Hi Abhinav, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on drm-exynos/exynos-drm-next] [also build test WARNING on drm-intel/for-linux-next tegra-drm/drm/tegra/for-next drm-tip/drm-tip linus/master v5.10-rc1 next-20201027] [cannot apply to drm/drm-next] [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/Abhinav-Kumar/Add-devcoredump-support-for-DPU/20201022-130507 base: https://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git exynos-drm-next config: arm64-randconfig-s032-20201026 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-56-gc09e8239-dirty # https://github.com/0day-ci/linux/commit/a7e6907c303a46ea8422fc3c414c22fdfb45d49f git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Abhinav-Kumar/Add-devcoredump-support-for-DPU/20201022-130507 git checkout a7e6907c303a46ea8422fc3c414c22fdfb45d49f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> "sparse warnings: (new ones prefixed by >>)" >> drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:99:50: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@ >> drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:99:50: sparse: expected void const volatile [noderef] __iomem *addr >> drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:99:50: sparse: got char * drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:100:56: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@ drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:100:56: sparse: expected void const volatile [noderef] __iomem *addr drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:100:56: sparse: got char * drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:102:56: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@ drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:102:56: sparse: expected void const volatile [noderef] __iomem *addr drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:102:56: sparse: got char * drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:104:56: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@ drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:104:56: sparse: expected void const volatile [noderef] __iomem *addr drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:104:56: sparse: got char * >> drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:211:30: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char *addr @@ got void [noderef] __iomem * @@ >> drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:211:30: sparse: expected char *addr >> drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:211:30: sparse: got void [noderef] __iomem * >> drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:220:44: sparse: sparse: incorrect type in argument 4 (different address spaces) @@ expected char *base_addr @@ got void [noderef] __iomem *base @@ >> drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:220:44: sparse: expected char *base_addr >> drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:220:44: sparse: got void [noderef] __iomem *base >> drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:229:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char *addr @@ got void [noderef] __iomem *base @@ drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:229:22: sparse: expected char *addr drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:229:22: sparse: got void [noderef] __iomem *base drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:232:36: sparse: sparse: incorrect type in argument 4 (different address spaces) @@ expected char *base_addr @@ got void [noderef] __iomem *base @@ drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:232:36: sparse: expected char *base_addr drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c:232:36: sparse: got void [noderef] __iomem *base vim +99 drivers/gpu/drm/msm/disp/dpu1/dpu_dbg_util.c 20 21 /** 22 * _dpu_dump_reg - helper function for dumping rotator register set content 23 * @dump_name: register set name 24 * @reg_dump_flag: dumping flag controlling in-log/memory dump location 25 * @base_addr: starting address of io region for calculating offsets to print 26 * @addr: starting address offset for dumping 27 * @len_bytes: range of the register set 28 * @dump_mem: output buffer for memory dump location option 29 * @from_isr: whether being called from isr context 30 */ 31 static void _dpu_dump_reg(struct dpu_dbg_base *dbg_base, 32 const char *dump_name, u32 reg_dump_flag, 33 char *base_addr, char *addr, size_t len_bytes, u32 **dump_mem) 34 { 35 u32 in_log, in_mem, len_align, len_padded, in_dump; 36 u32 *dump_addr = NULL; 37 char *end_addr; 38 int i; 39 int rc; 40 41 if (!len_bytes) 42 return; 43 44 in_log = (reg_dump_flag & DPU_DBG_DUMP_IN_LOG); 45 in_mem = (reg_dump_flag & DPU_DBG_DUMP_IN_MEM); 46 in_dump = (reg_dump_flag & DPU_DBG_DUMP_IN_COREDUMP); 47 48 pr_debug("%s: reg_dump_flag=%d in_log=%d in_mem=%d\n", 49 dump_name, reg_dump_flag, in_log, in_mem); 50 51 if (!in_log && !in_mem && !in_dump) 52 return; 53 54 if (in_log) 55 dev_info(dbg_base->dev, "%s: start_offset 0x%lx len 0x%zx\n", 56 dump_name, (unsigned long)(addr - base_addr), 57 len_bytes); 58 59 len_align = (len_bytes + REG_DUMP_ALIGN - 1) / REG_DUMP_ALIGN; 60 len_padded = len_align * REG_DUMP_ALIGN; 61 end_addr = addr + len_bytes; 62 63 if (in_mem || in_dump) { 64 if (dump_mem && !(*dump_mem)) 65 *dump_mem = devm_kzalloc(dbg_base->dev, len_padded, 66 GFP_KERNEL); 67 68 if (dump_mem && *dump_mem) { 69 dump_addr = *dump_mem; 70 dev_info(dbg_base->dev, 71 "%s: start_addr:0x%pK len:0x%x reg_offset=0x%lx\n", 72 dump_name, dump_addr, len_padded, 73 (unsigned long)(addr - base_addr)); 74 if (in_dump) 75 drm_printf(dbg_base->dpu_dbg_printer, 76 "%s: start_addr:0x%pK len:0x%x reg_offset=0x%lx\n", 77 dump_name, dump_addr, 78 len_padded, 79 (unsigned long)(addr - 80 base_addr)); 81 } else { 82 in_mem = 0; 83 pr_err("dump_mem: kzalloc fails!\n"); 84 } 85 } 86 87 if (_dpu_power_check(dbg_base->dump_mode)) { 88 rc = pm_runtime_get_sync(dbg_base->dev); 89 if (rc < 0) { 90 pr_err("failed to enable power %d\n", rc); 91 return; 92 } 93 } 94 95 for (i = 0; i < len_align; i++) { 96 u32 x0, x4, x8, xc; 97 98 if (in_log || in_mem) { > 99 x0 = (addr < end_addr) ? readl_relaxed(addr + 0x0) : 0; 100 x4 = (addr + 0x4 < end_addr) ? readl_relaxed(addr + 101 0x4) : 0; 102 x8 = (addr + 0x8 < end_addr) ? readl_relaxed(addr + 103 0x8) : 0; 104 xc = (addr + 0xc < end_addr) ? readl_relaxed(addr + 105 0xc) : 0; 106 } 107 108 if (in_log) 109 dev_info(dbg_base->dev, 110 "0x%lx : %08x %08x %08x %08x\n", 111 (unsigned long)(addr - base_addr), 112 x0, x4, x8, xc); 113 114 if (dump_addr && in_mem) { 115 dump_addr[i * 4] = x0; 116 dump_addr[i * 4 + 1] = x4; 117 dump_addr[i * 4 + 2] = x8; 118 dump_addr[i * 4 + 3] = xc; 119 } 120 121 if (in_dump) { 122 drm_printf(dbg_base->dpu_dbg_printer, 123 "0x%lx : %08x %08x %08x %08x\n", 124 (unsigned long)(addr - base_addr), 125 dump_addr[i * 4], 126 dump_addr[i * 4 + 1], 127 dump_addr[i * 4 + 2], 128 dump_addr[i * 4 + 3]); 129 130 } 131 132 addr += REG_DUMP_ALIGN; 133 } 134 135 if (_dpu_power_check(dbg_base->dump_mode)) 136 pm_runtime_put_sync(dbg_base->dev); 137 } 138 139 /** 140 * _dpu_dbg_get_dump_range - helper to retrieve dump length for a range node 141 * @range_node: range node to dump 142 * @max_offset: max offset of the register base 143 * @Return: length 144 */ 145 static u32 _dpu_dbg_get_dump_range(struct dpu_dbg_reg_offset *range_node, 146 size_t max_offset) 147 { 148 u32 length = 0; 149 150 if (range_node->start == 0 && range_node->end == 0) { 151 length = max_offset; 152 } else if (range_node->start < max_offset) { 153 if (range_node->end > max_offset) 154 length = max_offset - range_node->start; 155 else if (range_node->start < range_node->end) 156 length = range_node->end - range_node->start; 157 } 158 159 return length; 160 } 161 162 static int _dpu_dump_reg_range_cmp(void *priv, struct list_head *a, 163 struct list_head *b) 164 { 165 struct dpu_dbg_reg_range *ar, *br; 166 167 if (!a || !b) 168 return 0; 169 170 ar = container_of(a, struct dpu_dbg_reg_range, head); 171 br = container_of(b, struct dpu_dbg_reg_range, head); 172 173 return ar->offset.start - br->offset.start; 174 } 175 176 /** 177 * _dpu_dump_reg_by_ranges - dump ranges or full range of the register blk base 178 * @dbg: register blk base structure 179 * @reg_dump_flag: dump target, memory, kernel log, or both 180 */ 181 static void _dpu_dump_reg_by_ranges(struct dpu_dbg_base *dbg_base, 182 struct dpu_dbg_reg_base *dbg, 183 u32 reg_dump_flag) 184 { 185 char *addr; 186 size_t len; 187 struct dpu_dbg_reg_range *range_node; 188 189 if (!dbg || !(dbg->base || dbg->cb)) { 190 pr_err("dbg base is null!\n"); 191 return; 192 } 193 194 dev_info(dbg_base->dev, "%s:=========%s DUMP=========\n", __func__, 195 dbg->name); 196 197 if (reg_dump_flag & DPU_DBG_DUMP_IN_COREDUMP) 198 drm_printf(dbg_base->dpu_dbg_printer, 199 "%s:=========%s DUMP=========\n", 200 __func__, dbg->name); 201 202 if (dbg->cb) { 203 dbg->cb(dbg->cb_ptr); 204 /* If there is a list to dump the registers by ranges, use the ranges */ 205 } else if (!list_empty(&dbg->sub_range_list)) { 206 /* sort the list by start address first */ 207 list_sort(NULL, &dbg->sub_range_list, _dpu_dump_reg_range_cmp); 208 list_for_each_entry(range_node, &dbg->sub_range_list, head) { 209 len = _dpu_dbg_get_dump_range(&range_node->offset, 210 dbg->max_offset); > 211 addr = dbg->base + range_node->offset.start; 212 213 pr_debug("%s: range_base=0x%pK start=0x%x end=0x%x\n", 214 range_node->range_name, 215 addr, range_node->offset.start, 216 range_node->offset.end); 217 218 _dpu_dump_reg(dbg_base, range_node->range_name, 219 reg_dump_flag, > 220 dbg->base, addr, len, 221 &range_node->reg_dump); 222 } 223 } else { 224 /* If there is no list to dump ranges, dump all registers */ 225 dev_info(dbg_base->dev, 226 "Ranges not found, will dump full registers\n"); 227 dev_info(dbg_base->dev, "base:0x%pK len:0x%zx\n", dbg->base, 228 dbg->max_offset); > 229 addr = dbg->base; 230 len = dbg->max_offset; 231 _dpu_dump_reg(dbg_base, dbg->name, reg_dump_flag, 232 dbg->base, addr, len, 233 &dbg->reg_dump); 234 } 235 } 236 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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