USB: serial: fix missing locking on fifo in write callback

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On errors the fifo was reset without any locking. This could race with
write which do kfifo_put and perhaps also chars_in_buffer and write_room.

Every other access to the fifo is protected using the port lock so
better add it to the error path as well.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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Johan Hovold 2010-03-17 23:00:43 +01:00 • committed by Greg Kroah-Hartman

parent 30af7fb5a4

commit 50dbb85287

1 changed files with 5 additions and 2 deletions

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drivers/usb/serial/generic.c

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