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power: reset: at91-reset: check properly the return value of devm_of_iomap

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[ Upstream commit f558c8072c ]

devm_of_iomap() returns error code or valid pointer. Check its return
value with IS_ERR().

Fixes: bd3127733f ("power: reset: at91-reset: use devm_of_iomap")
Reported-by: Cristian Birsan <cristian.birsan@microchip.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Claudiu Beznea 2021-09-30 13:09:28 +03:00 committed by Greg Kroah-Hartman
parent 9a8d7bdd5b
commit a1e06f92b2
1 changed files with 2 additions and 2 deletions
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4
drivers/power/reset/at91-reset.c
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@ -193,7 +193,7 @@ static int __init at91_reset_probe(struct platform_device *pdev)
return -ENOMEM;
reset->rstc_base = devm_of_iomap(&pdev->dev, pdev->dev.of_node, 0, NULL);
if (!reset->rstc_base) {
if (IS_ERR(reset->rstc_base)) {
dev_err(&pdev->dev, "Could not map reset controller address\n");
return -ENODEV;
}
@ -203,7 +203,7 @@ static int __init at91_reset_probe(struct platform_device *pdev)
for_each_matching_node_and_match(np, at91_ramc_of_match, &match) {
reset->ramc_lpr = (u32)match->data;
reset->ramc_base[idx] = devm_of_iomap(&pdev->dev, np, 0, NULL);
if (!reset->ramc_base[idx]) {
if (IS_ERR(reset->ramc_base[idx])) {
dev_err(&pdev->dev, "Could not map ram controller address\n");
of_node_put(np);
return -ENODEV;