[linux-next:master 4017/6533] drivers/iio/adc/ingenic-adc.c:657 ingenic_adc_read_chan_info_raw() error: uninitialized symbol 'cmd'.

[linux-next:master 4017/6533] drivers/iio/adc/ingenic-adc.c:657 ingenic_adc_read_chan_info_raw() error: uninitialized symbol 'cmd'.

[kernel test robot]

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CC: kbuild-all(a)lists.01.org
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: Christophe Branchereau <cbranchereau@gmail.com>
CC: Jonathan Cameron <Jonathan.Cameron@huawei.com>
CC: Paul Cercueil <paul@crapouillou.net>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   92d00774360dfd4151f15ab9905c643347b9f242
commit: b9e9bdd425a3c99e15f5dfd465bef936130b7491 [4017/6533] iio/adc: ingenic: add JZ4760 support to the sadc driver
:::::: branch date: 15 hours ago
:::::: commit date: 10 days ago
config: openrisc-randconfig-m031-20210811 (attached as .config)
compiler: or1k-linux-gcc (GCC) 10.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

smatch warnings:
drivers/iio/adc/ingenic-adc.c:657 ingenic_adc_read_chan_info_raw() error: uninitialized symbol 'cmd'.

vim +/cmd +657 drivers/iio/adc/ingenic-adc.c

1a78daea107ddb Artur Rojek            2019-02-04  627  
1a99dc467943c0 Artur Rojek            2020-07-19  628  static int ingenic_adc_read_chan_info_raw(struct iio_dev *iio_dev,
1a78daea107ddb Artur Rojek            2019-02-04  629  					  struct iio_chan_spec const *chan,
a515d648850546 Artur Rojek            2019-07-27  630  					  int *val)
1a78daea107ddb Artur Rojek            2019-02-04  631  {
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  632  	int cmd, ret, engine = (chan->channel == INGENIC_ADC_BATTERY);
1a99dc467943c0 Artur Rojek            2020-07-19  633  	struct ingenic_adc *adc = iio_priv(iio_dev);
1a99dc467943c0 Artur Rojek            2020-07-19  634  
1a99dc467943c0 Artur Rojek            2020-07-19  635  	ret = clk_enable(adc->clk);
1a99dc467943c0 Artur Rojek            2020-07-19  636  	if (ret) {
1a99dc467943c0 Artur Rojek            2020-07-19  637  		dev_err(iio_dev->dev.parent, "Failed to enable clock: %d\n",
1a99dc467943c0 Artur Rojek            2020-07-19  638  			ret);
1a99dc467943c0 Artur Rojek            2020-07-19  639  		return ret;
1a99dc467943c0 Artur Rojek            2020-07-19  640  	}
1a78daea107ddb Artur Rojek            2019-02-04  641  
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  642  	/* We cannot sample the aux channels in parallel. */
a515d648850546 Artur Rojek            2019-07-27  643  	mutex_lock(&adc->aux_lock);
9c5eb724f96f8d Christophe Branchereau 2021-07-26  644  	if (adc->soc_data->has_aux_md && engine == 0) {
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  645  		switch (chan->channel) {
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  646  		case INGENIC_ADC_AUX0:
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  647  			cmd = 0;
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  648  			break;
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  649  		case INGENIC_ADC_AUX:
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  650  			cmd = 1;
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  651  			break;
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  652  		case INGENIC_ADC_AUX2:
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  653  			cmd = 2;
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  654  			break;
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  655  		}
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  656  
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26 @657  		ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_AUX_MD, cmd);
1a78daea107ddb Artur Rojek            2019-02-04  658  	}
1a78daea107ddb Artur Rojek            2019-02-04  659  
a515d648850546 Artur Rojek            2019-07-27  660  	ret = ingenic_adc_capture(adc, engine);
a515d648850546 Artur Rojek            2019-07-27  661  	if (ret)
a515d648850546 Artur Rojek            2019-07-27  662  		goto out;
a515d648850546 Artur Rojek            2019-07-27  663  
1a78daea107ddb Artur Rojek            2019-02-04  664  	switch (chan->channel) {
b9e9bdd425a3c9 Christophe Branchereau 2021-07-26  665  	case INGENIC_ADC_AUX0:
1a78daea107ddb Artur Rojek            2019-02-04  666  	case INGENIC_ADC_AUX:
a515d648850546 Artur Rojek            2019-07-27  667  	case INGENIC_ADC_AUX2:
1a78daea107ddb Artur Rojek            2019-02-04  668  		*val = readw(adc->base + JZ_ADC_REG_ADSDAT);
1a78daea107ddb Artur Rojek            2019-02-04  669  		break;
1a78daea107ddb Artur Rojek            2019-02-04  670  	case INGENIC_ADC_BATTERY:
1a78daea107ddb Artur Rojek            2019-02-04  671  		*val = readw(adc->base + JZ_ADC_REG_ADBDAT);
1a78daea107ddb Artur Rojek            2019-02-04  672  		break;
1a78daea107ddb Artur Rojek            2019-02-04  673  	}
1a78daea107ddb Artur Rojek            2019-02-04  674  
a515d648850546 Artur Rojek            2019-07-27  675  	ret = IIO_VAL_INT;
a515d648850546 Artur Rojek            2019-07-27  676  out:
a515d648850546 Artur Rojek            2019-07-27  677  	mutex_unlock(&adc->aux_lock);
1a99dc467943c0 Artur Rojek            2020-07-19  678  	clk_disable(adc->clk);
1a78daea107ddb Artur Rojek            2019-02-04  679  
a515d648850546 Artur Rojek            2019-07-27  680  	return ret;
a515d648850546 Artur Rojek            2019-07-27  681  }
a515d648850546 Artur Rojek            2019-07-27  682  

---
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