Hi Oliver, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 881007522c8fcc3785c75432dbb149ca1b78e106 commit: 3b70464aa78917e88c1d4bfc2100c344c0eda8e0 powerpc/powernv: Staticify functions without prototypes date: 1 year, 3 months ago config: powerpc64-randconfig-s031-20211015 (attached as .config) compiler: powerpc64-linux-gcc (GCC) 11.2.0 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: v0.6.4-dirty # 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 3b70464aa78917e88c1d4bfc2100c344c0eda8e0 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=powerpc64 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 >>) arch/powerpc/platforms/powernv/vas-window.c:91:13: sparse: expected void *map arch/powerpc/platforms/powernv/vas-window.c:91:13: sparse: got void [noderef] __iomem * arch/powerpc/platforms/powernv/vas-window.c:116:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *map @@ got void [noderef] __iomem * @@ arch/powerpc/platforms/powernv/vas-window.c:116:13: sparse: expected void *map arch/powerpc/platforms/powernv/vas-window.c:116:13: sparse: got void [noderef] __iomem * arch/powerpc/platforms/powernv/vas-window.c:128:17: sparse: expected void volatile [noderef] __iomem *addr arch/powerpc/platforms/powernv/vas-window.c:128:17: sparse: got void *addr arch/powerpc/platforms/powernv/vas-window.c: note: in included file: arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:482:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long const volatile [noderef] [usertype] __iomem *addr @@ got void * @@ arch/powerpc/platforms/powernv/vas.h:482:37: sparse: expected unsigned long long const volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:482:37: sparse: got void * arch/powerpc/platforms/powernv/vas.h:482:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long const volatile [noderef] [usertype] __iomem *addr @@ got void * @@ arch/powerpc/platforms/powernv/vas.h:482:37: sparse: expected unsigned long long const volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:482:37: sparse: got void * arch/powerpc/platforms/powernv/vas.h:482:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long const volatile [noderef] [usertype] __iomem *addr @@ got void * @@ arch/powerpc/platforms/powernv/vas.h:482:37: sparse: expected unsigned long long const volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:482:37: sparse: got void * arch/powerpc/platforms/powernv/vas.h:482:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long const volatile [noderef] [usertype] __iomem *addr @@ got void * @@ arch/powerpc/platforms/powernv/vas.h:482:37: sparse: expected unsigned long long const volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:482:37: sparse: got void * arch/powerpc/platforms/powernv/vas.h:482:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long const volatile [noderef] [usertype] __iomem *addr @@ got void * @@ arch/powerpc/platforms/powernv/vas.h:482:37: sparse: expected unsigned long long const volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:482:37: sparse: got void * arch/powerpc/platforms/powernv/vas.h:482:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned long long const volatile [noderef] [usertype] __iomem *addr @@ got void * @@ arch/powerpc/platforms/powernv/vas.h:482:37: sparse: expected unsigned long long const volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:482:37: sparse: got void * arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: expected unsigned long long volatile [noderef] [usertype] __iomem *addr arch/powerpc/platforms/powernv/vas.h:476:18: sparse: got void *[assigned] regptr vim +91 arch/powerpc/platforms/powernv/vas-window.c 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 64 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 65 /* 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 66 * Map the paste bus address of the given send window into kernel address 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 67 * space. Unlike MMIO regions (map_mmio_region() below), paste region must 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 68 * be mapped cache-able and is only applicable to send windows. 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 69 */ 5239af679a0742 Sukadev Bhattiprolu 2017-08-28 70 static void *map_paste_region(struct vas_window *txwin) 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 71 { 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 72 int len; 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 73 void *map; 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 74 char *name; 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 75 u64 start; 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 76 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 77 name = kasprintf(GFP_KERNEL, "window-v%d-w%d", txwin->vinst->vas_id, 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 78 txwin->winid); 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 79 if (!name) 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 80 goto free_name; 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 81 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 82 txwin->paste_addr_name = name; dda44eb29c2357 Haren Myneni 2020-04-17 83 vas_win_paste_addr(txwin, &start, &len); 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 84 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 85 if (!request_mem_region(start, len, name)) { 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 86 pr_devel("%s(): request_mem_region(0x%llx, %d) failed\n", 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 87 __func__, start, len); 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 88 goto free_name; 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 89 } 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 90 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 @91 map = ioremap_cache(start, len); 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 92 if (!map) { 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 93 pr_devel("%s(): ioremap_cache(0x%llx, %d) failed\n", __func__, 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 94 start, len); 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 95 goto free_name; 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 96 } 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 97 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 98 pr_devel("Mapped paste addr 0x%llx to kaddr 0x%p\n", start, map); 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 99 return map; 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 100 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 101 free_name: 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 102 kfree(name); 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 103 return ERR_PTR(-ENOMEM); 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 104 } 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 105 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 106 static void *map_mmio_region(char *name, u64 start, int len) 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 107 { 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 108 void *map; 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 109 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 110 if (!request_mem_region(start, len, name)) { 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 111 pr_devel("%s(): request_mem_region(0x%llx, %d) failed\n", 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 112 __func__, start, len); 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 113 return NULL; 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 114 } 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 115 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 116 map = ioremap(start, len); 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 117 if (!map) { 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 118 pr_devel("%s(): ioremap(0x%llx, %d) failed\n", __func__, start, 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 119 len); 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 120 return NULL; 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 121 } 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 122 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 123 return map; 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 124 } 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 125 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 126 static void unmap_region(void *addr, u64 start, int len) 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 127 { 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 @128 iounmap(addr); 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 129 release_mem_region((phys_addr_t)start, len); 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 130 } 180fe15a8299c1 Sukadev Bhattiprolu 2017-08-28 131 :::::: The code at line 91 was first introduced by commit :::::: 180fe15a8299c14f77347c5835c98c2446226ee6 powerpc/powernv/vas: Define helpers to access MMIO regions :::::: TO: Sukadev Bhattiprolu <sukadev(a)linux.vnet.ibm.com&gt; :::::: CC: Michael Ellerman <mpe(a)ellerman.id.au&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org