staging: comedi: ni_labpc: pass ai scan mode through various functions
Pass the `enum scan_mode` value calculated by `labpc_ai_scan_mode()` as a parameter to various other functions so they don't have to call it themselves. Amongst others, the affected functions include `labpc_adc_timing()`, `labpc_ai_convert_period()` and `labpc_ai_scan_period()`. `labpc_adc_timing()` calls `labpc_ai_convert_period()` and `labpc_ai_scan_period()` in several places, but the returned values are the same each time, so change it to just call those functions once and re-use the return values. Signed-off-by:Ian Abbott <abbotti@mev.co.uk> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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