tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: d012a7190fc1fd72ed48911e77ca97ba4521bccd commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces date: 10 weeks ago config: riscv-randconfig-s032-20200824 (attached as .config) compiler: riscv64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-191-g10164920-dirty git checkout 670d0a4b10704667765f7d18f7592993d02783aa # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/ata/pata_cmd64x.c:283:22: sparse: got void * drivers/ata/pata_cmd64x.c:305:20: sparse: sparse: cast removes address space '__iomem' of expression drivers/ata/pata_cmd64x.c:305:20: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@ drivers/ata/pata_cmd64x.c:305:20: sparse: expected void const volatile [noderef] __iomem *addr drivers/ata/pata_cmd64x.c:305:20: sparse: got void * drivers/ata/pata_cmd64x.c:307:9: sparse: sparse: cast removes address space '__iomem' of expression drivers/ata/pata_cmd64x.c:307:9: sparse: got void * -- drivers/ata/pata_cypress.c:106:9: sparse: got void * drivers/ata/pata_cypress.c:107:9: sparse: sparse: cast removes address space '__iomem' of expression drivers/ata/pata_cypress.c:107:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void * @@ drivers/ata/pata_cypress.c:107:9: sparse: expected void volatile [noderef] __iomem *addr drivers/ata/pata_cypress.c:107:9: sparse: got void * drivers/ata/pata_cypress.c:110:9: sparse: sparse: cast removes address space '__iomem' of expression drivers/ata/pata_cypress.c:110:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void * @@ drivers/ata/pata_cypress.c:110:9: sparse: expected void volatile [noderef] __iomem *addr drivers/ata/pata_cypress.c:110:9: sparse: got void * drivers/ata/pata_cypress.c:111:9: sparse: sparse: cast removes address space '__iomem' of expression drivers/ata/pata_cypress.c:111:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void * @@ drivers/ata/pata_cypress.c:111:9: sparse: expected void volatile [noderef] __iomem *addr drivers/ata/pata_cypress.c:111:9: sparse: got void * -- drivers/ata/pata_optidma.c:379:9: sparse: got void * drivers/ata/pata_optidma.c:381:14: sparse: sparse: cast removes address space '__iomem' of expression drivers/ata/pata_optidma.c:381:14: sparse: got void * drivers/ata/pata_optidma.c:423:9: sparse: sparse: cast removes address space '__iomem' of expression drivers/ata/pata_optidma.c:423:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@ drivers/ata/pata_optidma.c:423:9: sparse: expected void const volatile [noderef] __iomem *addr drivers/ata/pata_optidma.c:423:9: sparse: got void * drivers/ata/pata_optidma.c:424:9: sparse: sparse: cast removes address space '__iomem' of expression drivers/ata/pata_optidma.c:424:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@ drivers/ata/pata_optidma.c:424:9: sparse: expected void const volatile [noderef] __iomem *addr drivers/ata/pata_optidma.c:424:9: sparse: got void * drivers/ata/pata_optidma.c:425:21: sparse: sparse: cast removes address space '__iomem' of expression drivers/ata/pata_optidma.c:425:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@ drivers/ata/pata_optidma.c:425:21: sparse: expected void const volatile [noderef] __iomem *addr drivers/ata/pata_optidma.c:425:21: sparse: got void * -- drivers/media/radio/radio-maxiradio.c:94:9: sparse: got void * drivers/media/radio/radio-maxiradio.c:102:19: sparse: sparse: cast removes address space '__iomem' of expression drivers/media/radio/radio-maxiradio.c:102:19: sparse: got void * drivers/media/radio/radio-maxiradio.c:184:9: sparse: sparse: cast removes address space '__iomem' of expression drivers/media/radio/radio-maxiradio.c:184:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void * @@ drivers/media/radio/radio-maxiradio.c:184:9: sparse: expected void volatile [noderef] __iomem *addr drivers/media/radio/radio-maxiradio.c:184:9: sparse: got void * -- drivers/video/fbdev/nvidia/nvidia.c:1411:20: sparse: got unsigned int volatile [noderef] [usertype] __iomem *REGS drivers/video/fbdev/nvidia/nvidia.c:1436:20: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected void [noderef] __iomem *addr @@ got unsigned int volatile [noderef] [usertype] __iomem *REGS @@ drivers/video/fbdev/nvidia/nvidia.c:1436:20: sparse: expected void [noderef] __iomem *addr drivers/video/fbdev/nvidia/nvidia.c:1436:20: sparse: got unsigned int volatile [noderef] [usertype] __iomem *REGS # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 670d0a4b10704667765f7d18f7592993d02783aa vim +/__iomem +283 drivers/ata/pata_cmd64x.c 8a686bc984454c Sergei Shtylyov 2012-03-11 270 b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 271 /** b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 272 * cmd648_sff_irq_check - check IDE interrupt b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 273 * @ap: ATA interface b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 274 * b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 275 * Check IDE interrupt in MRDMODE register. b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 276 */ b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 277 b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 278 static bool cmd648_sff_irq_check(struct ata_port *ap) b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 279 { b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 280 struct pci_dev *pdev = to_pci_dev(ap->host->dev); b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 281 unsigned long base = pci_resource_start(pdev, 4); b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 282 int irq_mask = ap->port_no ? MRDMODE_INTR_CH1 : MRDMODE_INTR_CH0; b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 @283 u8 mrdmode = inb(base + 1); b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 284 b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 285 return mrdmode & irq_mask; b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 286 } b8cec3c253a2a0 Sergei Shtylyov 2012-03-11 287 8a686bc984454c Sergei Shtylyov 2012-03-11 288 /** 419fd2461354f7 Sergei Shtylyov 2012-03-11 289 * cmd648_sff_irq_clear - clear IDE interrupt 419fd2461354f7 Sergei Shtylyov 2012-03-11 290 * @ap: ATA interface 669a5db411d85a Jeff Garzik 2006-08-29 291 * 419fd2461354f7 Sergei Shtylyov 2012-03-11 292 * Clear IDE interrupt in MRDMODE and DMA status registers. 669a5db411d85a Jeff Garzik 2006-08-29 293 */ 669a5db411d85a Jeff Garzik 2006-08-29 294 419fd2461354f7 Sergei Shtylyov 2012-03-11 295 static void cmd648_sff_irq_clear(struct ata_port *ap) 669a5db411d85a Jeff Garzik 2006-08-29 296 { 669a5db411d85a Jeff Garzik 2006-08-29 297 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 8a686bc984454c Sergei Shtylyov 2012-03-11 298 unsigned long base = pci_resource_start(pdev, 4); 8a686bc984454c Sergei Shtylyov 2012-03-11 299 int irq_mask = ap->port_no ? MRDMODE_INTR_CH1 : MRDMODE_INTR_CH0; 8a686bc984454c Sergei Shtylyov 2012-03-11 300 u8 mrdmode; 669a5db411d85a Jeff Garzik 2006-08-29 301 419fd2461354f7 Sergei Shtylyov 2012-03-11 302 ata_bmdma_irq_clear(ap); 669a5db411d85a Jeff Garzik 2006-08-29 303 8a686bc984454c Sergei Shtylyov 2012-03-11 304 /* Clear this port's interrupt bit (leaving the other port alone) */ 8a686bc984454c Sergei Shtylyov 2012-03-11 305 mrdmode = inb(base + 1); 8a686bc984454c Sergei Shtylyov 2012-03-11 306 mrdmode &= ~(MRDMODE_INTR_CH0 | MRDMODE_INTR_CH1); 8a686bc984454c Sergei Shtylyov 2012-03-11 @307 outb(mrdmode | irq_mask, base + 1); 669a5db411d85a Jeff Garzik 2006-08-29 308 } 669a5db411d85a Jeff Garzik 2006-08-29 309 :::::: The code at line 283 was first introduced by commit :::::: b8cec3c253a2a001e463c43260fb75fb3223a04d pata_cmd64x: implement sff_irq_check() method :::::: TO: Sergei Shtylyov <sshtylyov(a)ru.mvista.com&gt; :::::: CC: Jeff Garzik <jgarzik(a)redhat.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org