H Hartley Sweeten 023bea7452 staging: comedi: das1800: fix possible NULL dereference ...

commit d375278d66 upstream.

DMA is optional with this driver. If it was not enabled the devpriv->dma
pointer will be NULL.

Fix the possible NULL pointer dereference when trying to disable the DMA
channels in das1800_ai_cancel() and tidy up the comments to fix the
checkpatch.pl issues:
WARNING: line over 80 characters

It's probably harmless in das1800_ai_setup_dma() because the 'desc' pointer
will not be used if DMA is disabled but fix it there also.

Fixes: 99dfc3357e ("staging: comedi: das1800: remove depends on ISA_DMA_API limitation")
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>

2016-06-01 12:15:52 -07:00

..

drivers

staging: comedi: das1800: fix possible NULL dereference

2016-06-01 12:15:52 -07:00

kcomedilib

staging: comedi: kcomedilib: Fixed coding style issue

2015-09-12 18:24:38 -07:00

comedi_buf.c

staging: comedi: add new comedi_buf_write_n_available()

2015-10-13 10:28:40 -07:00

comedi_compat32.c

staging: comedi: fix cast warning in comedi_compat32.c

2015-07-14 18:21:15 -07:00

comedi_compat32.h

staging: comedi: comedi_compat32.h: reformat copyright comment

2015-01-28 11:19:34 -08:00

comedi_fops.c

staging: comedi: check for more errors for zero-length read

2015-10-13 10:29:48 -07:00

comedi_internal.h

staging: comedi: add new comedi_buf_write_n_available()

2015-10-13 10:28:40 -07:00

comedi_pci.c

staging: comedi: comedi_pci.c: Fix kernel-doc Return tags

2015-10-02 11:43:21 +02:00

comedi_pci.h

staging: comedi: comedi_pci.h: move PCI stuff out of comedidev.h

2015-03-20 14:08:18 +01:00

comedi_pcmcia.c

staging: comedi: comedi_pcmcia.c: improve function documentation

2015-10-02 11:43:21 +02:00

comedi_pcmcia.h

staging: comedi: comedi_pcmcia.h: move PCMCIA stuff out of comedidev.h

2015-02-07 17:05:51 +08:00

comedi_usb.c

staging: comedi: comedi_usb.c: improve function documentation

2015-10-02 11:43:21 +02:00

comedi_usb.h

staging: comedi: comedi_usb.h: move USB stuff out of comedidev.h

2015-01-28 11:18:51 -08:00

comedi.h

Drivers: staging: comedi: comedi: Fixed comment spelling error

2015-05-24 13:11:44 -07:00

comedidev.h

staging: comedi: comedidev.h: spaces preferred around that '*'

2015-10-13 10:30:39 -07:00

comedilib.h

staging: comedi: comedi_bond: handle base channel for insn_bits

2013-08-26 06:41:56 -07:00

drivers.c

staging: comedi: fix extreme case of comedi_nsamples_left()

2015-10-27 14:31:25 +09:00

Kconfig

staging: comedi: aio_aio12_8: hookup 8254 counter/timer

2015-10-13 10:26:06 -07:00

Makefile

staging: comedi: split out PCI support into new module

2014-11-07 09:24:33 -08:00

proc.c

Staging: comedi: proc: title block update

2014-03-19 04:41:04 +00:00

range.c

staging: comedi: improve comedi_check_chanlist() documentation

2015-08-05 11:55:44 -07:00

TODO

staging: comedi: TODO: remove item "reserve major number"

2014-05-28 14:18:11 -07:00