From: kernel test robot <lkp@intel.com>
To: Anup Patel <apatel@ventanamicro.com>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
Conor Dooley <conor.dooley@microchip.com>
Subject: [avpatel:riscv_aia_v5 8/9] drivers/irqchip/irq-riscv-aplic.c:331:33: warning: shift count >= width of type
Date: Tue, 11 Jul 2023 00:56:46 +0800 [thread overview]
Message-ID: <202307110012.8gYgzLQE-lkp@intel.com> (raw)
Hi Anup,
First bad commit (maybe != root cause):
tree: https://github.com/avpatel/linux.git riscv_aia_v5
head: 004cfc621e239f8158c60a4fe22f93b849baf6fc
commit: 214fd2a70f2aee97ae042bdd2d8c0006ec2b7123 [8/9] RISC-V: Select APLIC and IMSIC drivers
config: riscv-randconfig-r042-20230710 (https://download.01.org/0day-ci/archive/20230711/202307110012.8gYgzLQE-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20230711/202307110012.8gYgzLQE-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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307110012.8gYgzLQE-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
584 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:743:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
743 | insb(addr, buffer, count);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
| ~~~~~~~~~~ ^
In file included from drivers/irqchip/irq-riscv-aplic.c:10:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:751:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
751 | insw(addr, buffer, count);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
| ~~~~~~~~~~ ^
In file included from drivers/irqchip/irq-riscv-aplic.c:10:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:759:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
759 | insl(addr, buffer, count);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
| ~~~~~~~~~~ ^
In file included from drivers/irqchip/irq-riscv-aplic.c:10:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:768:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
768 | outsb(addr, buffer, count);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
| ~~~~~~~~~~ ^
In file included from drivers/irqchip/irq-riscv-aplic.c:10:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:777:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
777 | outsw(addr, buffer, count);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
| ~~~~~~~~~~ ^
In file included from drivers/irqchip/irq-riscv-aplic.c:10:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:786:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
786 | outsl(addr, buffer, count);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
| ~~~~~~~~~~ ^
In file included from drivers/irqchip/irq-riscv-aplic.c:10:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:1134:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
1134 | return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
| ~~~~~~~~~~ ^
>> drivers/irqchip/irq-riscv-aplic.c:331:33: warning: shift count >= width of type [-Wshift-count-overflow]
331 | valH = (priv->msicfg.base_ppn >> 32) &
| ^ ~~
14 warnings generated.
vim +331 drivers/irqchip/irq-riscv-aplic.c
42e40bf36802c7 Anup Patel 2022-01-18 322
42e40bf36802c7 Anup Patel 2022-01-18 323 static void aplic_init_hw_global(struct aplic_priv *priv)
42e40bf36802c7 Anup Patel 2022-01-18 324 {
42e40bf36802c7 Anup Patel 2022-01-18 325 u32 val;
42e40bf36802c7 Anup Patel 2022-01-18 326 #ifdef CONFIG_RISCV_M_MODE
42e40bf36802c7 Anup Patel 2022-01-18 327 u32 valH;
42e40bf36802c7 Anup Patel 2022-01-18 328
42e40bf36802c7 Anup Patel 2022-01-18 329 if (!priv->nr_idcs) {
42e40bf36802c7 Anup Patel 2022-01-18 330 val = priv->msicfg.base_ppn;
42e40bf36802c7 Anup Patel 2022-01-18 @331 valH = (priv->msicfg.base_ppn >> 32) &
42e40bf36802c7 Anup Patel 2022-01-18 332 APLIC_xMSICFGADDRH_BAPPN_MASK;
42e40bf36802c7 Anup Patel 2022-01-18 333 valH |= (priv->msicfg.lhxw & APLIC_xMSICFGADDRH_LHXW_MASK)
42e40bf36802c7 Anup Patel 2022-01-18 334 << APLIC_xMSICFGADDRH_LHXW_SHIFT;
42e40bf36802c7 Anup Patel 2022-01-18 335 valH |= (priv->msicfg.hhxw & APLIC_xMSICFGADDRH_HHXW_MASK)
42e40bf36802c7 Anup Patel 2022-01-18 336 << APLIC_xMSICFGADDRH_HHXW_SHIFT;
42e40bf36802c7 Anup Patel 2022-01-18 337 valH |= (priv->msicfg.lhxs & APLIC_xMSICFGADDRH_LHXS_MASK)
42e40bf36802c7 Anup Patel 2022-01-18 338 << APLIC_xMSICFGADDRH_LHXS_SHIFT;
42e40bf36802c7 Anup Patel 2022-01-18 339 valH |= (priv->msicfg.hhxs & APLIC_xMSICFGADDRH_HHXS_MASK)
42e40bf36802c7 Anup Patel 2022-01-18 340 << APLIC_xMSICFGADDRH_HHXS_SHIFT;
42e40bf36802c7 Anup Patel 2022-01-18 341 writel(val, priv->regs + APLIC_xMSICFGADDR);
42e40bf36802c7 Anup Patel 2022-01-18 342 writel(valH, priv->regs + APLIC_xMSICFGADDRH);
42e40bf36802c7 Anup Patel 2022-01-18 343 }
42e40bf36802c7 Anup Patel 2022-01-18 344 #endif
42e40bf36802c7 Anup Patel 2022-01-18 345
42e40bf36802c7 Anup Patel 2022-01-18 346 /* Setup APLIC domaincfg register */
42e40bf36802c7 Anup Patel 2022-01-18 347 val = readl(priv->regs + APLIC_DOMAINCFG);
42e40bf36802c7 Anup Patel 2022-01-18 348 val |= APLIC_DOMAINCFG_IE;
42e40bf36802c7 Anup Patel 2022-01-18 349 if (!priv->nr_idcs)
42e40bf36802c7 Anup Patel 2022-01-18 350 val |= APLIC_DOMAINCFG_DM;
42e40bf36802c7 Anup Patel 2022-01-18 351 writel(val, priv->regs + APLIC_DOMAINCFG);
42e40bf36802c7 Anup Patel 2022-01-18 352 if (readl(priv->regs + APLIC_DOMAINCFG) != val)
42e40bf36802c7 Anup Patel 2022-01-18 353 pr_warn("%pfwP: unable to write 0x%x in domaincfg\n",
42e40bf36802c7 Anup Patel 2022-01-18 354 priv->fwnode, val);
42e40bf36802c7 Anup Patel 2022-01-18 355 }
42e40bf36802c7 Anup Patel 2022-01-18 356
:::::: The code at line 331 was first introduced by commit
:::::: 42e40bf36802c73c359dc37c729d26209aa3cea8 irqchip: Add RISC-V advanced PLIC driver
:::::: TO: Anup Patel <apatel@ventanamicro.com>
:::::: CC: Anup Patel <anup@brainfault.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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