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Thu, 02 Nov 2023 16:56:14 +0000 Date: Fri, 3 Nov 2023 00:55:48 +0800 From: kernel test robot To: Serge Semin Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Lorenzo Pieralisi , Bjorn Helgaas , Manivannan Sadhasivam Subject: drivers/dma/dw-edma/dw-edma-v0-debugfs.c:250:50: warning: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size 8 Message-ID: <202311030041.DznTeuS5-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 21e80f3841c01aeaf32d7aee7bbc87b3db1aa0c6 commit: 00498167650b682a053b85e0e705f59a54f427a3 dmaengine: dw-edma: Simplify debugfs context CSRs init procedure date: 9 months ago config: parisc-randconfig-001-20231102 (https://download.01.org/0day-ci/archive/20231103/202311030041.DznTeuS5-lkp@intel.com/config) compiler: hppa-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231103/202311030041.DznTeuS5-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202311030041.DznTeuS5-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/dma/dw-edma/dw-edma-v0-debugfs.c: In function 'dw_edma_debugfs_regs_rd': >> drivers/dma/dw-edma/dw-edma-v0-debugfs.c:250:50: warning: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size 8 [-Wformat-truncation=] 250 | snprintf(name, sizeof(name), "%s:%d", CHANNEL_STR, i); | ^~ drivers/dma/dw-edma/dw-edma-v0-debugfs.c:250:46: note: directive argument in the range [-2147483641, 65534] 250 | snprintf(name, sizeof(name), "%s:%d", CHANNEL_STR, i); | ^~~~~~~ drivers/dma/dw-edma/dw-edma-v0-debugfs.c:250:17: note: 'snprintf' output between 10 and 20 bytes into a destination of size 16 250 | snprintf(name, sizeof(name), "%s:%d", CHANNEL_STR, i); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/dma/dw-edma/dw-edma-v0-debugfs.c: In function 'dw_edma_debugfs_regs_wr': drivers/dma/dw-edma/dw-edma-v0-debugfs.c:188:50: warning: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size 8 [-Wformat-truncation=] 188 | snprintf(name, sizeof(name), "%s:%d", CHANNEL_STR, i); | ^~ drivers/dma/dw-edma/dw-edma-v0-debugfs.c:188:46: note: directive argument in the range [-2147483641, 65534] 188 | snprintf(name, sizeof(name), "%s:%d", CHANNEL_STR, i); | ^~~~~~~ drivers/dma/dw-edma/dw-edma-v0-debugfs.c:188:17: note: 'snprintf' output between 10 and 20 bytes into a destination of size 16 188 | snprintf(name, sizeof(name), "%s:%d", CHANNEL_STR, i); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +250 drivers/dma/dw-edma/dw-edma-v0-debugfs.c 305aebeff8795c Gustavo Pimentel 2019-06-04 195 95c55b7836f579 Serge Semin 2023-01-13 196 static void dw_edma_debugfs_regs_rd(struct dentry *dent) 305aebeff8795c Gustavo Pimentel 2019-06-04 197 { 345e3a95b2fb46 Serge Semin 2023-01-13 198 const struct dw_edma_debugfs_entry debugfs_regs[] = { 305aebeff8795c Gustavo Pimentel 2019-06-04 199 /* eDMA global registers */ 305aebeff8795c Gustavo Pimentel 2019-06-04 200 RD_REGISTER(engine_en), 305aebeff8795c Gustavo Pimentel 2019-06-04 201 RD_REGISTER(doorbell), 04e0a39fc10f82 Gustavo Pimentel 2021-02-18 202 RD_REGISTER(ch_arb_weight.lsb), 04e0a39fc10f82 Gustavo Pimentel 2021-02-18 203 RD_REGISTER(ch_arb_weight.msb), 305aebeff8795c Gustavo Pimentel 2019-06-04 204 /* eDMA interrupts registers */ 305aebeff8795c Gustavo Pimentel 2019-06-04 205 RD_REGISTER(int_status), 305aebeff8795c Gustavo Pimentel 2019-06-04 206 RD_REGISTER(int_mask), 305aebeff8795c Gustavo Pimentel 2019-06-04 207 RD_REGISTER(int_clear), 04e0a39fc10f82 Gustavo Pimentel 2021-02-18 208 RD_REGISTER(err_status.lsb), 04e0a39fc10f82 Gustavo Pimentel 2021-02-18 209 RD_REGISTER(err_status.msb), 305aebeff8795c Gustavo Pimentel 2019-06-04 210 RD_REGISTER(linked_list_err_en), 04e0a39fc10f82 Gustavo Pimentel 2021-02-18 211 RD_REGISTER(done_imwr.lsb), 04e0a39fc10f82 Gustavo Pimentel 2021-02-18 212 RD_REGISTER(done_imwr.msb), 04e0a39fc10f82 Gustavo Pimentel 2021-02-18 213 RD_REGISTER(abort_imwr.lsb), 04e0a39fc10f82 Gustavo Pimentel 2021-02-18 214 RD_REGISTER(abort_imwr.msb), 305aebeff8795c Gustavo Pimentel 2019-06-04 215 RD_REGISTER(ch01_imwr_data), 305aebeff8795c Gustavo Pimentel 2019-06-04 216 RD_REGISTER(ch23_imwr_data), 305aebeff8795c Gustavo Pimentel 2019-06-04 217 RD_REGISTER(ch45_imwr_data), 305aebeff8795c Gustavo Pimentel 2019-06-04 218 RD_REGISTER(ch67_imwr_data), 305aebeff8795c Gustavo Pimentel 2019-06-04 219 }; 345e3a95b2fb46 Serge Semin 2023-01-13 220 const struct dw_edma_debugfs_entry debugfs_unroll_regs[] = { 305aebeff8795c Gustavo Pimentel 2019-06-04 221 /* eDMA channel context grouping */ 305aebeff8795c Gustavo Pimentel 2019-06-04 222 RD_REGISTER_UNROLL(engine_chgroup), 04e0a39fc10f82 Gustavo Pimentel 2021-02-18 223 RD_REGISTER_UNROLL(engine_hshake_cnt.lsb), 04e0a39fc10f82 Gustavo Pimentel 2021-02-18 224 RD_REGISTER_UNROLL(engine_hshake_cnt.msb), 305aebeff8795c Gustavo Pimentel 2019-06-04 225 RD_REGISTER_UNROLL(ch0_pwr_en), 305aebeff8795c Gustavo Pimentel 2019-06-04 226 RD_REGISTER_UNROLL(ch1_pwr_en), 305aebeff8795c Gustavo Pimentel 2019-06-04 227 RD_REGISTER_UNROLL(ch2_pwr_en), 305aebeff8795c Gustavo Pimentel 2019-06-04 228 RD_REGISTER_UNROLL(ch3_pwr_en), 305aebeff8795c Gustavo Pimentel 2019-06-04 229 RD_REGISTER_UNROLL(ch4_pwr_en), 305aebeff8795c Gustavo Pimentel 2019-06-04 230 RD_REGISTER_UNROLL(ch5_pwr_en), 305aebeff8795c Gustavo Pimentel 2019-06-04 231 RD_REGISTER_UNROLL(ch6_pwr_en), 305aebeff8795c Gustavo Pimentel 2019-06-04 232 RD_REGISTER_UNROLL(ch7_pwr_en), 305aebeff8795c Gustavo Pimentel 2019-06-04 233 }; 95c55b7836f579 Serge Semin 2023-01-13 234 struct dentry *regs_dent, *ch_dent; 305aebeff8795c Gustavo Pimentel 2019-06-04 235 int nr_entries, i; 305aebeff8795c Gustavo Pimentel 2019-06-04 236 char name[16]; 305aebeff8795c Gustavo Pimentel 2019-06-04 237 95c55b7836f579 Serge Semin 2023-01-13 238 regs_dent = debugfs_create_dir(READ_STR, dent); 305aebeff8795c Gustavo Pimentel 2019-06-04 239 305aebeff8795c Gustavo Pimentel 2019-06-04 240 nr_entries = ARRAY_SIZE(debugfs_regs); 95c55b7836f579 Serge Semin 2023-01-13 241 dw_edma_debugfs_create_x32(debugfs_regs, nr_entries, regs_dent); 305aebeff8795c Gustavo Pimentel 2019-06-04 242 203184571388a9 Frank Li 2022-05-24 243 if (dw->chip->mf == EDMA_MF_HDMA_COMPAT) { 305aebeff8795c Gustavo Pimentel 2019-06-04 244 nr_entries = ARRAY_SIZE(debugfs_unroll_regs); 305aebeff8795c Gustavo Pimentel 2019-06-04 245 dw_edma_debugfs_create_x32(debugfs_unroll_regs, nr_entries, 95c55b7836f579 Serge Semin 2023-01-13 246 regs_dent); 305aebeff8795c Gustavo Pimentel 2019-06-04 247 } 305aebeff8795c Gustavo Pimentel 2019-06-04 248 305aebeff8795c Gustavo Pimentel 2019-06-04 249 for (i = 0; i < dw->rd_ch_cnt; i++) { 305aebeff8795c Gustavo Pimentel 2019-06-04 @250 snprintf(name, sizeof(name), "%s:%d", CHANNEL_STR, i); 305aebeff8795c Gustavo Pimentel 2019-06-04 251 95c55b7836f579 Serge Semin 2023-01-13 252 ch_dent = debugfs_create_dir(name, regs_dent); 305aebeff8795c Gustavo Pimentel 2019-06-04 253 00498167650b68 Serge Semin 2023-01-13 254 dw_edma_debugfs_regs_ch(EDMA_DIR_READ, i, ch_dent); 305aebeff8795c Gustavo Pimentel 2019-06-04 255 } 305aebeff8795c Gustavo Pimentel 2019-06-04 256 } 305aebeff8795c Gustavo Pimentel 2019-06-04 257 :::::: The code at line 250 was first introduced by commit :::::: 305aebeff8795cbf03b3f117e74bb702c130ae4c dmaengine: Add Synopsys eDMA IP version 0 debugfs support :::::: TO: Gustavo Pimentel :::::: CC: Vinod Koul -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki