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| author | Markus Mayer <markus.mayer@linaro.org> | 2014-01-21 16:10:41 -0800 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-02-06 10:33:46 +0100 |
| commit | bdb93c03c5503aba9a6d98d49e543d879d85d0c4 (patch) | |
| tree | afb30fdc64176939b4ca6f40da02743146dd4694 /lib/usercopy.c | |
| parent | d762bae45a3dd65d02a35b4252598912f7fbcde0 (diff) | |
| download | linux-stable-bdb93c03c5503aba9a6d98d49e543d879d85d0c4.tar.gz linux-stable-bdb93c03c5503aba9a6d98d49e543d879d85d0c4.tar.bz2 linux-stable-bdb93c03c5503aba9a6d98d49e543d879d85d0c4.zip | |
gpio: bcm281xx: Centralize register locking
Rather than unlock/re-lock for every write access, unlock a GPIO when
it is requested and re-lock it when it is freed. As a result, the GPIO
helper functions no longer have to deal with unlocking and re-locking
the register.
In addition, only unlock a specific GPIO rather than unlocking the
entire GPIO bank as before.
Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'lib/usercopy.c')
0 files changed, 0 insertions, 0 deletions