Hi Joakim,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/irq/core]
[also build test ERROR on linux/master linus/master v5.8-rc5 next-20200716]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Joakim-Zhang/irqchip-imx-intmux-add-PM-support/20200716-193311
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 8fa88a88d573093868565a1afba43b5ae5b3a316
config: c6x-randconfig-r011-20200717 (attached as .config)
compiler: c6x-elf-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
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=c6x 

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

All errors (new ones prefixed by >>):

   drivers/irqchip/irq-imx-intmux.c: In function 'imx_intmux_probe':
>> drivers/irqchip/irq-imx-intmux.c:240:7: error: 'struct intmux_data' has no member named 'saved_reg'
     240 |   data->saved_reg = devm_kzalloc(&pdev->dev,
         |       ^~
   drivers/irqchip/irq-imx-intmux.c:243:12: error: 'struct intmux_data' has no member named 'saved_reg'
     243 |   if (!data->saved_reg)
         |            ^~
   At top level:
   drivers/irqchip/irq-imx-intmux.c:351:32: warning: 'imx_intmux_pm_ops' defined but not used [-Wunused-const-variable=]
     351 | static const struct dev_pm_ops imx_intmux_pm_ops = {
         |                                ^~~~~~~~~~~~~~~~~

vim +240 drivers/irqchip/irq-imx-intmux.c

   198	
   199	static int imx_intmux_probe(struct platform_device *pdev)
   200	{
   201		struct device_node *np = pdev->dev.of_node;
   202		struct irq_domain *domain;
   203		struct intmux_data *data;
   204		int channum;
   205		int i, ret;
   206	
   207		channum = platform_irq_count(pdev);
   208		if (channum == -EPROBE_DEFER) {
   209			return -EPROBE_DEFER;
   210		} else if (channum > CHAN_MAX_NUM) {
   211			dev_err(&pdev->dev, "supports up to %d multiplex channels\n",
   212				CHAN_MAX_NUM);
   213			return -EINVAL;
   214		}
   215	
   216		data = devm_kzalloc(&pdev->dev, sizeof(*data) +
   217				    channum * sizeof(data->irqchip_data[0]), GFP_KERNEL);
   218		if (!data)
   219			return -ENOMEM;
   220	
   221		data->regs = devm_platform_ioremap_resource(pdev, 0);
   222		if (IS_ERR(data->regs)) {
   223			dev_err(&pdev->dev, "failed to initialize reg\n");
   224			return PTR_ERR(data->regs);
   225		}
   226	
   227		data->ipg_clk = devm_clk_get(&pdev->dev, "ipg");
   228		if (IS_ERR(data->ipg_clk)) {
   229			ret = PTR_ERR(data->ipg_clk);
   230			if (ret != -EPROBE_DEFER)
   231				dev_err(&pdev->dev, "failed to get ipg clk: %d\n", ret);
   232			return ret;
   233		}
   234	
   235		data->channum = channum;
   236		raw_spin_lock_init(&data->lock);
   237	
   238		if (IS_ENABLED(CONFIG_PM)) {
   239			/* save CHANIER register */
 > 240			data->saved_reg = devm_kzalloc(&pdev->dev,
   241						       sizeof(unsigned int) * channum,
   242						       GFP_KERNEL);
   243			if (!data->saved_reg)
   244				return -ENOMEM;
   245		}
   246	
   247		ret = clk_prepare_enable(data->ipg_clk);
   248		if (ret) {
   249			dev_err(&pdev->dev, "failed to enable ipg clk: %d\n", ret);
   250			return ret;
   251		}
   252	
   253		for (i = 0; i < channum; i++) {
   254			data->irqchip_data[i].chanidx = i;
   255	
   256			data->irqchip_data[i].irq = irq_of_parse_and_map(np, i);
   257			if (data->irqchip_data[i].irq <= 0) {
   258				ret = -EINVAL;
   259				dev_err(&pdev->dev, "failed to get irq\n");
   260				goto out;
   261			}
   262	
   263			domain = irq_domain_add_linear(np, 32, &imx_intmux_domain_ops,
   264						       &data->irqchip_data[i]);
   265			if (!domain) {
   266				ret = -ENOMEM;
   267				dev_err(&pdev->dev, "failed to create IRQ domain\n");
   268				goto out;
   269			}
   270			data->irqchip_data[i].domain = domain;
   271	
   272			/* disable all interrupt sources of this channel firstly */
   273			writel_relaxed(0, data->regs + CHANIER(i));
   274	
   275			irq_set_chained_handler_and_data(data->irqchip_data[i].irq,
   276							 imx_intmux_irq_handler,
   277							 &data->irqchip_data[i]);
   278		}
   279	
   280		platform_set_drvdata(pdev, data);
   281	
   282		return 0;
   283	out:
   284		clk_disable_unprepare(data->ipg_clk);
   285		return ret;
   286	}
   287	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org