pwm: Set class for exported channels in sysfs

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Notifications for devices without bus or class set get dropped by
dev_uevent_filter(). Adding the class to the exported child matches
what the GPIO subsystem is doing.

With this change exporting a channel triggers a udev event, which
gives userspace a chance to fixup permissions and makes it possible
for non-root users to make use of the PWM subsystem.

Signed-off-by: Gottfried Haider <gottfried.haider@gmail.com>
CC: Thierry Reding <thierry.reding@gmail.com>
CC: H Hartley Sweeten <hsweeten@visionengravers.com>
CC: linux-pwm@vger.kernel.org
CC: linux-arm-kernel@lists.infradead.org
CC: linux-rpi-kernel@lists.infradead.org
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

...

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Gottfried Haider 2017-09-26 11:59:51 +00:00 • committed by Thierry Reding

parent 4fbd8d194f

commit 7e5d1fd75c

1 changed files with 1 additions and 0 deletions

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drivers/pwm/sysfs.c

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