Unverified Commit 676ce157 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!15363 gpiolib: Fix crash on error in gpiochip_get_ngpios() 

Merge Pull Request from: @ci-robot 
 
PR sync from: Yifan Qiao <qiaoyifan4@huawei.com>
https://mailweb.openeuler.org/archives/list/kernel@openeuler.org/message/ZD36FWGPMDJBZ24RY2AESK6LZD7QTYJH/ 
 
https://gitee.com/openeuler/kernel/issues/IBPULH 
 
Link:https://gitee.com/openeuler/kernel/pulls/15363

 

Reviewed-by: default avatarZhang Peng <zhangpeng362@huawei.com>
Signed-off-by: default avatarZhang Peng <zhangpeng362@huawei.com>
parents 5e67a6f4 c4aea1aa

drivers/gpio/gpiolib.c

+3 −3
Original line number Diff line number Diff line
@@ -723,12 +723,12 @@ int gpiochip_get_ngpios(struct gpio_chip *gc, struct device *dev) 
	}



	if (gc->ngpio == 0) {

		chip_err(gc, "tried to insert a GPIO chip with zero lines\n");

		dev_err(dev, "tried to insert a GPIO chip with zero lines\n");

		return -EINVAL;

	}



	if (gc->ngpio > FASTPATH_NGPIO)

		chip_warn(gc, "line cnt %u is greater than fast path cnt %u\n",

		dev_warn(dev, "line cnt %u is greater than fast path cnt %u\n",

			 gc->ngpio, FASTPATH_NGPIO);



	return 0;