[broonie-sound:for-6.1 3/22] sound/soc/codecs/src4xxx.c:288 src4xxx_hw_params() error: uninitialized symbol 'pj'.

From: Dan Carpenter
Date: Wed Aug 17 2022 - 05:49:51 EST

tree: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-6.1
head: 6256547352fa21356de8d26b058e50d719ecc0d2
commit: 4e6bedd3c396014ba70de2b4c9995c8e024e82b3 [3/22] ASoC: codecs: add support for the TI SRC4392 codec
config: arm-randconfig-m031-20220815 (https://download.01.org/0day-ci/archive/20220817/202208170317.bCGqTwpU-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

smatch warnings:
sound/soc/codecs/src4xxx.c:288 src4xxx_hw_params() error: uninitialized symbol 'pj'.
sound/soc/codecs/src4xxx.c:293 src4xxx_hw_params() error: uninitialized symbol 'jd'.
sound/soc/codecs/src4xxx.c:298 src4xxx_hw_params() error: uninitialized symbol 'd'.

vim +/pj +288 sound/soc/codecs/src4xxx.c

4e6bedd3c396014 Matt Flax 2022-08-10 216 static int src4xxx_hw_params(struct snd_pcm_substream *substream,
4e6bedd3c396014 Matt Flax 2022-08-10 217 struct snd_pcm_hw_params *params,
4e6bedd3c396014 Matt Flax 2022-08-10 218 struct snd_soc_dai *dai)
4e6bedd3c396014 Matt Flax 2022-08-10 219 {
4e6bedd3c396014 Matt Flax 2022-08-10 220 struct snd_soc_component *component = dai->component;
4e6bedd3c396014 Matt Flax 2022-08-10 221 struct src4xxx *src4xxx = snd_soc_component_get_drvdata(component);
4e6bedd3c396014 Matt Flax 2022-08-10 222 unsigned int mclk_div;
4e6bedd3c396014 Matt Flax 2022-08-10 223 int val, pj, jd, d;
4e6bedd3c396014 Matt Flax 2022-08-10 224 int reg;
4e6bedd3c396014 Matt Flax 2022-08-10 225 int ret;
4e6bedd3c396014 Matt Flax 2022-08-10 226
4e6bedd3c396014 Matt Flax 2022-08-10 227 switch (dai->id) {
4e6bedd3c396014 Matt Flax 2022-08-10 228 case SRC4XXX_PORTB:
4e6bedd3c396014 Matt Flax 2022-08-10 229 reg = SRC4XXX_PORTB_CTL_06;
4e6bedd3c396014 Matt Flax 2022-08-10 230 break;
4e6bedd3c396014 Matt Flax 2022-08-10 231 default:
4e6bedd3c396014 Matt Flax 2022-08-10 232 reg = SRC4XXX_PORTA_CTL_04;
4e6bedd3c396014 Matt Flax 2022-08-10 233 break;
4e6bedd3c396014 Matt Flax 2022-08-10 234 }
4e6bedd3c396014 Matt Flax 2022-08-10 235
4e6bedd3c396014 Matt Flax 2022-08-10 236 if (src4xxx->master[dai->id]) {
4e6bedd3c396014 Matt Flax 2022-08-10 237 mclk_div = src4xxx->mclk_hz/params_rate(params);
4e6bedd3c396014 Matt Flax 2022-08-10 238 if (src4xxx->mclk_hz != mclk_div*params_rate(params)) {
4e6bedd3c396014 Matt Flax 2022-08-10 239 dev_err(component->dev,
4e6bedd3c396014 Matt Flax 2022-08-10 240 "mclk %d / rate %d has a remainder.\n",
4e6bedd3c396014 Matt Flax 2022-08-10 241 src4xxx->mclk_hz, params_rate(params));
4e6bedd3c396014 Matt Flax 2022-08-10 242 return -EINVAL;
4e6bedd3c396014 Matt Flax 2022-08-10 243 }
4e6bedd3c396014 Matt Flax 2022-08-10 244
4e6bedd3c396014 Matt Flax 2022-08-10 245 val = ((int)mclk_div - 128) / 128;
4e6bedd3c396014 Matt Flax 2022-08-10 246 if ((val < 0) | (val > 3)) {
4e6bedd3c396014 Matt Flax 2022-08-10 247 dev_err(component->dev,
4e6bedd3c396014 Matt Flax 2022-08-10 248 "div register setting %d is out of range\n",
4e6bedd3c396014 Matt Flax 2022-08-10 249 val);
4e6bedd3c396014 Matt Flax 2022-08-10 250 dev_err(component->dev,
4e6bedd3c396014 Matt Flax 2022-08-10 251 "unsupported sample rate %d Hz for the master clock of %d Hz\n",
4e6bedd3c396014 Matt Flax 2022-08-10 252 params_rate(params), src4xxx->mclk_hz);
4e6bedd3c396014 Matt Flax 2022-08-10 253 return -EINVAL;
4e6bedd3c396014 Matt Flax 2022-08-10 254 }
4e6bedd3c396014 Matt Flax 2022-08-10 255
4e6bedd3c396014 Matt Flax 2022-08-10 256 /* set the TX DIV */
4e6bedd3c396014 Matt Flax 2022-08-10 257 ret = regmap_update_bits(src4xxx->regmap,
4e6bedd3c396014 Matt Flax 2022-08-10 258 SRC4XXX_TX_CTL_07, SRC4XXX_TX_MCLK_DIV_MASK,
4e6bedd3c396014 Matt Flax 2022-08-10 259 val<<SRC4XXX_TX_MCLK_DIV_SHIFT);
4e6bedd3c396014 Matt Flax 2022-08-10 260 if (ret) {
4e6bedd3c396014 Matt Flax 2022-08-10 261 dev_err(component->dev,
4e6bedd3c396014 Matt Flax 2022-08-10 262 "Couldn't set the TX's div register to %d << %d = 0x%x\n",
4e6bedd3c396014 Matt Flax 2022-08-10 263 val, SRC4XXX_TX_MCLK_DIV_SHIFT,
4e6bedd3c396014 Matt Flax 2022-08-10 264 val<<SRC4XXX_TX_MCLK_DIV_SHIFT);
4e6bedd3c396014 Matt Flax 2022-08-10 265 return ret;
4e6bedd3c396014 Matt Flax 2022-08-10 266 }
4e6bedd3c396014 Matt Flax 2022-08-10 267
4e6bedd3c396014 Matt Flax 2022-08-10 268 /* set the PLL for the digital receiver */
4e6bedd3c396014 Matt Flax 2022-08-10 269 switch (src4xxx->mclk_hz) {
4e6bedd3c396014 Matt Flax 2022-08-10 270 case 24576000:
4e6bedd3c396014 Matt Flax 2022-08-10 271 pj = 0x22;
4e6bedd3c396014 Matt Flax 2022-08-10 272 jd = 0x00;
4e6bedd3c396014 Matt Flax 2022-08-10 273 d = 0x00;
4e6bedd3c396014 Matt Flax 2022-08-10 274 break;
4e6bedd3c396014 Matt Flax 2022-08-10 275 case 22579200:
4e6bedd3c396014 Matt Flax 2022-08-10 276 pj = 0x22;
4e6bedd3c396014 Matt Flax 2022-08-10 277 jd = 0x1b;
4e6bedd3c396014 Matt Flax 2022-08-10 278 d = 0xa3;
4e6bedd3c396014 Matt Flax 2022-08-10 279 break;
4e6bedd3c396014 Matt Flax 2022-08-10 280 default:
4e6bedd3c396014 Matt Flax 2022-08-10 281 /* don't error out here,
4e6bedd3c396014 Matt Flax 2022-08-10 282 * other parts of the chip are still functional
4e6bedd3c396014 Matt Flax 2022-08-10 283 */
4e6bedd3c396014 Matt Flax 2022-08-10 284 dev_info(component->dev,
4e6bedd3c396014 Matt Flax 2022-08-10 285 "Couldn't set the RCV PLL as this master clock rate is unknown\n");
4e6bedd3c396014 Matt Flax 2022-08-10 286 break;

Not initialized on this path.

4e6bedd3c396014 Matt Flax 2022-08-10 287 }
4e6bedd3c396014 Matt Flax 2022-08-10 @288 ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_0F, pj);
4e6bedd3c396014 Matt Flax 2022-08-10 289 if (ret < 0)
4e6bedd3c396014 Matt Flax 2022-08-10 290 dev_err(component->dev,
4e6bedd3c396014 Matt Flax 2022-08-10 291 "Failed to update PLL register 0x%x\n",
4e6bedd3c396014 Matt Flax 2022-08-10 292 SRC4XXX_RCV_PLL_0F);
4e6bedd3c396014 Matt Flax 2022-08-10 @293 ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_10, jd);
4e6bedd3c396014 Matt Flax 2022-08-10 294 if (ret < 0)
4e6bedd3c396014 Matt Flax 2022-08-10 295 dev_err(component->dev,
4e6bedd3c396014 Matt Flax 2022-08-10 296 "Failed to update PLL register 0x%x\n",
4e6bedd3c396014 Matt Flax 2022-08-10 297 SRC4XXX_RCV_PLL_10);
4e6bedd3c396014 Matt Flax 2022-08-10 @298 ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_11, d);
4e6bedd3c396014 Matt Flax 2022-08-10 299 if (ret < 0)
4e6bedd3c396014 Matt Flax 2022-08-10 300 dev_err(component->dev,
4e6bedd3c396014 Matt Flax 2022-08-10 301 "Failed to update PLL register 0x%x\n",
4e6bedd3c396014 Matt Flax 2022-08-10 302 SRC4XXX_RCV_PLL_11);
4e6bedd3c396014 Matt Flax 2022-08-10 303
4e6bedd3c396014 Matt Flax 2022-08-10 304 ret = regmap_update_bits(src4xxx->regmap,
4e6bedd3c396014 Matt Flax 2022-08-10 305 SRC4XXX_TX_CTL_07, SRC4XXX_TX_MCLK_DIV_MASK,
4e6bedd3c396014 Matt Flax 2022-08-10 306 val<<SRC4XXX_TX_MCLK_DIV_SHIFT);
4e6bedd3c396014 Matt Flax 2022-08-10 307 if (ret < 0) {
4e6bedd3c396014 Matt Flax 2022-08-10 308 dev_err(component->dev,
4e6bedd3c396014 Matt Flax 2022-08-10 309 "Couldn't set the TX's div register to %d << %d = 0x%x\n",
4e6bedd3c396014 Matt Flax 2022-08-10 310 val, SRC4XXX_TX_MCLK_DIV_SHIFT,
4e6bedd3c396014 Matt Flax 2022-08-10 311 val<<SRC4XXX_TX_MCLK_DIV_SHIFT);
4e6bedd3c396014 Matt Flax 2022-08-10 312 return ret;
4e6bedd3c396014 Matt Flax 2022-08-10 313 }
4e6bedd3c396014 Matt Flax 2022-08-10 314
4e6bedd3c396014 Matt Flax 2022-08-10 315 return regmap_update_bits(src4xxx->regmap, reg,
4e6bedd3c396014 Matt Flax 2022-08-10 316 SRC4XXX_MCLK_DIV_MASK, val);
4e6bedd3c396014 Matt Flax 2022-08-10 317 } else {
4e6bedd3c396014 Matt Flax 2022-08-10 318 dev_info(dai->dev, "not setting up MCLK as not master\n");
4e6bedd3c396014 Matt Flax 2022-08-10 319 }
4e6bedd3c396014 Matt Flax 2022-08-10 320
4e6bedd3c396014 Matt Flax 2022-08-10 321 return 0;
4e6bedd3c396014 Matt Flax 2022-08-10 322 };

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