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asedeno.scripts.mit.edu Git - linux.git/commit
staging: comedi: s626: clarify the cmd->start_arg validation and use
This driver supports a cmd->start_src of TRIG_NOW, TRIG_INT or TRIG_EXT.
Clarify the cmd->start_arg validation in Step 3 of the (*do_cmdtest).
For a TRIG_INT source, the cmd->start_arg is actually the valid
trig_num that is used by the async (*inttrig) callback.
Refactor the (*inttrig) function so that the cmd->start_arg is used
to check the trig_num instead of the open coded value.
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>