diff options
| author |   Linus Walleij <linus.walleij@linaro.org> | 2016-02-11 10:28:44 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-02-11 20:29:46 +0100 |
| commit | 33a68e86fd7741f782c71a0daa9111b352e94445 (patch) | |
| tree | 96e6ee9894a0513d98e43300dd17bec0a45e36a4 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | gpio: reflect base and ngpio into gpio_device (diff) | |
| download | wireguard-linux-33a68e86fd7741f782c71a0daa9111b352e94445.tar.xz wireguard-linux-33a68e86fd7741f782c71a0daa9111b352e94445.zip | |
gpio: reference count the gpio device for each desc
Every time a descriptor is retrieved from the gpiolib, we issue
module_get() to reference count the module supplying the GPIOs.
We also need to call device_get() and device_put() as we also
reference the backing gpio_device when doing this.
Since the sysfs GPIO interface is using gpiod_get() this will
also reference count the sysfs requests until all GPIOs are
unexported.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions