[RFC] Input: wm97xx-core - Remove save state from wm97xx_read_aux_adc()

[Eric Millbrandt <emillbrandt@dekaresearch.com>]

Saving the state of the digitizers seems unnecessary since the next
sample will rewrite those registers.  It also causes an unnecessary
sample to occur if the previous state was a sample.  This will cause
the wrong sample to be returned on the next call to wm97xx_read_aux_adc().
---
 drivers/input/touchscreen/wm97xx-core.c |    5 -----
 1 files changed, 0 insertions(+), 5 deletions(-)

diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c
index cbfef1e..b4bcb2c 100644
--- a/drivers/input/touchscreen/wm97xx-core.c
+++ b/drivers/input/touchscreen/wm97xx-core.c
@@ -138,9 +138,6 @@ int wm97xx_read_aux_adc(struct wm97xx *wm, u16 adcsel)
                wm97xx_reg_write(wm, AC97_EXTENDED_MID, power & 0x7fff);
        }

-       /* Prepare the codec for AUX reading */
-       wm->codec->aux_prepare(wm);
-
        /* Turn polling mode on to read AUX ADC */
        wm->pen_probably_down = 1;
        wm->codec->poll_sample(wm, adcsel, &auxval);
@@ -148,8 +145,6 @@ int wm97xx_read_aux_adc(struct wm97xx *wm, u16 adcsel)
        if (power_adc)
                wm97xx_reg_write(wm, AC97_EXTENDED_MID, power | 0x8000);

-       wm->codec->dig_restore(wm);
-
        wm->pen_probably_down = 0;

        mutex_unlock(&wm->codec_mutex);
--
1.6.3.1

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