| commit | 1931479788c5e3c0396a0bde3606e517c64b9f95 | |
| author | Bartosz Golaszewski <bgolaszewski@baylibre.com> | |
| Wed, 26 Feb 2020 13:53:23 +0000 (26 14:53 +0100) | ||
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | |
| Mon, 2 Mar 2020 07:52:55 +0000 (2 08:52 +0100) | ||
| tree | 6ae88024c465be5f25baa035323808269c3f196c | treesnapshot (tar.gz zip) |
| parent | 48543bd8e92880b1ca81b15cf392103dc82cd3e0 | commitdiff |
gpiolib: fix bitmap operations related to line event watching
When operating on the bits of watched_lines bitmap, we're using
desc_to_gpio() which returns the GPIO number from the global numberspace.
This leads to all sorts of memory corruptions and invalid behavior. We
should switch to using gpio_chip_hwgpio() instead.
Fixes: 51c1064e82e7 ("gpiolib: add new ioctl() for monitoring changes in line info")
Reported-by: Kent Gibson <warthog618@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Tested-by: Kent Gibson <warthog618@gmail.com>
When operating on the bits of watched_lines bitmap, we're using
desc_to_gpio() which returns the GPIO number from the global numberspace.
This leads to all sorts of memory corruptions and invalid behavior. We
should switch to using gpio_chip_hwgpio() instead.
Fixes: 51c1064e82e7 ("gpiolib: add new ioctl() for monitoring changes in line info")
Reported-by: Kent Gibson <warthog618@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Tested-by: Kent Gibson <warthog618@gmail.com>
| drivers/gpio/gpiolib.c | diffblobblamehistory |