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Alessandro Rubini authored
this commit a90aba09 chardev: return POLLERR if user disables the trigger removed in error the mutex_unlock() from zio_can_w_ctrl(). This results in an immediate deadlock when anybody writes a control structure. The fix is trivial. Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Acked-by: Federico Vaga <federico.vaga@gmail.com>
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