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irqchip/aslint-sswi: Fix error check of of_io_request_and_map() result

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of_io_request_and_map() returns IOMEM_ERR_PTR() on failure which is
non-NULL.

Fixes: 8a7f030df8 ("irqchip/aslint-sswi: Request IO memory resource")
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Vladimir Kondratiev <vladimir.kondratiev@mobileye.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260118082843.2786630-1-vladimir.kondratiev@mobileye.com
Closes: https://lore.kernel.org/all/20260116124257.78357-1-clm@meta.com
This commit is contained in:
Vladimir Kondratiev 2026-01-18 10:28:43 +02:00 • committed by Thomas Gleixner
parent a34d398c83
commit a384f2ed88
1 changed files with 4 additions and 2 deletions
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6
drivers/irqchip/irq-aclint-sswi.c
View file

@ -110,8 +110,10 @@ static int __init aclint_sswi_probe(struct fwnode_handle *fwnode)
return -EINVAL;
reg = of_io_request_and_map(to_of_node(fwnode), 0, NULL);
if (!reg)
return -ENOMEM;
if (IS_ERR(reg)) {
pr_err("%pfwP: Failed to map MMIO region\n", fwnode);
return PTR_ERR(reg);
}
/* Parse SSWI setting */
rc = aclint_sswi_parse_irq(fwnode, reg);