6.12-stable review patch. If anyone has any objections, please let me know.
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From: Rengarajan S rengarajan.s@microchip.com
commit 194f9f94a5169547d682e9bbcc5ae6d18a564735 upstream.
Resolve kernel panic caused by improper handling of IRQs while accessing GPIO values. This is done by replacing generic_handle_irq with handle_nested_irq.
Fixes: 1f4d8ae231f4 ("misc: microchip: pci1xxxx: Add gpio irq handler and irq helper functions irq_ack, irq_mask, irq_unmask and irq_set_type of irq_chip.") Cc: stable stable@kernel.org Signed-off-by: Rengarajan S rengarajan.s@microchip.com Link: https://lore.kernel.org/r/20241205133626.1483499-2-rengarajan.s@microchip.co... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c +++ b/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c @@ -277,7 +277,7 @@ static irqreturn_t pci1xxxx_gpio_irq_han writel(BIT(bit), priv->reg_base + INTR_STATUS_OFFSET(gpiobank)); spin_unlock_irqrestore(&priv->lock, flags); irq = irq_find_mapping(gc->irq.domain, (bit + (gpiobank * 32))); - generic_handle_irq(irq); + handle_nested_irq(irq); } } spin_lock_irqsave(&priv->lock, flags);