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[ Upstream commit7dbc0d40d8] If irq_domain_translate_twocell() sets "hwirq" to >= MCHP_EIC_NIRQ (2) then it results in an out of bounds access. The code checks for invalid values, but doesn't set the error code. Return -EINVAL in that case, instead of returning success. Fixes:00fa3461c8("irqchip/mchp-eic: Add support for the Microchip EIC") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev> Link: https://patch.msgid.link/aTfHmOz6IBpTIPU5@stanley.mountain Signed-off-by: Sasha Levin <sashal@kernel.org>