Messages in this thread | | | Date | Wed, 27 Apr 2022 09:02:39 +0800 | From | kernel test robot <> | Subject | [thierryreding:for-5.19/work 141/141] drivers/iommu/of_iommu.c:227:24: warning: variable 'end' set but not used |
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tree: https://github.com/thierryreding/linux for-5.19/work head: a39ec325554470289e8384e30d06a22960d1dd7b commit: a39ec325554470289e8384e30d06a22960d1dd7b [141/141] WIP config: i386-randconfig-a003-20220425 (https://download.01.org/0day-ci/archive/20220427/202204270946.XYoXuYbi-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 1cddcfdc3c683b393df1a5c9063252eb60e52818) 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 # https://github.com/thierryreding/linux/commit/a39ec325554470289e8384e30d06a22960d1dd7b git remote add thierryreding https://github.com/thierryreding/linux git fetch --no-tags thierryreding for-5.19/work git checkout a39ec325554470289e8384e30d06a22960d1dd7b # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/iommu/
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/iommu/of_iommu.c:227:24: warning: variable 'end' set but not used [-Wunused-but-set-variable] phys_addr_t start, end; ^ >> drivers/iommu/of_iommu.c:222:17: warning: variable 'index' set but not used [-Wunused-but-set-variable] unsigned int index = 0; ^ 2 warnings generated.
vim +/end +227 drivers/iommu/of_iommu.c
178 179 /** 180 * of_iommu_get_resv_regions - reserved region driver helper for device tree 181 * @dev: device for which to get reserved regions 182 * @list: reserved region list 183 * 184 * IOMMU drivers can use this to implement their .get_resv_regions() callback 185 * for memory regions attached to a device tree node. See the reserved-memory 186 * device tree bindings on how to use these: 187 * 188 * Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt 189 */ 190 void of_iommu_get_resv_regions(struct device *dev, struct list_head *list) 191 { 192 #if IS_ENABLED(CONFIG_OF_ADDRESS) 193 struct of_phandle_iterator it; 194 int err; 195 196 of_for_each_phandle(&it, err, dev->of_node, "memory-region", NULL, 0) { 197 struct iommu_resv_region *region; 198 struct resource res; 199 const __be32 *maps; 200 int size; 201 202 memset(&res, 0, sizeof(res)); 203 204 /* 205 * The "reg" property is optional and can be omitted by reserved-memory regions 206 * that represent reservations in the IOVA space, which are regions that should 207 * not be mapped. 208 */ 209 if (of_find_property(it.node, "reg", NULL)) { 210 err = of_address_to_resource(it.node, 0, &res); 211 if (err < 0) { 212 dev_err(dev, "failed to parse memory region %pOF: %d\n", 213 it.node, err); 214 continue; 215 } 216 } 217 218 maps = of_get_property(it.node, "iommu-addresses", &size); 219 if (maps) { 220 const __be32 *end = maps + size / sizeof(__be32); 221 struct device_node *np; > 222 unsigned int index = 0; 223 u32 phandle; 224 int na, ns; 225 226 while (maps < end) { > 227 phys_addr_t start, end;
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