Revision e7e11d8ba807d451857b5c68abe249c7fc2b980f authored by Alexander Stein on 29 May 2012, 22:07:30 UTC, committed by Linus Torvalds on 29 May 2012, 23:22:32 UTC
When issuing the following command:
for I in 0 1 2 3 4 5 6 7; do
echo 0 > /sys/class/leds/pca955x\:${I}/brightness;
done
It is possible that all the pca955x_read_ls calls are done sequentially
before any pca955x_write_ls call is done. This updates the LS only to
the last LED update in its set.
Fix this by using a global lock for the pca995x device during
pca955x_led_work. Also used a struct for shared data betreen all LEDs.
[akpm@linux-foundation.org: revert unintentional rename of pca955x_ledsel()]
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 44e1e9f
| File | Mode | Size |
|---|---|---|
| Makefile | -rw-r--r-- | 167 bytes |
| page-types.c | -rw-r--r-- | 22.7 KB |
| slabinfo.c | -rw-r--r-- | 34.1 KB |
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