From 3b2468fe9854941a175d57642a05aad6f52289c7 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Tue, 27 Oct 2015 16:59:21 +0000 Subject: [PATCH] staging: comedi: comedi_test: use unsigned short for loopback values The last sample values written to the AO subdevice channels by its "insn_write" handler `waveform_ao_insn_write()` are stored in the member array `ao_loopbacks[]` in the device private data `struct waveform_private`. They can be read back via the "insn_read" handler of the AI subdevice `waveform_ai_insn_read()`. As the stored sample values are only 16 bits wide, change the type of the `ao_loopbacks[]` member to `unsigned short` to save some space. Signed-off-by: Ian Abbott Reviewed-by: H Hartley Sweeten Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/comedi_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/comedi/drivers/comedi_test.c b/drivers/staging/comedi/drivers/comedi_test.c index 9655dc333e34..a750f84529ff 100644 --- a/drivers/staging/comedi/drivers/comedi_test.c +++ b/drivers/staging/comedi/drivers/comedi_test.c @@ -70,7 +70,7 @@ struct waveform_private { unsigned long state_bits; unsigned int ai_scan_period; /* AI scan period in usec */ unsigned int ai_convert_period; /* AI conversion period in usec */ - unsigned int ao_loopbacks[N_CHANS]; + unsigned short ao_loopbacks[N_CHANS]; }; /* fake analog input ranges */ -- 2.20.1