Hi, [auto build test WARNING on next-20160421] [also build test WARNING on v4.6-rc4] [cannot apply to robh/for-next asoc/for-next v4.6-rc4 v4.6-rc3 v4.6-rc2] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: https://github.com/0day-ci/linux/commits/Andy-Shevchenko/Fixes-cleanups-in-dw_dmac-affects-on-few-subsystems/20160421-231541 config: i386-randconfig-x003-201616 (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=i386 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/dma/dw/platform.c: In function 'dw_probe': >> drivers/dma/dw/platform.c:119:20: warning: 'pdata' may be used uninitialized in this function [-Wmaybe-uninitialized] pdata->nr_masters = nr_masters; ^ drivers/dma/dw/platform.c:104:31: note: 'pdata' was declared here struct dw_dma_platform_data *pdata; ^ vim +/pdata +119 drivers/dma/dw/platform.c 103 struct device_node *np = pdev->dev.of_node; 104 struct dw_dma_platform_data *pdata; 105 u32 tmp, arr[DW_DMA_MAX_NR_MASTERS]; 106 u32 nr_masters; 107 u32 nr_channels; 108 109 if (!np) { 110 dev_err(&pdev->dev, "Missing DT data\n"); 111 return NULL; 112 } 113 114 if (of_property_read_u32(np, "dma-masters", &nr_masters)) 115 return NULL; 116 if (nr_masters < 1 || nr_masters > DW_DMA_MAX_NR_MASTERS) 117 return NULL; 118 > 119 pdata->nr_masters = nr_masters; 120 121 if (of_property_read_u32(np, "dma-channels", &nr_channels)) 122 return NULL; 123 124 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); 125 if (!pdata) 126 return NULL; 127 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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