https://github.com/torvalds/linux
Revision 59fba0869acae06ff594dd7e9808ed673f53538a authored by Arnd Bergmann on 10 January 2018, 16:35:43 UTC, committed by Kishon Vijay Abraham I on 12 March 2018, 09:41:59 UTC
While the specific UFS PHY drivers (14nm and 20nm) have a module license, the common base module does not, leading to a Kbuild failure: WARNING: modpost: missing MODULE_LICENSE() in drivers/phy/qualcomm/phy-qcom-ufs.o FATAL: modpost: GPL-incompatible module phy-qcom-ufs.ko uses GPL-only symbol 'clk_enable' This adds a module description and license tag to fix the build. I added both Yaniv and Vivek as authors here, as Yaniv sent the initial submission, while Vivek did most of the work since. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
1 parent 7928b2c
Tip revision: 59fba0869acae06ff594dd7e9808ed673f53538a authored by Arnd Bergmann on 10 January 2018, 16:35:43 UTC
phy: qcom-ufs: add MODULE_LICENSE tag
phy: qcom-ufs: add MODULE_LICENSE tag
Tip revision: 59fba08
ledtrig-oneshot.txt
One-shot LED Trigger
====================
This is a LED trigger useful for signaling the user of an event where there are
no clear trap points to put standard led-on and led-off settings. Using this
trigger, the application needs only to signal the trigger when an event has
happened, than the trigger turns the LED on and than keeps it off for a
specified amount of time.
This trigger is meant to be usable both for sporadic and dense events. In the
first case, the trigger produces a clear single controlled blink for each
event, while in the latter it keeps blinking at constant rate, as to signal
that the events are arriving continuously.
A one-shot LED only stays in a constant state when there are no events. An
additional "invert" property specifies if the LED has to stay off (normal) or
on (inverted) when not rearmed.
The trigger can be activated from user space on led class devices as shown
below:
echo oneshot > trigger
This adds sysfs attributes to the LED that are documented in:
Documentation/ABI/testing/sysfs-class-led-trigger-oneshot
Example use-case: network devices, initialization:
echo oneshot > trigger # set trigger for this led
echo 33 > delay_on # blink at 1 / (33 + 33) Hz on continuous traffic
echo 33 > delay_off
interface goes up:
echo 1 > invert # set led as normally-on, turn the led on
packet received/transmitted:
echo 1 > shot # led starts blinking, ignored if already blinking
interface goes down
echo 0 > invert # set led as normally-off, turn the led off
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