irqchip/ls-extirq: Fix devm_of_iomap() error check

The devm_of_iomap() function returns an ERR_PTR() encoded error code on
failure. Replace the incorrect check against NULL with IS_ERR().

Fixes: 05cd654829dd ("irqchip/ls-extirq: Convert to a platform driver to make it work again")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Herve Codina <herve.codina@bootlin.com>
Link: https://patch.msgid.link/20260224113610.1129022-3-ioana.ciornei@nxp.com
Closes: https://lore.kernel.org/all/aYXvfbfT6w0TMsXS@stanley.mountain/

diff --git a/drivers/irqchip/irq-ls-extirq.c b/drivers/irqchip/irq-ls-extirq.c
index 96f9c20621cf544ae5d50acba30a5f11a962ae79..d724fe8439801e26c78c897b3289153b16762b8c 100644 (file)
--- a/drivers/irqchip/irq-ls-extirq.c
+++ b/drivers/irqchip/irq-ls-extirq.c
@@ -190,8 +190,10 @@ static int ls_extirq_probe(struct platform_device *pdev)
                return dev_err_probe(dev, -ENOMEM, "Failed to allocate memory\n");
 
        priv->intpcr = devm_of_iomap(dev, node, 0, NULL);
-       if (!priv->intpcr)
-               return dev_err_probe(dev, -ENOMEM, "Cannot ioremap OF node %pOF\n", node);
+       if (IS_ERR(priv->intpcr)) {
+               return dev_err_probe(dev, PTR_ERR(priv->intpcr),
+                                    "Cannot ioremap OF node %pOF\n", node);
+       }
 
        ret = ls_extirq_parse_map(priv, node);
        if (ret)