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.
Cc: Teresa Gámez <t.gamez@xxxxxxxxx>
Cc: Christian Hemp <c.hemp@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Markus Pargmann <mpa@xxxxxxxxxxxxxx>
---
drivers/input/touchscreen/wm9712.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/touchscreen/wm9712.c b/drivers/input/touchscreen/wm9712.c
index 6e743e3..a983da1 100644
--- a/drivers/input/touchscreen/wm9712.c
+++ b/drivers/input/touchscreen/wm9712.c
@@ -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)) {
--
1.8.1.4
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