Re: [PATCH v1] i2c: i2c-stm32f7: add PM Runtime support

From: kbuild test robot
Date: Sun Nov 18 2018 - 11:34:34 EST

Hi Pierre-Yves,

I love your patch! Yet something to improve:

[auto build test ERROR on wsa/i2c/for-next]
[also build test ERROR on v4.20-rc2 next-20181116]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Pierre-Yves-MORDRET/i2c-i2c-stm32f7-add-PM-Runtime-support/20181118-230534
base: https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 8.1.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=8.1.0 make.cross ARCH=xtensa

All errors (new ones prefixed by >>):

drivers/i2c/busses/i2c-stm32f7.c: In function 'stm32f7_i2c_probe':
>> drivers/i2c/busses/i2c-stm32f7.c:1913:7: error: 'STM32F7_AUTOSUSPEND_DELAY' undeclared (first use in this function); did you mean 'RPM_REQ_AUTOSUSPEND'?
STM32F7_AUTOSUSPEND_DELAY);
^~~~~~~~~~~~~~~~~~~~~~~~~
RPM_REQ_AUTOSUSPEND
drivers/i2c/busses/i2c-stm32f7.c:1913:7: note: each undeclared identifier is reported only once for each function it appears in

vim +1913 drivers/i2c/busses/i2c-stm32f7.c

1782
1783 static int stm32f7_i2c_probe(struct platform_device *pdev)
1784 {
1785 struct device_node *np = pdev->dev.of_node;
1786 struct stm32f7_i2c_dev *i2c_dev;
1787 const struct stm32f7_i2c_setup *setup;
1788 struct resource *res;
1789 u32 irq_error, irq_event, clk_rate, rise_time, fall_time;
1790 struct i2c_adapter *adap;
1791 struct reset_control *rst;
1792 dma_addr_t phy_addr;
1793 int ret;
1794
1795 i2c_dev = devm_kzalloc(&pdev->dev, sizeof(*i2c_dev), GFP_KERNEL);
1796 if (!i2c_dev)
1797 return -ENOMEM;
1798
1799 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1800 i2c_dev->base = devm_ioremap_resource(&pdev->dev, res);
1801 if (IS_ERR(i2c_dev->base))
1802 return PTR_ERR(i2c_dev->base);
1803 phy_addr = (dma_addr_t)res->start;
1804
1805 irq_event = irq_of_parse_and_map(np, 0);
1806 if (!irq_event) {
1807 dev_err(&pdev->dev, "IRQ event missing or invalid\n");
1808 return -EINVAL;
1809 }
1810
1811 irq_error = irq_of_parse_and_map(np, 1);
1812 if (!irq_error) {
1813 dev_err(&pdev->dev, "IRQ error missing or invalid\n");
1814 return -EINVAL;
1815 }
1816
1817 i2c_dev->clk = devm_clk_get(&pdev->dev, NULL);
1818 if (IS_ERR(i2c_dev->clk)) {
1819 dev_err(&pdev->dev, "Error: Missing controller clock\n");
1820 return PTR_ERR(i2c_dev->clk);
1821 }
1822
1823 ret = clk_prepare_enable(i2c_dev->clk);
1824 if (ret) {
1825 dev_err(&pdev->dev, "Failed to prepare_enable clock\n");
1826 return ret;
1827 }
1828
1829 i2c_dev->speed = STM32_I2C_SPEED_STANDARD;
1830 ret = device_property_read_u32(&pdev->dev, "clock-frequency",
1831 &clk_rate);
1832 if (!ret && clk_rate >= 1000000)
1833 i2c_dev->speed = STM32_I2C_SPEED_FAST_PLUS;
1834 else if (!ret && clk_rate >= 400000)
1835 i2c_dev->speed = STM32_I2C_SPEED_FAST;
1836 else if (!ret && clk_rate >= 100000)
1837 i2c_dev->speed = STM32_I2C_SPEED_STANDARD;
1838
1839 rst = devm_reset_control_get(&pdev->dev, NULL);
1840 if (IS_ERR(rst)) {
1841 dev_err(&pdev->dev, "Error: Missing controller reset\n");
1842 ret = PTR_ERR(rst);
1843 goto clk_free;
1844 }
1845 reset_control_assert(rst);
1846 udelay(2);
1847 reset_control_deassert(rst);
1848
1849 i2c_dev->dev = &pdev->dev;
1850
1851 ret = devm_request_threaded_irq(&pdev->dev, irq_event,
1852 stm32f7_i2c_isr_event,
1853 stm32f7_i2c_isr_event_thread,
1854 IRQF_ONESHOT,
1855 pdev->name, i2c_dev);
1856 if (ret) {
1857 dev_err(&pdev->dev, "Failed to request irq event %i\n",
1858 irq_event);
1859 goto clk_free;
1860 }
1861
1862 ret = devm_request_irq(&pdev->dev, irq_error, stm32f7_i2c_isr_error, 0,
1863 pdev->name, i2c_dev);
1864 if (ret) {
1865 dev_err(&pdev->dev, "Failed to request irq error %i\n",
1866 irq_error);
1867 goto clk_free;
1868 }
1869
1870 setup = of_device_get_match_data(&pdev->dev);
1871 if (!setup) {
1872 dev_err(&pdev->dev, "Can't get device data\n");
1873 ret = -ENODEV;
1874 goto clk_free;
1875 }
1876 i2c_dev->setup = *setup;
1877
1878 ret = device_property_read_u32(i2c_dev->dev, "i2c-scl-rising-time-ns",
1879 &rise_time);
1880 if (!ret)
1881 i2c_dev->setup.rise_time = rise_time;
1882
1883 ret = device_property_read_u32(i2c_dev->dev, "i2c-scl-falling-time-ns",
1884 &fall_time);
1885 if (!ret)
1886 i2c_dev->setup.fall_time = fall_time;
1887
1888 ret = stm32f7_i2c_setup_timing(i2c_dev, &i2c_dev->setup);
1889 if (ret)
1890 goto clk_free;
1891
1892 adap = &i2c_dev->adap;
1893 i2c_set_adapdata(adap, i2c_dev);
1894 snprintf(adap->name, sizeof(adap->name), "STM32F7 I2C(%pa)",
1895 &res->start);
1896 adap->owner = THIS_MODULE;
1897 adap->timeout = 2 * HZ;
1898 adap->retries = 3;
1899 adap->algo = &stm32f7_i2c_algo;
1900 adap->dev.parent = &pdev->dev;
1901 adap->dev.of_node = pdev->dev.of_node;
1902
1903 init_completion(&i2c_dev->complete);
1904
1905 /* Init DMA config if supported */
1906 i2c_dev->dma = stm32_i2c_dma_request(i2c_dev->dev, phy_addr,
1907 STM32F7_I2C_TXDR,
1908 STM32F7_I2C_RXDR);
1909
1910 platform_set_drvdata(pdev, i2c_dev);
1911
1912 pm_runtime_set_autosuspend_delay(i2c_dev->dev,
> 1913 STM32F7_AUTOSUSPEND_DELAY);
1914 pm_runtime_use_autosuspend(i2c_dev->dev);
1915 pm_runtime_set_active(i2c_dev->dev);
1916 pm_runtime_enable(i2c_dev->dev);
1917
1918 pm_runtime_get_noresume(&pdev->dev);
1919
1920 stm32f7_i2c_hw_config(i2c_dev);
1921
1922 ret = i2c_add_adapter(adap);
1923 if (ret)
1924 goto pm_disable;
1925
1926 dev_info(i2c_dev->dev, "STM32F7 I2C-%d bus adapter\n", adap->nr);
1927
1928 pm_runtime_mark_last_busy(i2c_dev->dev);
1929 pm_runtime_put_autosuspend(i2c_dev->dev);
1930
1931 return 0;
1932
1933 pm_disable:
1934 pm_runtime_put_noidle(i2c_dev->dev);
1935 pm_runtime_disable(i2c_dev->dev);
1936 pm_runtime_set_suspended(i2c_dev->dev);
1937 pm_runtime_dont_use_autosuspend(i2c_dev->dev);
1938
1939 clk_free:
1940 clk_disable_unprepare(i2c_dev->clk);
1941
1942 return ret;
1943 }
1944

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation

Attachment: .config.gz
Description: application/gzip