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watchdog: fix double lock in watchdog_nmi_enable_all
Commit ab992dc ("watchdog: Fix merge 'conflict'") has introduced an obvious deadlock because of a typo. watchdog_proc_mutex should be unlocked on exit. Thanks to Miroslav Benes who was staring at the code with me and noticed this. Signed-off-by: Michal Hocko <mhocko@suse.cz> Duh-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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