CC: [email protected] CC: [email protected] BCC: [email protected] CC: [email protected] TO: Hannes Reinecke <[email protected]> CC: Damien Le Moal <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 2293be58d6a18cab800e25e42081bacb75c05752 commit: 742bef476ca5352b16063161fb73a56629a6d995 ata: libata: move ata_{port,link,dev}_dbg to standard pr_XXX() macros date: 8 weeks ago :::::: branch date: 15 hours ago :::::: commit date: 8 weeks ago config: riscv-randconfig-c006-20220222 (https://download.01.org/0day-ci/archive/20220227/[email protected]/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e) 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 # install riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=742bef476ca5352b16063161fb73a56629a6d995 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 742bef476ca5352b16063161fb73a56629a6d995 # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> clang-analyzer warnings: (new ones prefixed by >>) include/linux/dev_printk.h:150:2: note: expanded from macro 'dev_info' dev_printk_index_wrap(_dev_info, KERN_INFO, dev, dev_fmt(fmt), ##__VA_ARGS__) ^ include/linux/dev_printk.h:109:3: note: expanded from macro 'dev_printk_index_wrap' dev_printk_index_emit(level, fmt); \ ^ include/linux/dev_printk.h:105:2: note: expanded from macro 'dev_printk_index_emit' printk_index_subsys_emit("%s %s: ", level, fmt) ^ include/linux/printk.h:417:2: note: expanded from macro 'printk_index_subsys_emit' __printk_index_emit(fmt, level, subsys_fmt_prefix) ^ include/linux/printk.h:383:12: note: expanded from macro '__printk_index_emit' .fmt = __builtin_constant_p(_fmt) ? (_fmt) : NULL, \ ^ drivers/base/test/test_async_driver_probe.c:166:2: note: '?' condition is true dev_info(&(*pdev)->dev, ^ include/linux/dev_printk.h:150:2: note: expanded from macro 'dev_info' dev_printk_index_wrap(_dev_info, KERN_INFO, dev, dev_fmt(fmt), ##__VA_ARGS__) ^ include/linux/dev_printk.h:109:3: note: expanded from macro 'dev_printk_index_wrap' dev_printk_index_emit(level, fmt); \ ^ include/linux/dev_printk.h:105:2: note: expanded from macro 'dev_printk_index_emit' printk_index_subsys_emit("%s %s: ", level, fmt) ^ include/linux/printk.h:417:2: note: expanded from macro 'printk_index_subsys_emit' __printk_index_emit(fmt, level, subsys_fmt_prefix) ^ include/linux/printk.h:387:14: note: expanded from macro '__printk_index_emit' .level = __builtin_constant_p(_level) ? (_level) : NULL, \ ^ drivers/base/test/test_async_driver_probe.c:166:2: note: Loop condition is false. Exiting loop dev_info(&(*pdev)->dev, ^ include/linux/dev_printk.h:150:2: note: expanded from macro 'dev_info' dev_printk_index_wrap(_dev_info, KERN_INFO, dev, dev_fmt(fmt), ##__VA_ARGS__) ^ include/linux/dev_printk.h:109:3: note: expanded from macro 'dev_printk_index_wrap' dev_printk_index_emit(level, fmt); \ ^ include/linux/dev_printk.h:105:2: note: expanded from macro 'dev_printk_index_emit' printk_index_subsys_emit("%s %s: ", level, fmt) ^ include/linux/printk.h:417:2: note: expanded from macro 'printk_index_subsys_emit' __printk_index_emit(fmt, level, subsys_fmt_prefix) ^ include/linux/printk.h:373:2: note: expanded from macro '__printk_index_emit' do { \ ^ drivers/base/test/test_async_driver_probe.c:166:12: note: Dereference of null pointer (loaded from variable 'pdev') dev_info(&(*pdev)->dev, ^ include/linux/dev_printk.h:150:46: note: expanded from macro 'dev_info' dev_printk_index_wrap(_dev_info, KERN_INFO, dev, dev_fmt(fmt), ##__VA_ARGS__) ^~~ include/linux/dev_printk.h:110:11: note: expanded from macro 'dev_printk_index_wrap' _p_func(dev, fmt, ##__VA_ARGS__); \ ^~~ drivers/base/test/test_async_driver_probe.c:177:2: warning: Value stored to 'nid' is never read [clang-analyzer-deadcode.DeadStores] nid = cpu_to_node(cpu); ^ drivers/base/test/test_async_driver_probe.c:177:2: note: Value stored to 'nid' is never read Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. fs/gfs2/ops_fstype.c:852:2: warning: Value stored to 'jindex' is never read [clang-analyzer-deadcode.DeadStores] jindex = 0; ^ ~ fs/gfs2/ops_fstype.c:852:2: note: Value stored to 'jindex' is never read jindex = 0; ^ ~ Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. fs/gfs2/inode.c:1493:4: warning: Value stored to 'error' is never read [clang-analyzer-deadcode.DeadStores] error = 0; ^ ~ fs/gfs2/inode.c:1493:4: note: Value stored to 'error' is never read error = 0; ^ ~ fs/gfs2/inode.c:1558:3: warning: Value stored to 'error' is never read [clang-analyzer-deadcode.DeadStores] error = gfs2_unlink_inode(ndip, ndentry); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/gfs2/inode.c:1558:3: note: Value stored to 'error' is never read error = gfs2_unlink_inode(ndip, ndentry); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. fs/gfs2/quota.c:839:2: warning: Value stored to 'err' is never read [clang-analyzer-deadcode.DeadStores] err = -EIO; ^ ~~~~ fs/gfs2/quota.c:839:2: note: Value stored to 'err' is never read err = -EIO; ^ ~~~~ Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 10 warnings generated. >> drivers/ata/pata_amd.c:280:9: warning: Although the value stored to >> 'saved_udma' is used in the enclosing expression, the value is never >> actually read from 'saved_udma' [clang-analyzer-deadcode.DeadStores] udma = saved_udma = (unsigned long)ap->host->private_data; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/ata/pata_amd.c:280:9: note: Although the value stored to 'saved_udma' is used in the enclosing expression, the value is never actually read from 'saved_udma' udma = saved_udma = (unsigned long)ap->host->private_data; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 15 warnings generated. kernel/rcu/tree.c:279:2: warning: Value stored to 'seq' is never read [clang-analyzer-deadcode.DeadStores] seq = rcu_dynticks_inc(1); ^ ~~~~~~~~~~~~~~~~~~~ kernel/rcu/tree.c:279:2: note: Value stored to 'seq' is never read seq = rcu_dynticks_inc(1); ^ ~~~~~~~~~~~~~~~~~~~ kernel/rcu/tree.c:298:2: warning: Value stored to 'seq' is never read [clang-analyzer-deadcode.DeadStores] seq = rcu_dynticks_inc(1); ^ ~~~~~~~~~~~~~~~~~~~ kernel/rcu/tree.c:298:2: note: Value stored to 'seq' is never read seq = rcu_dynticks_inc(1); ^ ~~~~~~~~~~~~~~~~~~~ Suppressed 13 warnings (13 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. drivers/i2c/algos/i2c-algo-pca.c:195:10: warning: Although the value stored to 'state' is used in the enclosing expression, the value is never actually read from 'state' [clang-analyzer-deadcode.DeadStores] while ((state = pca_status(adap)) != 0xf8) { ^ drivers/i2c/algos/i2c-algo-pca.c:195:10: note: Although the value stored to 'state' is used in the enclosing expression, the value is never actually read from 'state' Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. drivers/regulator/core.c:3792:3: warning: Value stored to 'possible_uV' is never read [clang-analyzer-deadcode.DeadStores] vim +280 drivers/ata/pata_amd.c 669a5db411d85a Jeff Garzik 2006-08-29 260 ce54d161630211 Tejun Heo 2007-12-18 261 /* Both host-side and drive-side detection results are worthless on NV ce54d161630211 Tejun Heo 2007-12-18 262 * PATAs. Ignore them and just follow what BIOS configured. Both the ce54d161630211 Tejun Heo 2007-12-18 263 * current configuration in PCI config reg and ACPI GTM result are ce54d161630211 Tejun Heo 2007-12-18 264 * cached during driver attach and are consulted to select transfer ce54d161630211 Tejun Heo 2007-12-18 265 * mode. ce54d161630211 Tejun Heo 2007-12-18 266 */ ce54d161630211 Tejun Heo 2007-12-18 267 static unsigned long nv_mode_filter(struct ata_device *dev, ce54d161630211 Tejun Heo 2007-12-18 268 unsigned long xfer_mask) ce54d161630211 Tejun Heo 2007-12-18 269 { ce54d161630211 Tejun Heo 2007-12-18 270 static const unsigned int udma_mask_map[] = ce54d161630211 Tejun Heo 2007-12-18 271 { ATA_UDMA2, ATA_UDMA1, ATA_UDMA0, 0, ce54d161630211 Tejun Heo 2007-12-18 272 ATA_UDMA3, ATA_UDMA4, ATA_UDMA5, ATA_UDMA6 }; ce54d161630211 Tejun Heo 2007-12-18 273 struct ata_port *ap = dev->link->ap; ce54d161630211 Tejun Heo 2007-12-18 274 char acpi_str[32] = ""; ce54d161630211 Tejun Heo 2007-12-18 275 u32 saved_udma, udma; ce54d161630211 Tejun Heo 2007-12-18 276 const struct ata_acpi_gtm *gtm; ce54d161630211 Tejun Heo 2007-12-18 277 unsigned long bios_limit = 0, acpi_limit = 0, limit; ce54d161630211 Tejun Heo 2007-12-18 278 ce54d161630211 Tejun Heo 2007-12-18 279 /* find out what BIOS configured */ ce54d161630211 Tejun Heo 2007-12-18 @280 udma = saved_udma = (unsigned long)ap->host->private_data; ce54d161630211 Tejun Heo 2007-12-18 281 ce54d161630211 Tejun Heo 2007-12-18 282 if (ap->port_no == 0) ce54d161630211 Tejun Heo 2007-12-18 283 udma >>= 16; ce54d161630211 Tejun Heo 2007-12-18 284 if (dev->devno == 0) ce54d161630211 Tejun Heo 2007-12-18 285 udma >>= 8; ce54d161630211 Tejun Heo 2007-12-18 286 ce54d161630211 Tejun Heo 2007-12-18 287 if ((udma & 0xc0) == 0xc0) ce54d161630211 Tejun Heo 2007-12-18 288 bios_limit = ata_pack_xfermask(0, 0, udma_mask_map[udma & 0x7]); ce54d161630211 Tejun Heo 2007-12-18 289 ce54d161630211 Tejun Heo 2007-12-18 290 /* consult ACPI GTM too */ ce54d161630211 Tejun Heo 2007-12-18 291 gtm = ata_acpi_init_gtm(ap); ce54d161630211 Tejun Heo 2007-12-18 292 if (gtm) { ce54d161630211 Tejun Heo 2007-12-18 293 acpi_limit = ata_acpi_gtm_xfermask(dev, gtm); ce54d161630211 Tejun Heo 2007-12-18 294 ce54d161630211 Tejun Heo 2007-12-18 295 snprintf(acpi_str, sizeof(acpi_str), " (%u:%u:0x%x)", ce54d161630211 Tejun Heo 2007-12-18 296 gtm->drive[0].dma, gtm->drive[1].dma, gtm->flags); ce54d161630211 Tejun Heo 2007-12-18 297 } ce54d161630211 Tejun Heo 2007-12-18 298 ce54d161630211 Tejun Heo 2007-12-18 299 /* be optimistic, EH can take care of things if something goes wrong */ ce54d161630211 Tejun Heo 2007-12-18 300 limit = bios_limit | acpi_limit; ce54d161630211 Tejun Heo 2007-12-18 301 ce54d161630211 Tejun Heo 2007-12-18 302 /* If PIO or DMA isn't configured at all, don't limit. Let EH ce54d161630211 Tejun Heo 2007-12-18 303 * handle it. ce54d161630211 Tejun Heo 2007-12-18 304 */ ce54d161630211 Tejun Heo 2007-12-18 305 if (!(limit & ATA_MASK_PIO)) ce54d161630211 Tejun Heo 2007-12-18 306 limit |= ATA_MASK_PIO; ce54d161630211 Tejun Heo 2007-12-18 307 if (!(limit & (ATA_MASK_MWDMA | ATA_MASK_UDMA))) ce54d161630211 Tejun Heo 2007-12-18 308 limit |= ATA_MASK_MWDMA | ATA_MASK_UDMA; 90950a2504b66d Robert Hancock 2009-09-12 309 /* PIO4, MWDMA2, UDMA2 should always be supported regardless of 90950a2504b66d Robert Hancock 2009-09-12 310 cable detection result */ 90950a2504b66d Robert Hancock 2009-09-12 311 limit |= ata_pack_xfermask(ATA_PIO4, ATA_MWDMA2, ATA_UDMA2); ce54d161630211 Tejun Heo 2007-12-18 312 a9a79dfec23956 Joe Perches 2011-04-15 313 ata_port_dbg(ap, "nv_mode_filter: 0x%lx&0x%lx->0x%lx, " ce54d161630211 Tejun Heo 2007-12-18 314 "BIOS=0x%lx (0x%x) ACPI=0x%lx%s\n", ce54d161630211 Tejun Heo 2007-12-18 315 xfer_mask, limit, xfer_mask & limit, bios_limit, ce54d161630211 Tejun Heo 2007-12-18 316 saved_udma, acpi_limit, acpi_str); ce54d161630211 Tejun Heo 2007-12-18 317 ce54d161630211 Tejun Heo 2007-12-18 318 return xfer_mask & limit; ce54d161630211 Tejun Heo 2007-12-18 319 } 669a5db411d85a Jeff Garzik 2006-08-29 320 :::::: The code at line 280 was first introduced by commit :::::: ce54d1616302117fa98513ae916bb3333e1c02ea pata_amd: update mode selection for NV PATAs :::::: TO: Tejun Heo <[email protected]> :::::: CC: Jeff Garzik <[email protected]> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected] _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
