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irqchip/mips-gic: Check the return value of ioremap() in gic_of_init()

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[ Upstream commit 71349cc85e5930dce78ed87084dee098eba24b59 ]

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

Reported-by: Hacash Robot <hacashRobot@santino.com>
Signed-off-by: William Dean <williamsukatube@163.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220723100128.2964304-1-williamsukatube@163.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
William Dean 2022-07-23 18:01:28 +08:00 committed by Greg Kroah-Hartman
parent 8dfb4a99b1
commit 2b8c55900d
1 changed files with 4 additions and 0 deletions
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4
drivers/irqchip/irq-mips-gic.c
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@ -766,6 +766,10 @@ static int __init gic_of_init(struct device_node *node,
}
mips_gic_base = ioremap(gic_base, gic_len);
if (!mips_gic_base) {
pr_err("Failed to ioremap gic_base\n");
return -ENOMEM;
}
gicconfig = read_gic_config();
gic_shared_intrs = gicconfig & GIC_CONFIG_NUMINTERRUPTS;