Re: [PATCH] drm: manager: Remove the unused variable prev

From: kernel test robot
Date: Wed Aug 09 2023 - 09:17:43 EST

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In reply to: Jiapeng Chong: "[PATCH] drm: manager: Remove the unused variable prev"
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Hi Jiapeng,

kernel test robot noticed the following build warnings:

[auto build test WARNING on drm-misc/drm-misc-next]
[also build test WARNING on next-20230809]
[cannot apply to linus/master v6.5-rc5]
[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#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Jiapeng-Chong/drm-manager-Remove-the-unused-variable-prev/20230809-145348
base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link: https://lore.kernel.org/r/20230809065229.71300-1-jiapeng.chong%40linux.alibaba.com
patch subject: [PATCH] drm: manager: Remove the unused variable prev
config: riscv-randconfig-r042-20230809 (https://download.01.org/0day-ci/archive/20230809/202308092135.95Kg6wDq-lkp@xxxxxxxxx/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce: (https://download.01.org/0day-ci/archive/20230809/202308092135.95Kg6wDq-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308092135.95Kg6wDq-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/drm_gpuva_mgr.c:1209:2: warning: label at end of compound statement is a C2x extension [-Wc2x-extensions]
}
^
1 warning generated.

vim +1209 drivers/gpu/drm/drm_gpuva_mgr.c

e6303f323b1ad9 Danilo Krummrich 2023-07-20 1072
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1073 static int
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1074 __drm_gpuva_sm_map(struct drm_gpuva_manager *mgr,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1075 const struct drm_gpuva_fn_ops *ops, void *priv,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1076 u64 req_addr, u64 req_range,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1077 struct drm_gem_object *req_obj, u64 req_offset)
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1078 {
e927727c10be76 Jiapeng Chong 2023-08-09 1079 struct drm_gpuva *va, *next = NULL;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1080 u64 req_end = req_addr + req_range;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1081 int ret;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1082
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1083 if (unlikely(!drm_gpuva_range_valid(mgr, req_addr, req_range)))
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1084 return -EINVAL;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1085
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1086 drm_gpuva_for_each_va_range_safe(va, next, mgr, req_addr, req_end) {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1087 struct drm_gem_object *obj = va->gem.obj;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1088 u64 offset = va->gem.offset;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1089 u64 addr = va->va.addr;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1090 u64 range = va->va.range;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1091 u64 end = addr + range;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1092 bool merge = !!va->gem.obj;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1093
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1094 if (addr == req_addr) {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1095 merge &= obj == req_obj &&
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1096 offset == req_offset;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1097
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1098 if (end == req_end) {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1099 ret = op_unmap_cb(ops, priv, va, merge);
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1100 if (ret)
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1101 return ret;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1102 break;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1103 }
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1104
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1105 if (end < req_end) {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1106 ret = op_unmap_cb(ops, priv, va, merge);
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1107 if (ret)
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1108 return ret;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1109 goto next;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1110 }
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1111
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1112 if (end > req_end) {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1113 struct drm_gpuva_op_map n = {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1114 .va.addr = req_end,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1115 .va.range = range - req_range,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1116 .gem.obj = obj,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1117 .gem.offset = offset + req_range,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1118 };
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1119 struct drm_gpuva_op_unmap u = {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1120 .va = va,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1121 .keep = merge,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1122 };
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1123
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1124 ret = op_remap_cb(ops, priv, NULL, &n, &u);
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1125 if (ret)
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1126 return ret;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1127 break;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1128 }
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1129 } else if (addr < req_addr) {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1130 u64 ls_range = req_addr - addr;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1131 struct drm_gpuva_op_map p = {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1132 .va.addr = addr,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1133 .va.range = ls_range,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1134 .gem.obj = obj,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1135 .gem.offset = offset,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1136 };
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1137 struct drm_gpuva_op_unmap u = { .va = va };
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1138
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1139 merge &= obj == req_obj &&
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1140 offset + ls_range == req_offset;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1141 u.keep = merge;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1142
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1143 if (end == req_end) {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1144 ret = op_remap_cb(ops, priv, &p, NULL, &u);
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1145 if (ret)
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1146 return ret;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1147 break;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1148 }
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1149
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1150 if (end < req_end) {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1151 ret = op_remap_cb(ops, priv, &p, NULL, &u);
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1152 if (ret)
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1153 return ret;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1154 goto next;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1155 }
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1156
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1157 if (end > req_end) {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1158 struct drm_gpuva_op_map n = {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1159 .va.addr = req_end,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1160 .va.range = end - req_end,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1161 .gem.obj = obj,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1162 .gem.offset = offset + ls_range +
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1163 req_range,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1164 };
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1165
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1166 ret = op_remap_cb(ops, priv, &p, &n, &u);
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1167 if (ret)
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1168 return ret;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1169 break;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1170 }
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1171 } else if (addr > req_addr) {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1172 merge &= obj == req_obj &&
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1173 offset == req_offset +
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1174 (addr - req_addr);
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1175
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1176 if (end == req_end) {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1177 ret = op_unmap_cb(ops, priv, va, merge);
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1178 if (ret)
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1179 return ret;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1180 break;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1181 }
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1182
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1183 if (end < req_end) {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1184 ret = op_unmap_cb(ops, priv, va, merge);
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1185 if (ret)
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1186 return ret;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1187 goto next;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1188 }
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1189
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1190 if (end > req_end) {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1191 struct drm_gpuva_op_map n = {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1192 .va.addr = req_end,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1193 .va.range = end - req_end,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1194 .gem.obj = obj,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1195 .gem.offset = offset + req_end - addr,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1196 };
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1197 struct drm_gpuva_op_unmap u = {
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1198 .va = va,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1199 .keep = merge,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1200 };
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1201
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1202 ret = op_remap_cb(ops, priv, NULL, &n, &u);
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1203 if (ret)
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1204 return ret;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1205 break;
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1206 }
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1207 }
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1208 next:
e6303f323b1ad9 Danilo Krummrich 2023-07-20 @1209 }
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1210
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1211 return op_map_cb(ops, priv,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1212 req_addr, req_range,
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1213 req_obj, req_offset);
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1214 }
e6303f323b1ad9 Danilo Krummrich 2023-07-20 1215

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Next message: Yosry Ahmed: "Re: [PATCH] mm: memcg: provide accurate stats for userspace reads"
Previous message: Christophe Leroy: "Re: [PATCH 1/2] powerpc: mark more local variables as volatile"
In reply to: Jiapeng Chong: "[PATCH] drm: manager: Remove the unused variable prev"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]