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/openbmc/linux/sound/soc/codecs/ |
H A D | wm8960.c | 66772eda Wed Apr 26 08:09:51 CDT 2017 Daniel Baluta <daniel.baluta@nxp.com> ASoC: codec: wm9860: avoid maybe-uninitialized warning
The new PLL configuration code triggers a harmless warning:
sound/soc/codecs/wm8960.c: In function 'wm8960_configure_clocking': sound/soc/codecs/wm8960.c:735:3: error: 'best_freq_out' may be used uninitialized in this function [-Werror=maybe-uninitialized] wm8960_set_pll(codec, freq_in, best_freq_out); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ sound/soc/codecs/wm8960.c:699:12: note: 'best_freq_out' was declared here
Fix this by reworking the code such that:
1) When there is no PLL freq available return -EINVAL and make sure *bclk_idx, *dac_idx, *sysclk_idx are initialized with invalid values.
2) When there is a PLL freq available initialize *bclk_idx, *dac_idx and *sysclk_idx with correct values and immediately return the freq available.
Fixes: 84fdc00d519f ("ASoC: codec: wm9860: Refactor PLL out freq search") Fixes: 303e8954af8d ("ASoC: codec: wm8960: Stop when a matching PLL freq is found") Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mark Brown <broonie@kernel.org> 66772eda Wed Apr 26 08:09:51 CDT 2017 Daniel Baluta <daniel.baluta@nxp.com> ASoC: codec: wm9860: avoid maybe-uninitialized warning The new PLL configuration code triggers a harmless warning: sound/soc/codecs/wm8960.c: In function 'wm8960_configure_clocking': sound/soc/codecs/wm8960.c:735:3: error: 'best_freq_out' may be used uninitialized in this function [-Werror=maybe-uninitialized] wm8960_set_pll(codec, freq_in, best_freq_out); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ sound/soc/codecs/wm8960.c:699:12: note: 'best_freq_out' was declared here Fix this by reworking the code such that: 1) When there is no PLL freq available return -EINVAL and make sure *bclk_idx, *dac_idx, *sysclk_idx are initialized with invalid values. 2) When there is a PLL freq available initialize *bclk_idx, *dac_idx and *sysclk_idx with correct values and immediately return the freq available. Fixes: 84fdc00d519f ("ASoC: codec: wm9860: Refactor PLL out freq search") Fixes: 303e8954af8d ("ASoC: codec: wm8960: Stop when a matching PLL freq is found") Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mark Brown <broonie@kernel.org>
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