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
From: kernel test robot
Date: Thu Nov 02 2023 - 12:56:27 EST
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@xxxxxxxxx/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@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/202311030041.DznTeuS5-lkp@xxxxxxxxx/
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 <Gustavo.Pimentel@xxxxxxxxxxxx>
:::::: CC: Vinod Koul <vkoul@xxxxxxxxxx>
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