usb-serial: add missing tests and debug lines

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This patch (as1290) adds some missing tests.  serial_down() isn't
supposed to do anything if the hardware hasn't been initialized, and
serial_close() isn't supposed to do anything if the tty has gotten a
hangup (because serial_hangup() takes care of shutting down the
hardware).

The patch also updates and adds a few debugging lines.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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Alan Stern 2009-09-01 11:39:51 -04:00 • committed by Live-CD User

parent 74556123e0

commit ff8324df11

1 changed files with 17 additions and 4 deletions

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drivers/usb/serial/usb-serial.c

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