drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:40:17: sparse: sparse: cast removes address space '__iomem' of expression
From: kernel test robot
Date: Thu Jan 13 2022 - 12:42:27 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 455e73a07f6e288b0061dfcf4fcf54fa9fe06458
commit: 57cbdbe65e5f9ba9bfd67b66bc3ce24ef1c54643 drm/nouveau/kms/nv140-: Use hard-coded wndws or core channel for CRC channel
date: 9 weeks ago
config: sparc64-randconfig-s032-20220113 (https://download.01.org/0day-ci/archive/20220114/202201140142.b2CYChpW-lkp@xxxxxxxxx/config)
compiler: sparc64-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/?id=57cbdbe65e5f9ba9bfd67b66bc3ce24ef1c54643
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 57cbdbe65e5f9ba9bfd67b66bc3ce24ef1c54643
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sparc64 SHELL=/bin/bash drivers/gpu/drm/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:40:17: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:40:17: sparse: sparse: cast removes address space '__iomem' of expression
drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:41:17: sparse: sparse: cast removes address space '__iomem' of expression
drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:41:17: sparse: sparse: cast removes address space '__iomem' of expression
drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:43:17: sparse: sparse: cast removes address space '__iomem' of expression
drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:43:17: sparse: sparse: cast removes address space '__iomem' of expression
drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:44:17: sparse: sparse: cast removes address space '__iomem' of expression
drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:44:17: sparse: sparse: cast removes address space '__iomem' of expression
vim +/__iomem +40 drivers/gpu/drm/nouveau/dispnv50/crcc57d.c
12
13 static int crcc57d_set_src(struct nv50_head *head, int or, enum nv50_crc_source_type source,
14 struct nv50_crc_notifier_ctx *ctx)
15 {
16 struct nvif_push *push = nv50_disp(head->base.base.dev)->core->chan.push;
17 const int i = head->base.index;
18 u32 crc_args = NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, CONTROLLING_CHANNEL, CORE) |
19 NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, EXPECT_BUFFER_COLLAPSE, FALSE) |
20 NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, SECONDARY_CRC, NONE) |
21 NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, CRC_DURING_SNOOZE, DISABLE);
22 int ret;
23
24 switch (source) {
25 case NV50_CRC_SOURCE_TYPE_SOR:
26 crc_args |= NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, PRIMARY_CRC, SOR(or));
27 break;
28 case NV50_CRC_SOURCE_TYPE_SF:
29 crc_args |= NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, PRIMARY_CRC, SF);
30 break;
31 default:
32 break;
33 }
34
35 ret = PUSH_WAIT(push, 4);
36 if (ret)
37 return ret;
38
39 if (source) {
> 40 PUSH_MTHD(push, NVC57D, HEAD_SET_CONTEXT_DMA_CRC(i), ctx->ntfy.handle);
41 PUSH_MTHD(push, NVC57D, HEAD_SET_CRC_CONTROL(i), crc_args);
42 } else {
43 PUSH_MTHD(push, NVC57D, HEAD_SET_CRC_CONTROL(i), 0);
44 PUSH_MTHD(push, NVC57D, HEAD_SET_CONTEXT_DMA_CRC(i), 0);
45 }
46
47 return 0;
48 }
49
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx