From: Eric Millbrandt <emillbrandt@dekaresearch.com>
Date: Fri, 3 Sep 2010 17:31:05 +0000 (-0700)
Subject: Input: wm97xx-core - add retries to wm97xx_read_aux_adc
X-Git-Tag: v2.6.37-rc1~135^2^2~57
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eb54ddd4d78e62647b7096e4ada7389dbdf2cea7;p=pandora-kernel.git

Input: wm97xx-core - add retries to wm97xx_read_aux_adc

Add logic to wm97xx_read_aux_adc() to retry reading the adc if the
sample failed.  This could occur if the previous sample was still in
the return register or the sample timed-out.  Also avoid a pathologic
failure mode by disabling the digitizer and returning -EBUSY after 5
retries.

Signed-off-by: Eric Millbrandt <emillbrandt@dekaresearch.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
---

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