Commit eabbf3f4 authored by Ian Abbott's avatar Ian Abbott Committed by Greg Kroah-Hartman
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staging: comedi: das16m1: sample types are unsigned 



Sample values in comedi are generally represented as unsigned values.
Change the element type of the `ai_buffer[]` member of `struct
das16m1_private_struct` and the types used by `munge_sample()` and
`munge_sample_array()` from `short` to `unsigned short` for consistency.

Signed-off-by: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 92098345

drivers/staging/comedi/drivers/das16m1.c

+3 −3
Original line number Diff line number Diff line
@@ -131,18 +131,18 @@ struct das16m1_private_struct { 
	 * needed to keep track of whether new count has been loaded into

	 * counter yet (loaded by first sample conversion) */

	u16 initial_hw_count;

	short ai_buffer[FIFO_SIZE];

	unsigned short ai_buffer[FIFO_SIZE];

	unsigned int divisor1;	/*  divides master clock to obtain conversion speed */

	unsigned int divisor2;	/*  divides master clock to obtain conversion speed */

	unsigned long extra_iobase;

};



static inline short munge_sample(short data)

static inline unsigned short munge_sample(unsigned short data)

{

	return (data >> 4) & 0xfff;

}



static void munge_sample_array(short *array, unsigned int num_elements)

static void munge_sample_array(unsigned short *array, unsigned int num_elements)

{

	unsigned int i;