Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'gpio-fixes-for-v5.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fix from Bartosz Golaszewski:
"A single fix for an older problem with the sysfs interface: do not
allow exporting GPIO lines which were marked invalid by the driver"
* tag 'gpio-fixes-for-v5.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: sysfs: Obey valid_mask
+8
+8
drivers/gpio/gpiolib-sysfs.c
+8
drivers/gpio/gpiolib-sysfs.c
···
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458
long gpio;
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459
struct gpio_desc *desc;
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int status;
461
+
struct gpio_chip *gc;
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+
int offset;
461
463
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status = kstrtol(buf, 0, &gpio);
463
465
if (status < 0)
···
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/* reject invalid GPIOs */
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if (!desc) {
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pr_warn("%s: invalid GPIO %ld\n", __func__, gpio);
470
+
return -EINVAL;
471
+
}
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+
gc = desc->gdev->chip;
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+
offset = gpio_chip_hwgpio(desc);
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+
if (!gpiochip_line_is_valid(gc, offset)) {
475
+
pr_warn("%s: GPIO %ld masked\n", __func__, gpio);
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476
return -EINVAL;
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477
}
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