ASoC: mediatek: mt8186: set the correct string to strncmp()

Fix Smatch static checker warning. strncmp() here only needs to compare
the first seven bytes, so in order to make the code more clear, only the
first seven bytes of the string used as the comparison are reserved.

Bug report: https://www.spinics.net/lists/alsa-devel/msg145608.html

sound/soc/mediatek/mt8186/mt8186-dai-adda.c:78 get_adda_priv_by_name()
warn: strncmp() with weird length: 17 vs 7

sound/soc/mediatek/mt8186/mt8186-dai-adda.c
    72 static struct mtk_afe_adda_priv *get_adda_priv_by_name(struct mtk_base_afe *afe,
    73                                                        const char *name)
    74 {
    75         struct mt8186_afe_private *afe_priv = afe->platform_priv;
    76         int dai_id;
    77
--> 78         if (strncmp(name, "aud_dac_hires_clk", 7) == 0 ||
    79             strncmp(name, "aud_adc_hires_clk", 7) == 0)

Fixes: fa868457a9ab ("ASoC: mediatek: mt8186: support adda in platform driver")
Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com>
Link: https://lore.kernel.org/r/20220726153130.27584-1-jiaxin.yu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/mediatek/mt8186/mt8186-dai-adda.c b/sound/soc/mediatek/mt8186/mt8186-dai-adda.c
index 6be6d4f3b585069905d70f0c5b55590bacebf553..c226d3dace3174eaf3428700204e28d87ef7bff6 100644 (file)
--- a/sound/soc/mediatek/mt8186/mt8186-dai-adda.c
+++ b/sound/soc/mediatek/mt8186/mt8186-dai-adda.c
@@ -75,8 +75,7 @@ static struct mtk_afe_adda_priv *get_adda_priv_by_name(struct mtk_base_afe *afe,
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        int dai_id;
 
-       if (strncmp(name, "aud_dac_hires_clk", 7) == 0 ||
-           strncmp(name, "aud_adc_hires_clk", 7) == 0)
+       if (strncmp(name, "aud_dac", 7) == 0 || strncmp(name, "aud_adc", 7) == 0)
                dai_id = MT8186_DAI_ADDA;
        else
                return NULL;