CC: [email protected] CC: [email protected] CC: [email protected] TO: Emil Renner Berthing <[email protected]> CC: Andy Shevchenko <[email protected]> CC: Linus Walleij <[email protected]> CC: Huan Feng <[email protected]> CC: Drew Fustini <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 0280e3c58f92b2fe0e8fbbdf8d386449168de4a8 commit: ec648f6b7686b716424e8e73eebb4c11ae199187 pinctrl: starfive: Add pinctrl driver for StarFive SoCs date: 6 weeks ago :::::: branch date: 28 hours ago :::::: commit date: 6 weeks ago config: riscv-randconfig-c006-20220126 (https://download.01.org/0day-ci/archive/20220127/[email protected]/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 2a1b7aa016c0f4b5598806205bdfbab1ea2d92c4) 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=ec648f6b7686b716424e8e73eebb4c11ae199187 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout ec648f6b7686b716424e8e73eebb4c11ae199187 # 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/percpu-defs.h:421:34: note: expanded from macro 'raw_cpu_write' #define raw_cpu_write(pcp, val) __pcpu_size_call(raw_cpu_write_, pcp, val) ^ include/linux/percpu-defs.h:379:42: note: expanded from macro '__pcpu_size_call' case 4: stem##4(variable, __VA_ARGS__);break; \ ^ kernel/softirq.c:540:2: note: Loop condition is false. Exiting loop set_softirq_pending(0); ^ include/linux/interrupt.h:494:33: note: expanded from macro 'set_softirq_pending' #define set_softirq_pending(x) (__this_cpu_write(local_softirq_pending_ref, (x))) ^ include/linux/percpu-defs.h:452:2: note: expanded from macro '__this_cpu_write' raw_cpu_write(pcp, val); \ ^ include/linux/percpu-defs.h:421:34: note: expanded from macro 'raw_cpu_write' #define raw_cpu_write(pcp, val) __pcpu_size_call(raw_cpu_write_, pcp, val) ^ include/linux/percpu-defs.h:373:50: note: expanded from macro '__pcpu_size_call' #define __pcpu_size_call(stem, variable, ...) \ ^ kernel/softirq.c:542:2: note: Loop condition is false. Exiting loop local_irq_enable(); ^ include/linux/irqflags.h:235:28: note: expanded from macro 'local_irq_enable' #define local_irq_enable() do { raw_local_irq_enable(); } while (0) ^ kernel/softirq.c:546:2: note: Loop condition is true. Entering loop body while ((softirq_bit = ffs(pending))) { ^ kernel/softirq.c:552:3: note: The value 16 is assigned to 'vec_nr' vec_nr = h - softirq_vec; ^~~~~~~~~~~~~~~~~~~~~~~~ kernel/softirq.c:560:16: note: Assuming the condition is true if (unlikely(prev_count != preempt_count())) { ^ include/linux/compiler.h:78:42: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ kernel/softirq.c:560:3: note: Taking true branch if (unlikely(prev_count != preempt_count())) { ^ kernel/softirq.c:561:4: note: Loop condition is false. Exiting loop pr_err("huh, entered softirq %u %s %p with preempt_count %08x, exited with %08x?\n", ^ include/linux/printk.h:489:2: note: expanded from macro 'pr_err' printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) ^ include/linux/printk.h:446:26: note: expanded from macro 'printk' #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__) ^ include/linux/printk.h:417:3: note: expanded from macro 'printk_index_wrap' __printk_index_emit(_fmt, NULL, NULL); \ ^ include/linux/printk.h:392:34: note: expanded from macro '__printk_index_emit' #define __printk_index_emit(...) do {} while (0) ^ kernel/softirq.c:561:4: note: 3rd function call argument is an uninitialized value pr_err("huh, entered softirq %u %s %p with preempt_count %08x, exited with %08x?\n", ^ include/linux/printk.h:489:2: note: expanded from macro 'pr_err' printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) ^ ~~~~~~~~~~~ include/linux/printk.h:446:44: note: expanded from macro 'printk' #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__) ^ ~~~~~~~~~~~ include/linux/printk.h:418:3: note: expanded from macro 'printk_index_wrap' _p_func(_fmt, ##__VA_ARGS__); \ ^ ~~~~~~~~~~~ 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. 3 warnings generated. Suppressed 3 warnings (2 in non-user code, 1 with check filters). 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. 5 warnings generated. Suppressed 5 warnings (5 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. 5 warnings generated. Suppressed 5 warnings (5 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. 5 warnings generated. Suppressed 5 warnings (5 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. 5 warnings generated. Suppressed 5 warnings (5 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. 3 warnings generated. Suppressed 3 warnings (3 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. >> drivers/pinctrl/pinctrl-starfive.c:640:17: warning: Value stored to 'dev' >> during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct device *dev = sfp->gc.parent; ^~~ ~~~~~~~~~~~~~~ drivers/pinctrl/pinctrl-starfive.c:640:17: note: Value stored to 'dev' during its initialization is never read struct device *dev = sfp->gc.parent; ^~~ ~~~~~~~~~~~~~~ Suppressed 5 warnings (5 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. 5 warnings generated. Suppressed 5 warnings (5 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. 5 warnings generated. Suppressed 5 warnings (5 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. 5 warnings generated. Suppressed 5 warnings (5 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. 5 warnings generated. Suppressed 5 warnings (5 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. 5 warnings generated. Suppressed 5 warnings (5 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. 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. 9 warnings generated. fs/ntfs/compress.c:164:6: warning: Value stored to 'cb_sb_start' during its initialization is never read [clang-analyzer-deadcode.DeadStores] u8 *cb_sb_start = cb; /* Beginning of the current sb in the cb. */ ^~~~~~~~~~~ ~~ fs/ntfs/compress.c:164:6: note: Value stored to 'cb_sb_start' during its initialization is never read u8 *cb_sb_start = cb; /* Beginning of the current sb in the cb. */ ^~~~~~~~~~~ ~~ fs/ntfs/compress.c:810:4: warning: Value stored to 'cb_pos' is never read [clang-analyzer-deadcode.DeadStores] cb_pos += cb_max_ofs - cur_ofs; ^ ~~~~~~~~~~~~~~~~~~~~ fs/ntfs/compress.c:810:4: note: Value stored to 'cb_pos' is never read cb_pos += cb_max_ofs - cur_ofs; ^ ~~~~~~~~~~~~~~~~~~~~ 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. 5 warnings generated. Suppressed 5 warnings (5 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/ntfs/dir.c:1107:2: warning: Value stored to 'rc' is never read [clang-analyzer-deadcode.DeadStores] rc = err = 0; ^ ~~~~~~~ fs/ntfs/dir.c:1107:2: note: Value stored to 'rc' is never read rc = err = 0; ^ ~~~~~~~ fs/ntfs/dir.c:1306:36: warning: Access to field 'magic' results in a dereference of a null pointer (loaded from variable 'ia') [clang-analyzer-core.NullDereference] if (unlikely(!ntfs_is_indx_record(ia->magic))) { ^ fs/ntfs/layout.h:139:50: note: expanded from macro 'ntfs_is_indx_record' #define ntfs_is_indx_record(x) ( ntfs_is_magic (x, INDX) ) ^ fs/ntfs/layout.h:124:45: note: expanded from macro 'ntfs_is_magic' #define ntfs_is_magic(x, m) __ntfs_is_magic(x, magic_##m) ^ include/linux/compiler.h:78:42: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ fs/ntfs/dir.c:1105:2: note: Taking false branch ntfs_debug("Entering for inode 0x%lx, fpos 0x%llx.", ^ fs/ntfs/debug.h:39:2: note: expanded from macro 'ntfs_debug' if (0) \ ^ fs/ntfs/dir.c:1105:2: note: Loop condition is false. Exiting loop ntfs_debug("Entering for inode 0x%lx, fpos 0x%llx.", ^ fs/ntfs/debug.h:37:35: note: expanded from macro 'ntfs_debug' #define ntfs_debug(fmt, ...) \ ^ fs/ntfs/dir.c:1110:6: note: Assuming the condition is false if (actor->pos >= i_size + vol->mft_record_size) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/ntfs/dir.c:1110:2: note: Taking false branch if (actor->pos >= i_size + vol->mft_record_size) ^ fs/ntfs/dir.c:1113:7: note: Calling 'dir_emit_dots' if (!dir_emit_dots(file, actor)) ^~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/fs.h:3653:6: note: Assuming field 'pos' is not equal to 0 if (ctx->pos == 0) { ^~~~~~~~~~~~~ include/linux/fs.h:3653:2: note: Taking false branch if (ctx->pos == 0) { ^ include/linux/fs.h:3658:6: note: Assuming field 'pos' is not equal to 1 if (ctx->pos == 1) { ^~~~~~~~~~~~~ include/linux/fs.h:3658:2: note: Taking false branch if (ctx->pos == 1) { ^ include/linux/fs.h:3663:2: note: Returning the value 1, which participates in a condition later return true; vim +/dev +640 drivers/pinctrl/pinctrl-starfive.c ec648f6b7686b71 Emil Renner Berthing 2021-07-06 635 ec648f6b7686b71 Emil Renner Berthing 2021-07-06 636 static int starfive_set_mux(struct pinctrl_dev *pctldev, ec648f6b7686b71 Emil Renner Berthing 2021-07-06 637 unsigned int fsel, unsigned int gsel) ec648f6b7686b71 Emil Renner Berthing 2021-07-06 638 { ec648f6b7686b71 Emil Renner Berthing 2021-07-06 639 struct starfive_pinctrl *sfp = pinctrl_dev_get_drvdata(pctldev); ec648f6b7686b71 Emil Renner Berthing 2021-07-06 @640 struct device *dev = sfp->gc.parent; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 641 const struct group_desc *group; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 642 const u32 *pinmux; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 643 unsigned int i; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 644 ec648f6b7686b71 Emil Renner Berthing 2021-07-06 645 group = pinctrl_generic_get_group(pctldev, gsel); ec648f6b7686b71 Emil Renner Berthing 2021-07-06 646 if (!group) ec648f6b7686b71 Emil Renner Berthing 2021-07-06 647 return -EINVAL; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 648 ec648f6b7686b71 Emil Renner Berthing 2021-07-06 649 pinmux = group->data; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 650 for (i = 0; i < group->num_pins; i++) { ec648f6b7686b71 Emil Renner Berthing 2021-07-06 651 u32 v = pinmux[i]; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 652 unsigned int gpio = starfive_pinmux_to_gpio(v); ec648f6b7686b71 Emil Renner Berthing 2021-07-06 653 u32 dout = starfive_pinmux_to_dout(v); ec648f6b7686b71 Emil Renner Berthing 2021-07-06 654 u32 doen = starfive_pinmux_to_doen(v); ec648f6b7686b71 Emil Renner Berthing 2021-07-06 655 u32 din = starfive_pinmux_to_din(v); ec648f6b7686b71 Emil Renner Berthing 2021-07-06 656 void __iomem *reg_dout; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 657 void __iomem *reg_doen; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 658 void __iomem *reg_din; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 659 unsigned long flags; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 660 ec648f6b7686b71 Emil Renner Berthing 2021-07-06 661 dev_dbg(dev, "GPIO%u: dout=0x%x doen=0x%x din=0x%x\n", ec648f6b7686b71 Emil Renner Berthing 2021-07-06 662 gpio, dout, doen, din); ec648f6b7686b71 Emil Renner Berthing 2021-07-06 663 ec648f6b7686b71 Emil Renner Berthing 2021-07-06 664 reg_dout = sfp->base + GPON_DOUT_CFG + 8 * gpio; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 665 reg_doen = sfp->base + GPON_DOEN_CFG + 8 * gpio; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 666 if (din != GPI_NONE) ec648f6b7686b71 Emil Renner Berthing 2021-07-06 667 reg_din = sfp->base + GPI_CFG_OFFSET + 4 * din; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 668 else ec648f6b7686b71 Emil Renner Berthing 2021-07-06 669 reg_din = NULL; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 670 ec648f6b7686b71 Emil Renner Berthing 2021-07-06 671 raw_spin_lock_irqsave(&sfp->lock, flags); ec648f6b7686b71 Emil Renner Berthing 2021-07-06 672 writel_relaxed(dout, reg_dout); ec648f6b7686b71 Emil Renner Berthing 2021-07-06 673 writel_relaxed(doen, reg_doen); ec648f6b7686b71 Emil Renner Berthing 2021-07-06 674 if (reg_din) ec648f6b7686b71 Emil Renner Berthing 2021-07-06 675 writel_relaxed(gpio + 2, reg_din); ec648f6b7686b71 Emil Renner Berthing 2021-07-06 676 raw_spin_unlock_irqrestore(&sfp->lock, flags); ec648f6b7686b71 Emil Renner Berthing 2021-07-06 677 } ec648f6b7686b71 Emil Renner Berthing 2021-07-06 678 ec648f6b7686b71 Emil Renner Berthing 2021-07-06 679 return 0; ec648f6b7686b71 Emil Renner Berthing 2021-07-06 680 } ec648f6b7686b71 Emil Renner Berthing 2021-07-06 681 --- 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]
