From: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Date: Thu, 25 Jun 2015 08:35:12 +0000 (+0100)
Subject: ASoC: arizona: Implement stability check for LHPF coefficients
X-Git-Tag: omap-for-v4.3/fixes-rc1~91^2~7^2~19^5~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f8e671a49e1d608fcf52c8944ea7818cd4c99a9;p=pandora-kernel.git

ASoC: arizona: Implement stability check for LHPF coefficients

Specifying unstable coefficients for the low/high pass filters can have
a severe impact on the audio. This patchs adds a stability check on the
coefficients written to the low/high pass filter block to prevent this.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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