Revision b794e252f5c1c640097348566dd85d463698ce90 authored by David S. Miller on 20 December 2016, 19:15:45 UTC, committed by David S. Miller on 20 December 2016, 19:15:45 UTC
Xin Long says: ==================== sctp: fix the issue that may copy duplicate addrs into assoc's bind address list Patch 1/2 is to fix some indent level. Given that we have kernels out there with this issue, patch 2/2 also fix sctp_raw_to_bind_addrs. v1 -> v2: Explain why we didn't filter the duplicate addresses when global address list gets updated in patch 2/2 changelog. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
uleds.txt
Userspace LEDs
==============
The uleds driver supports userspace LEDs. This can be useful for testing
triggers and can also be used to implement virtual LEDs.
Usage
=====
When the driver is loaded, a character device is created at /dev/uleds. To
create a new LED class device, open /dev/uleds and write a uleds_user_dev
structure to it (found in kernel public header file linux/uleds.h).
#define LED_MAX_NAME_SIZE 64
struct uleds_user_dev {
char name[LED_MAX_NAME_SIZE];
};
A new LED class device will be created with the name given. The name can be
any valid sysfs device node name, but consider using the LED class naming
convention of "devicename:color:function".
The current brightness is found by reading a single byte from the character
device. Values are unsigned: 0 to 255. Reading will block until the brightness
changes. The device node can also be polled to notify when the brightness value
changes.
The LED class device will be removed when the open file handle to /dev/uleds
is closed.
Multiple LED class devices are created by opening additional file handles to
/dev/uleds.
See tools/leds/uledmon.c for an example userspace program.
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