staging: comedi: quatech_daqp_cs: fix possible memory dereference issue

Browse source

In daqp_attach(), the first options value passed in the comedi_devconfig
is used as an index to the private dev_table[] in this driver. This table
is used to pass the pcmcia_device to the comedi_driver.

Fix the code so that the index is checked before the table is accessed
so that we don't get a possible memory dereference BUG.

Change the error returned to the comedi core from -EIO to -ENODEV.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

H Hartley Sweeten 2013-01-25 15:02:06 -07:00 • committed by Greg Kroah-Hartman

parent e23fe9a1bf

commit c65c64d0f0

1 changed files with 8 additions and 7 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

15

drivers/staging/comedi/drivers/quatech_daqp_cs.c

View file