drivers/rtc/rtc-stmp3xxx.c: provide timeout for potentially endless loop polling a HW bit

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It's always a bad idea to poll on HW bits without a timeout.

The i.MX28 RTC can be easily brought into a state in which the RTC is
not running (until after a power-on-reset) and thus the status bits
which are polled in the driver won't ever change.

This patch prevents the kernel from getting stuck in this case.

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Lothar Waßmann 2013-08-13 16:00:56 -07:00 • committed by Linus Torvalds

parent b610ded719

commit 28a0c88312

1 changed files with 25 additions and 10 deletions

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drivers/rtc/rtc-stmp3xxx.c

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