tree: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git topic/cs43130 head: 465c925695593b43695e2396f7279879a72275eb commit: 8f1e5bf9b4408e91942b94c76583eaf098f19382 [1/2] ASoC: cs43130: Add support for CS43130 codec config: i386-allmodconfig (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: git checkout 8f1e5bf9b4408e91942b94c76583eaf098f19382 # save the attached .config to linux build tree make ARCH=i386

Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings

All warnings (new ones prefixed by >>):

sound/soc/codecs/cs43130.c: In function 'cs43130_imp_meas':

...

sound/soc/codecs/cs43130.c:2089:18: warning: 'hpload_seq' may be used uninitialized in this function [-Wmaybe-uninitialized]

hpload_seq[i].msk, ac_idx); ^

vim +/hpload_seq +2089 sound/soc/codecs/cs43130.c

2042 2043 static void cs43130_imp_meas(struct work_struct *wk) 2044 { 2045 unsigned int reg, seq_size; 2046 int i, ret, ac_idx; 2047 struct cs43130_private *cs43130; 2048 struct snd_soc_codec *codec; 2049 struct reg_sequences *hpload_seq; 2050 2051 cs43130 = container_of(wk, struct cs43130_private, work); 2052 codec = cs43130->codec; 2053 2054 if (!cs43130->mclk) 2055 return; 2056 2057 cs43130->hpload_done = false; 2058 2059 mutex_lock(&cs43130->clk_mutex); 2060 if (!cs43130->clk_req) { 2061 /* clk not in use */ 2062 cs43130_set_pll(codec, 0, 0, cs43130->mclk, CS43130_MCLK_22M); 2063 if (cs43130->pll_bypass) 2064 cs43130_change_clksrc(codec, CS43130_MCLK_SRC_EXT); 2065 else 2066 cs43130_change_clksrc(codec, CS43130_MCLK_SRC_PLL); 2067 } 2068 2069 cs43130->clk_req++; 2070 mutex_unlock(&cs43130->clk_mutex); 2071 2072 regmap_read(cs43130->regmap, CS43130_INT_STATUS_4, &reg); 2073 2074 switch (cs43130->dev_id) { 2075 case CS43130_CHIP_ID: 2076 hpload_seq = hpload_seq1; 2077 seq_size = ARRAY_SIZE(hpload_seq1); 2078 break; 2079 case CS43131_CHIP_ID: 2080 hpload_seq = hpload_seq2; 2081 seq_size = ARRAY_SIZE(hpload_seq2); 2082 } 2083 2084 i = 0; 2085 ac_idx = 0; 2086 while (i < seq_size) { 2087 ret = cs43130_hpload_proc(cs43130, hpload_seq[i].seq, 2088 hpload_seq[i].size,

2089 hpload_seq[i].msk, ac_idx);

2090 if (ret < 0) 2091 goto exit; 2092 2093 cs43130_update_hpload(hpload_seq[i].msk, ac_idx, cs43130); 2094 2095 if (cs43130->ac_meas && 2096 hpload_seq[i].msk == CS43130_HPLOAD_AC_INT && 2097 ac_idx < CS43130_AC_FREQ - 1) { 2098 ac_idx++; 2099 } else { 2100 ac_idx = 0; 2101 i++; 2102 } 2103 } 2104 cs43130->hpload_done = true; 2105 2106 if (cs43130->hpload_dc[HP_LEFT] >= CS43130_LINEOUT_LOAD) 2107 snd_soc_jack_report(&cs43130->jack, CS43130_JACK_LINEOUT, 2108 CS43130_JACK_MASK); 2109 else 2110 snd_soc_jack_report(&cs43130->jack, CS43130_JACK_HEADPHONE, 2111 CS43130_JACK_MASK); 2112 2113 dev_dbg(codec->dev, "Set HP output control. DC threshold\n"); 2114 for (i = 0; i < CS43130_DC_THRESHOLD; i++) 2115 dev_dbg(codec->dev, "DC threshold[%d]: %u.\n", i, 2116 cs43130->dc_threshold[i]); 2117 2118 cs43130_set_hv(cs43130->regmap, cs43130->hpload_dc[HP_LEFT], 2119 cs43130->dc_threshold); 2120 2121 exit: 2122 switch (cs43130->dev_id) { 2123 case CS43130_CHIP_ID: 2124 cs43130_hpload_proc(cs43130, hp_dis_cal_seq, 2125 ARRAY_SIZE(hp_dis_cal_seq), 2126 CS43130_HPLOAD_OFF_INT, ac_idx); 2127 break; 2128 case CS43131_CHIP_ID: 2129 cs43130_hpload_proc(cs43130, hp_dis_cal_seq2, 2130 ARRAY_SIZE(hp_dis_cal_seq2), 2131 CS43130_HPLOAD_OFF_INT, ac_idx); 2132 } 2133 2134 regmap_multi_reg_write(cs43130->regmap, hp_cln_seq, 2135 ARRAY_SIZE(hp_cln_seq)); 2136 2137 mutex_lock(&cs43130->clk_mutex); 2138 cs43130->clk_req--; 2139 /* clk not in use */ 2140 if (!cs43130->clk_req) 2141 cs43130_change_clksrc(codec, CS43130_MCLK_SRC_RCO); 2142 mutex_unlock(&cs43130->clk_mutex); 2143 } 2144

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