USB: serial: metro-usb: stop I/O after failed open

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commit 2339536d22 upstream.

Make sure to kill the interrupt-in URB after a failed open request.
Apart from saving power (and avoiding stale input after a later
successful open), this also prevents a NULL-deref in the completion
handler if the port is manually unbound.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixes: 704577861d ("USB: serial: metro-usb: get data from device in Uni-Directional mode.")
Signed-off-by: Johan Hovold <johan@kernel.org>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

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Johan Hovold 2017-10-12 10:54:21 +02:00 • committed by Ben Hutchings

parent b579022862

commit 8472d5e566

1 changed files with 8 additions and 3 deletions

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drivers/usb/serial/metro-usb.c

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