This is a note to let you know that I've just added the patch titled mfd: ipaq-micro: Fix error check return value of platform_get_irq() to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mfd-ipaq-micro-fix-error-check-return-value-of-platf.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 7ca94b21a6dec44c8ae687bec1dbe5205fb5b05c Author: Lv Ruyi <lv.ruyi@xxxxxxxxxx> Date: Tue Apr 12 08:53:05 2022 +0000 mfd: ipaq-micro: Fix error check return value of platform_get_irq() [ Upstream commit 3b49ae380ce1a3054e0c505dd9a356b82a5b48e8 ] platform_get_irq() return negative value on failure, so null check of irq is incorrect. Fix it by comparing whether it is less than zero. Fixes: dcc21cc09e3c ("mfd: Add driver for Atmel Microcontroller on iPaq h3xxx") Reported-by: Zeal Robot <zealci@xxxxxxxxxx> Signed-off-by: Lv Ruyi <lv.ruyi@xxxxxxxxxx> Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx> Link: https://lore.kernel.org/r/20220412085305.2533030-1-lv.ruyi@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/mfd/ipaq-micro.c b/drivers/mfd/ipaq-micro.c index e92eeeb67a98..4cd5ecc72211 100644 --- a/drivers/mfd/ipaq-micro.c +++ b/drivers/mfd/ipaq-micro.c @@ -403,7 +403,7 @@ static int __init micro_probe(struct platform_device *pdev) micro_reset_comm(micro); irq = platform_get_irq(pdev, 0); - if (!irq) + if (irq < 0) return -EINVAL; ret = devm_request_irq(&pdev->dev, irq, micro_serial_isr, IRQF_SHARED, "ipaq-micro",