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H A D | pinctrl-amd.c | 0cf9e48f Fri Apr 21 07:06:23 CDT 2023 Kornel Dulęba <korneld@chromium.org> pinctrl: amd: Detect and mask spurious interrupts
Leverage gpiochip_line_is_irq to check whether a pin has an irq associated with it. The previous check ("irq == 0") didn't make much sense. The irq variable refers to the pinctrl irq, and has nothing do to with an individual pin.
On some systems, during suspend/resume cycle, the firmware leaves an interrupt enabled on a pin that is not used by the kernel. Without this patch that caused an interrupt storm.
Cc: stable@vger.kernel.org Link: https://bugzilla.kernel.org/show_bug.cgi?id=217315 Signed-off-by: Kornel Dulęba <korneld@chromium.org> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://lore.kernel.org/r/20230421120625.3366-4-mario.limonciello@amd.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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