tree: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git hack/devm_cast_abuse head: 542cb40d75bf747a26ac91aa28f1a1ecb19b89e3 commit: 987add0e7cd705f0bf7beaa0543440d7db4a5736 [3/17] serial: sccnxp: Convert to devm_clk_prepare_enable() config: sparc-randconfig-r022-20201215 (attached as .config) compiler: sparc64-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/com... git remote add arm-platforms https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git git fetch --no-tags arm-platforms hack/devm_cast_abuse git checkout 987add0e7cd705f0bf7beaa0543440d7db4a5736 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sparc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/tty/serial/sccnxp.c: In function 'sccnxp_probe': 923 | ret = devm_clk_prepare_enable(&pdev->dev, clk); | ^~~~~~~~~~~~~~~~~~~~~~~ | clk_prepare_enable cc1: some warnings being treated as errors vim +923 drivers/tty/serial/sccnxp.c 880 881 static int sccnxp_probe(struct platform_device *pdev) 882 { 883 struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 884 struct sccnxp_pdata *pdata = dev_get_platdata(&pdev->dev); 885 int i, ret, uartclk; 886 struct sccnxp_port *s; 887 void __iomem *membase; 888 struct clk *clk; 889 890 membase = devm_ioremap_resource(&pdev->dev, res); 891 if (IS_ERR(membase)) 892 return PTR_ERR(membase); 893 894 s = devm_kzalloc(&pdev->dev, sizeof(struct sccnxp_port), GFP_KERNEL); 895 if (!s) { 896 dev_err(&pdev->dev, "Error allocating port structure\n"); 897 return -ENOMEM; 898 } 899 platform_set_drvdata(pdev, s); 900 901 spin_lock_init(&s->lock); 902 903 s->chip = (struct sccnxp_chip *)pdev->id_entry->driver_data; 904 905 s->regulator = devm_regulator_get(&pdev->dev, "vcc"); 906 if (!IS_ERR(s->regulator)) { 907 ret = regulator_enable(s->regulator); 908 if (ret) { 909 dev_err(&pdev->dev, 910 "Failed to enable regulator: %i\n", ret); 911 return ret; 912 } 913 } else if (PTR_ERR(s->regulator) == -EPROBE_DEFER) 914 return -EPROBE_DEFER; 915 916 clk = devm_clk_get(&pdev->dev, NULL); 917 if (IS_ERR(clk)) { 918 ret = PTR_ERR(clk); 919 if (ret == -EPROBE_DEFER) 920 goto err_out; 921 uartclk = 0; 922 } else { 924 if (ret) 925 goto err_out; 926 927 uartclk = clk_get_rate(clk); 928 } 929 930 if (!uartclk) { 931 dev_notice(&pdev->dev, "Using default clock frequency\n"); 932 uartclk = s->chip->freq_std; 933 } 934 935 /* Check input frequency */ 936 if ((uartclk < s->chip->freq_min) || (uartclk > s->chip->freq_max)) { 937 dev_err(&pdev->dev, "Frequency out of bounds\n"); 938 ret = -EINVAL; 939 goto err_out; 940 } 941 942 if (pdata) 943 memcpy(&s->pdata, pdata, sizeof(struct sccnxp_pdata)); 944 945 if (s->pdata.poll_time_us) { 946 dev_info(&pdev->dev, "Using poll mode, resolution %u usecs\n", 947 s->pdata.poll_time_us); 948 s->poll = 1; 949 } 950 951 if (!s->poll) { 952 s->irq = platform_get_irq(pdev, 0); 953 if (s->irq < 0) { 954 ret = -ENXIO; 955 goto err_out; 956 } 957 } 958 959 s->uart.owner = THIS_MODULE; 960 s->uart.dev_name = "ttySC"; 961 s->uart.major = SCCNXP_MAJOR; 962 s->uart.minor = SCCNXP_MINOR; 963 s->uart.nr = s->chip->nr; 964 #ifdef CONFIG_SERIAL_SCCNXP_CONSOLE 965 s->uart.cons = &s->console; 966 s->uart.cons->device = uart_console_device; 967 s->uart.cons->write = sccnxp_console_write; 968 s->uart.cons->setup = sccnxp_console_setup; 969 s->uart.cons->flags = CON_PRINTBUFFER; 970 s->uart.cons->index = -1; 971 s->uart.cons->data = s; 972 strcpy(s->uart.cons->name, "ttySC"); 973 #endif 974 ret = uart_register_driver(&s->uart); 975 if (ret) { 976 dev_err(&pdev->dev, "Registering UART driver failed\n"); 977 goto err_out; 978 } 979 980 for (i = 0; i < s->uart.nr; i++) { 981 s->port[i].line = i; 982 s->port[i].dev = &pdev->dev; 983 s->port[i].irq = s->irq; 984 s->port[i].type = PORT_SC26XX; 985 s->port[i].fifosize = s->chip->fifosize; 986 s->port[i].flags = UPF_SKIP_TEST | UPF_FIXED_TYPE; 987 s->port[i].iotype = UPIO_MEM; 988 s->port[i].mapbase = res->start; 989 s->port[i].membase = membase; 990 s->port[i].regshift = s->pdata.reg_shift; 991 s->port[i].uartclk = uartclk; 992 s->port[i].ops = &sccnxp_ops; 993 s->port[i].has_sysrq = IS_ENABLED(CONFIG_SERIAL_SCCNXP_CONSOLE); 994 uart_add_one_port(&s->uart, &s->port[i]); 995 /* Set direction to input */ 996 if (s->chip->flags & SCCNXP_HAVE_IO) 997 sccnxp_set_bit(&s->port[i], DIR_OP, 0); 998 } 999 1000 /* Disable interrupts */ 1001 s->imr = 0; 1002 sccnxp_write(&s->port[0], SCCNXP_IMR_REG, 0); 1003 1004 if (!s->poll) { 1005 ret = devm_request_threaded_irq(&pdev->dev, s->irq, NULL, 1006 sccnxp_ist, 1007 IRQF_TRIGGER_FALLING | 1008 IRQF_ONESHOT, 1009 dev_name(&pdev->dev), s); 1010 if (!ret) 1011 return 0; 1012 1013 dev_err(&pdev->dev, "Unable to reguest IRQ %i\n", s->irq); 1014 } else { 1015 timer_setup(&s->timer, sccnxp_timer, 0); 1016 mod_timer(&s->timer, jiffies + 1017 usecs_to_jiffies(s->pdata.poll_time_us)); 1018 return 0; 1019 } 1020 1021 uart_unregister_driver(&s->uart); 1022 err_out: 1023 if (!IS_ERR(s->regulator)) 1024 regulator_disable(s->regulator); 1025 1026 return ret; 1027 } 1028 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org