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| author | Wan ZongShun <mcuos.com@gmail.com> | 2010-08-10 18:02:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-11 08:59:06 -0700 |
| commit | 0a89b55364e0a4fd4be9bc2c9a697f9b027eb395 (patch) | |
| tree | 6586428d02fe9365201eb28518d93ea27aa0b5da /drivers/rtc/rtc-ds1305.c | |
| parent | 5fc79d85d2ab7ce144bc75e06cab58126249afbb (diff) | |
| download | blackbird-op-linux-0a89b55364e0a4fd4be9bc2c9a697f9b027eb395.tar.gz blackbird-op-linux-0a89b55364e0a4fd4be9bc2c9a697f9b027eb395.zip | |
nuc900/rtc: change the waiting for device ready implement
- add an mdelay(1) to the polling loop to cause less frequent access to
the hardware register.
- change the return value from ENODEV to EPERM if the loop timed out. I
think the 'Operation not permitted' description is more suitable for the
meaning of 'check_rtc_access_enable()' function, it just be used to
judge rtc access operation is permitted or not.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rtc/rtc-ds1305.c')
0 files changed, 0 insertions, 0 deletions
