tty: USB hangup is racy

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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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Alan Cox 2009-09-19 13:13:23 -07:00 • committed by Live-CD User

parent 9b80fee149

commit d2b391822a

1 changed files with 1 additions and 4 deletions

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drivers/usb/serial/usb-serial.c

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