ASoC : cs4265 : readable register too low

[ Upstream commit f3df05c805983427319eddc2411a2105ee1757cf ]

The cs4265_readable_register function stopped short of the maximum
register.

An example bug is taken from :
https://github.com/Audio-Injector/Ultra/issues/25

Where alsactl store fails with :
Cannot read control '2,0,0,C Data Buffer,0': Input/output error

This patch fixes the bug by setting the cs4265 to have readable
registers up to the maximum hardware register CS4265_MAX_REGISTER.

Signed-off-by: Matt Flax <flatmax@flatmax.org>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/codecs/cs4265.c b/sound/soc/codecs/cs4265.c
index ab27d2b94d02db70e137946b0cd4bd8953ab46cc..c0190ec59e7492e57d98cd2bf7d6e592a383cb94 100644 (file)
--- a/sound/soc/codecs/cs4265.c
+++ b/sound/soc/codecs/cs4265.c
@@ -60,7 +60,7 @@ static const struct reg_default cs4265_reg_defaults[] = {
 static bool cs4265_readable_register(struct device *dev, unsigned int reg)
 {
        switch (reg) {
-       case CS4265_CHIP_ID ... CS4265_SPDIF_CTL2:
+       case CS4265_CHIP_ID ... CS4265_MAX_REGISTER:
                return true;
        default:
                return false;