gpiolib: use gpiochip_get_desc() in gpio_ioctl() (2a2cabd8) · Commits · 戴 / test

Unduplicate the offset check by simply calling gpiochip_get_desc() and checking its return value. Signed-off-by:

drivers/gpio/gpiolib.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -1175,10 +1175,11 @@ static long gpio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)

		if (copy_from_user(&lineinfo, ip, sizeof(lineinfo)))
		return -EFAULT;
		if (lineinfo.line_offset >= gdev->ngpio)
		return -EINVAL;

		desc = &gdev->descs[lineinfo.line_offset];
		desc = gpiochip_get_desc(chip, lineinfo.line_offset);
		if (IS_ERR(desc))
		return PTR_ERR(desc);

		if (desc->name) {
		strncpy(lineinfo.name, desc->name,
		sizeof(lineinfo.name));