staging: comedi: drivers: properly validate cmd->scan_end_arg
When the async command 'scan_end_src' is TRIG_COUNT the 'scan_end_arg' is the cmd->chanlist_len. Fix a couple open-coded drivers. Add the check to the drivers that do not validate this command argument. The core validates that the cmd->chanlist_len is <= s->len_chanlist. During the post config after the attach the core also make sure that the s->len_chanlist is initialized. For clarity, initialize the s->len_chanlist in a couple drivers that are relying on the core to initialize it to '1'. 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>
Showing
Please register or sign in to comment