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(parent: 72639a1) | patch
staging: comedi: ni_mio_common: fix interrupt handler for dev->write_subdev
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Thu, 21 Apr 2016 19:04:39 +0000 (12:04 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Apr 2016 05:19:49 +0000 (22:19 -0700)
commit7ef1745f29d12b31361d0cf3a2bc259a396aac10
tree3bf62706a0017d5d86b890dcf050f45d4bf5837dtree | snapshot
parent72639a16704b10cf5fffaa52715929dc8f081528commit | diff
staging: comedi: ni_mio_common: fix interrupt handler for dev->write_subdev

There may not be a dev->write_subdev, i.e. an analog output subdevice, that
supports async commands. If it doesn't exist the interrupt/dma will never
be enabled.  Fix ni_E_interrupt() so that the analog output subdevice is
only handled if it exists.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/comedi/drivers/ni_mio_common.c diff | blob | history
Domain: System / Kernel;