| commit | 08f30ff9811e59c08d1cee043ce55b2e862efe58 | |
| author | Alan Cox <alan@linux.intel.com> | |
| Sat, 19 Sep 2009 20:13:23 +0000 (19 13:13 -0700) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 5 Oct 2009 16:32:34 +0000 (5 09:32 -0700) | ||
| tree | 7adc35cbdcbb9759a93d06d8d43f5e44848ac3ee | treesnapshot (tar.gz zip) |
| parent | 4260dc792fabfd20c8644fa9414b2ae48372365f | commitdiff |
tty: USB hangup is racy
commit d2b391822a11302add9e46476f3da4e18e6de84c upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit d2b391822a11302add9e46476f3da4e18e6de84c upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/usb/serial/usb-serial.c | diffblobblamehistory |