[PATCH v3 15/24] staging: comedi: quatech_daqp_cs: document the 16-bit registers

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All the registers are 8-bit except for the analog output and timer
registers. For clarity, add some comments.

Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/staging/comedi/drivers/quatech_daqp_cs.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/comedi/drivers/quatech_daqp_cs.c b/drivers/staging/comedi/drivers/quatech_daqp_cs.c
index b7a20f7..c575104 100644
--- a/drivers/staging/comedi/drivers/quatech_daqp_cs.c
+++ b/drivers/staging/comedi/drivers/quatech_daqp_cs.c
@@ -111,8 +111,10 @@
 #define DAQP_CMD_SCANRATE_25KHZ		DAQP_CMD_SCANRATE(2)
 #define DAQP_CMD_FIFO_DATA		BIT(0)
 
-#define DAQP_AO_REG			0x08
-#define DAQP_TIMER_REG			0x0a
+#define DAQP_AO_REG			0x08	/* and 0x09 (16-bit) */
+
+#define DAQP_TIMER_REG			0x0a	/* and 0x0b (16-bit) */
+
 #define DAQP_AUX_REG			0x0f
 
 #define DAQP_AUX_TRIGGER_TTL		0x00
-- 
2.5.1

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