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authorTimur Tabi <timur@freescale.com>2010-12-03 19:51:43 +0300
committerWim Van Sebroeck <wim@iguana.be>2011-01-12 13:24:27 +0300
commit5d63c13415db2819590bba975dd023eaa593ddc3 (patch)
treec1a99558bd8d6f74f1f3753bf7e8d2a56c27fd20 /lib/Makefile
parenta787e71068d7c2e438d8a5a38a7e1385389819f0 (diff)
downloadlinux-5d63c13415db2819590bba975dd023eaa593ddc3.tar.xz
watchdog: add CONFIG_WATCHDOG_NOWAYOUT support to PowerPC Book-E watchdog driver
Normally, the watchdog is disabled when dev/watchdog is closed, but if CONFIG_WATCHDOG_NOWAYOUT is defined, then it means that the watchdog should remain enabled. So we should disable it only if CONFIG_WATCHDOG_NOWAYOUT is not defined. Also ensure that /dev/watchdog is only opened by one process at a time. That way, a second process can't accidentally disable the watchdog while the first process has it open. There shouldn't be any need for more than one process to open /dev/watchdog anyway. Signed-off-by: Timur Tabi <timur@freescale.com> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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