tree 7eba6fe6c15f5f11ffdec779c9979f1ec6b4c6b9
parent 8a28dea3accda319d51a1bf4d3e280771d946f78
author Jiri Kosina <jkosina@suse.cz> 1192831519 +0200
committer Greg Kroah-Hartman <gregkh@suse.de> 1193339925 -0700

USB: usbserial - fix potential deadlock between write() and IRQ

USB: usbserial - fix potential deadlock between write() and IRQ

usb_serial_generic_write() doesn't disable interrupts when taking port->lock,
and could therefore deadlock with usb_serial_generic_read_bulk_callback()
being called from interrupt, taking the same lock. Fix it.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Larry Finger <larry.finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>