Alan Cox d2b391822a
tty: USB hangup is racy ...
The USB layer uses tty_hangup to deal with unplugs of the physical hardware
(analogous to loss of carrier) and then frees the resources. However the
tty_hangup is asynchronous. As the hangup can sleep we can use tty_vhangup
which is the non async version to avoid freeing resources too early.
Signed-off-by: Alan Cox <alan@linux.intel.com >
Cc: stable <stable@kernel.org >
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de >
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d2b391822a