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Linus Walleij
53dabafe1b
Currently if generic_buffer is invoked without first enabling any channels in scan_elements/*_en, it will fail unable to enable the buffer because bytes_per_datum inside the kernel will be zero if no channels are available. It is implied that the user of the program should enable channels manually or with a script before executing generic_buffer. Be more helpful by stopping execution if no enabled channels can be found, and print a helptext that will tell you what is wrong and what needs to be done. Signed-off-by: Linus Walleij <[email protected]> Acked-by: Hartmut Knaack <[email protected]> Signed-off-by: Jonathan Cameron <[email protected]>