tree 8cc6c469235826606383420663d16e29fbdc4cbd
parent f71f94845e0126884eca8ce57a92e30b189c8e71
author Al Viro <viro@ftp.linux.org.uk> 1316042488 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1316048977 -0700

um: winch_interrupt() can happen inside of free_winch()

...  so set winch->fd to -1 before doing free_irq(), to avoid having
winch_interrupt() come from/during the latter and attempt to do
reactivate_fd() on something that's already gone.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>