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Input: wm9712 - fix return code for wrong sample 

Instead of interpreting a wrong measurement as pen up, we should
try to read again.

Based on wm9712: pen up by Teresa Gámez and Christian Hemp.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
hifive-unleashed-5.1
Markus Pargmann 2013-03-09 15:20:50 -08:00 committed by Dmitry Torokhov
parent cfd5d09691
commit fa45255ee7
1 changed files with 1 additions and 1 deletions
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2
drivers/input/touchscreen/wm9712.c
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@ -298,7 +298,7 @@ static int wm9712_poll_sample(struct wm97xx *wm, int adcsel, int *sample)
dev_dbg(wm->dev, "adc wrong sample, wanted %x got %x",
adcsel & WM97XX_ADCSEL_MASK,
*sample & WM97XX_ADCSEL_MASK);
return RC_PENUP;
return RC_AGAIN;
}
if (wants_pen && !(*sample & WM97XX_PEN_DOWN)) {