMEM;
+		goto fail_nomem;
+	}
 	spin_lock_init(&ps2port->lock);
 
 	gscps2_reset(ps2port);