Hi Sam, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on at91/at91-next] [also build test WARNING on v4.18 next-20180814] [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/Sam-Ravnborg/add-at91sam9-LCDC-DRM-driver/20180814-163056 base: https://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91.git at91-next config: x86_64-randconfig-g0-08151425 (attached as .config) compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): In file included from include/linux/kernel.h:15:0, from include/linux/list.h:9, from include/linux/regmap.h:16, from include/linux/mfd/atmel-lcdc.h:11, from drivers/mfd/atmel-lcdc.c:13: drivers/mfd/atmel-lcdc.c: In function 'lcdc_probe': >> include/linux/build_bug.h:29:45: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long unsigned int' [-Wformat=] #define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:(-!!(e)); })) ^ include/linux/compiler-gcc.h:65:28: note: in expansion of macro 'BUILD_BUG_ON_ZERO' #define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0])) ^ include/linux/kernel.h:72:59: note: in expansion of macro '__must_be_array' #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) ^ >> drivers/mfd/atmel-lcdc.c:128:4: note: in expansion of macro 'ARRAY_SIZE' ARRAY_SIZE(lcdc_cells), ret); ^ -- In file included from include/linux/kernel.h:15:0, from include/linux/list.h:9, from include/linux/regmap.h:16, from include/linux/mfd/atmel-lcdc.h:11, from drivers//mfd/atmel-lcdc.c:13: drivers//mfd/atmel-lcdc.c: In function 'lcdc_probe': >> include/linux/build_bug.h:29:45: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long unsigned int' [-Wformat=] #define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:(-!!(e)); })) ^ include/linux/compiler-gcc.h:65:28: note: in expansion of macro 'BUILD_BUG_ON_ZERO' #define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0])) ^ include/linux/kernel.h:72:59: note: in expansion of macro '__must_be_array' #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) ^ drivers//mfd/atmel-lcdc.c:128:4: note: in expansion of macro 'ARRAY_SIZE' ARRAY_SIZE(lcdc_cells), ret); ^ vim +/ARRAY_SIZE +128 drivers/mfd/atmel-lcdc.c 66 67 static int lcdc_probe(struct platform_device *pdev) 68 { 69 struct atmel_mfd_lcdc *lcdc; 70 struct lcdc_regmap *regmap; 71 struct resource *res; 72 struct device *dev; 73 int ret; 74 75 dev = &pdev->dev; 76 77 regmap = devm_kzalloc(dev, sizeof(*regmap), GFP_KERNEL); 78 if (!regmap) 79 return -ENOMEM; 80 81 lcdc = devm_kzalloc(dev, sizeof(*lcdc), GFP_KERNEL); 82 if (!lcdc) 83 return -ENOMEM; 84 85 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 86 regmap->regs = devm_ioremap_resource(dev, res); 87 if (IS_ERR(regmap->regs)) { 88 dev_err(dev, "Failed to allocate IO mem (%ld)\n", 89 PTR_ERR(regmap->regs)); 90 return PTR_ERR(regmap->regs); 91 } 92 93 lcdc->irq = platform_get_irq(pdev, 0); 94 if (lcdc->irq < 0) { 95 dev_err(dev, "Failed to get irq (%d)\n", lcdc->irq); 96 return lcdc->irq; 97 } 98 99 lcdc->lcdc_clk = devm_clk_get(dev, "lcdc_clk"); 100 if (IS_ERR(lcdc->lcdc_clk)) { 101 dev_err(dev, "failed to get lcdc clock (%ld)\n", 102 PTR_ERR(lcdc->lcdc_clk)); 103 return PTR_ERR(lcdc->lcdc_clk); 104 } 105 106 lcdc->bus_clk = devm_clk_get(dev, "hclk"); 107 if (IS_ERR(lcdc->bus_clk)) { 108 dev_err(dev, "failed to get bus clock (%ld)\n", 109 PTR_ERR(lcdc->bus_clk)); 110 return PTR_ERR(lcdc->bus_clk); 111 } 112 113 lcdc->regmap = devm_regmap_init(dev, NULL, regmap, 114 &lcdc_regmap_config); 115 if (IS_ERR(lcdc->regmap)) { 116 dev_err(dev, "Failed to init regmap (%ld)\n", 117 PTR_ERR(lcdc->regmap)); 118 return PTR_ERR(lcdc->regmap); 119 } 120 121 dev_set_drvdata(dev, lcdc); 122 123 ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, 124 lcdc_cells, ARRAY_SIZE(lcdc_cells), 125 NULL, 0, NULL); 126 if (ret < 0) 127 dev_err(dev, "Failed to add %d mfd devices (%d)\n", > 128 ARRAY_SIZE(lcdc_cells), ret); 129 130 return ret; 131 } 132 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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