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| author | Jon Flatley <jflat@chromium.org> | 2018-09-20 19:17:54 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-28 15:08:17 +0200 |
| commit | 201af55da8a3986297d7c3493f839dfc96ffd7db (patch) | |
| tree | 06e3cdd663ed2f0918ea552c2ea7f22ba599a857 /Documentation/pi-futex.txt | |
| parent | usb: typec: fusb302: Resolve fixed power role contract setup (diff) | |
| download | linux-201af55da8a3986297d7c3493f839dfc96ffd7db.tar.xz linux-201af55da8a3986297d7c3493f839dfc96ffd7db.zip | |
usb: core: added uevent for over-current
After commit 1cbd53c8cd85 ("usb: core: introduce per-port over-current
counters") usb ports expose a sysfs value 'over_current_count'
to user space. This value on its own is not very useful as it requires
manual polling.
As a solution, fire a udev event from the usb hub device that specifies
the values 'OVER_CURRENT_PORT' and 'OVER_CURRENT_COUNT' that indicate
the path of the usb port where the over-current event occurred and the
value of 'over_current_count' in sysfs. Additionally, call
sysfs_notify() so the sysfs value supports poll().
Signed-off-by: Jon Flatley <jflat@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/pi-futex.txt')
0 files changed, 0 insertions, 0 deletions