[drm-msm:msm-next 9/29] drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c:904:28: warning: variable 'top' set but not used
From: kernel test robot
Date: Fri Jul 08 2022 - 23:40:42 EST
tree: https://gitlab.freedesktop.org/drm/msm.git msm-next
head: cb77085b1f0a86ef9dfba86b5f3ed6c3340c2ea3
commit: 9403f9a42c881d59396a454347540108d787685f [9/29] drm/msm/dpu: merge base_off with blk_off in struct dpu_hw_blk_reg_map
config: arm-defconfig (https://download.01.org/0day-ci/archive/20220709/202207091145.lpVXwHu5-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.3.0
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
git remote add drm-msm https://gitlab.freedesktop.org/drm/msm.git
git fetch --no-tags drm-msm msm-next
git checkout 9403f9a42c881d59396a454347540108d787685f
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/gpu/drm/msm/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All warnings (new ones prefixed by >>):
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c: In function 'dpu_kms_mdp_snapshot':
>> drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c:904:28: warning: variable 'top' set but not used [-Wunused-but-set-variable]
904 | struct dpu_hw_mdp *top;
| ^~~
vim +/top +904 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
220b856a3d3742 Tanmay Shah 2020-08-27 898
eb9d6c7ebe44df Dmitry Baryshkov 2021-04-27 899 static void dpu_kms_mdp_snapshot(struct msm_disp_state *disp_state, struct msm_kms *kms)
a698b5cdfe6366 Abhinav Kumar 2021-04-16 900 {
a698b5cdfe6366 Abhinav Kumar 2021-04-16 901 int i;
a698b5cdfe6366 Abhinav Kumar 2021-04-16 902 struct dpu_kms *dpu_kms;
3208496720a180 Dmitry Baryshkov 2022-06-02 903 const struct dpu_mdss_cfg *cat;
a698b5cdfe6366 Abhinav Kumar 2021-04-16 @904 struct dpu_hw_mdp *top;
a698b5cdfe6366 Abhinav Kumar 2021-04-16 905
a698b5cdfe6366 Abhinav Kumar 2021-04-16 906 dpu_kms = to_dpu_kms(kms);
a698b5cdfe6366 Abhinav Kumar 2021-04-16 907
a698b5cdfe6366 Abhinav Kumar 2021-04-16 908 cat = dpu_kms->catalog;
a698b5cdfe6366 Abhinav Kumar 2021-04-16 909 top = dpu_kms->hw_mdp;
a698b5cdfe6366 Abhinav Kumar 2021-04-16 910
a698b5cdfe6366 Abhinav Kumar 2021-04-16 911 pm_runtime_get_sync(&dpu_kms->pdev->dev);
a698b5cdfe6366 Abhinav Kumar 2021-04-16 912
a698b5cdfe6366 Abhinav Kumar 2021-04-16 913 /* dump CTL sub-blocks HW regs info */
a698b5cdfe6366 Abhinav Kumar 2021-04-16 914 for (i = 0; i < cat->ctl_count; i++)
a698b5cdfe6366 Abhinav Kumar 2021-04-16 915 msm_disp_snapshot_add_block(disp_state, cat->ctl[i].len,
a698b5cdfe6366 Abhinav Kumar 2021-04-16 916 dpu_kms->mmio + cat->ctl[i].base, "ctl_%d", i);
a698b5cdfe6366 Abhinav Kumar 2021-04-16 917
a698b5cdfe6366 Abhinav Kumar 2021-04-16 918 /* dump DSPP sub-blocks HW regs info */
a698b5cdfe6366 Abhinav Kumar 2021-04-16 919 for (i = 0; i < cat->dspp_count; i++)
a698b5cdfe6366 Abhinav Kumar 2021-04-16 920 msm_disp_snapshot_add_block(disp_state, cat->dspp[i].len,
a698b5cdfe6366 Abhinav Kumar 2021-04-16 921 dpu_kms->mmio + cat->dspp[i].base, "dspp_%d", i);
a698b5cdfe6366 Abhinav Kumar 2021-04-16 922
a698b5cdfe6366 Abhinav Kumar 2021-04-16 923 /* dump INTF sub-blocks HW regs info */
a698b5cdfe6366 Abhinav Kumar 2021-04-16 924 for (i = 0; i < cat->intf_count; i++)
a698b5cdfe6366 Abhinav Kumar 2021-04-16 925 msm_disp_snapshot_add_block(disp_state, cat->intf[i].len,
a698b5cdfe6366 Abhinav Kumar 2021-04-16 926 dpu_kms->mmio + cat->intf[i].base, "intf_%d", i);
a698b5cdfe6366 Abhinav Kumar 2021-04-16 927
a698b5cdfe6366 Abhinav Kumar 2021-04-16 928 /* dump PP sub-blocks HW regs info */
a698b5cdfe6366 Abhinav Kumar 2021-04-16 929 for (i = 0; i < cat->pingpong_count; i++)
a698b5cdfe6366 Abhinav Kumar 2021-04-16 930 msm_disp_snapshot_add_block(disp_state, cat->pingpong[i].len,
a698b5cdfe6366 Abhinav Kumar 2021-04-16 931 dpu_kms->mmio + cat->pingpong[i].base, "pingpong_%d", i);
a698b5cdfe6366 Abhinav Kumar 2021-04-16 932
a698b5cdfe6366 Abhinav Kumar 2021-04-16 933 /* dump SSPP sub-blocks HW regs info */
a698b5cdfe6366 Abhinav Kumar 2021-04-16 934 for (i = 0; i < cat->sspp_count; i++)
a698b5cdfe6366 Abhinav Kumar 2021-04-16 935 msm_disp_snapshot_add_block(disp_state, cat->sspp[i].len,
a698b5cdfe6366 Abhinav Kumar 2021-04-16 936 dpu_kms->mmio + cat->sspp[i].base, "sspp_%d", i);
a698b5cdfe6366 Abhinav Kumar 2021-04-16 937
3a905438887bf0 Abhinav Kumar 2021-12-15 938 /* dump LM sub-blocks HW regs info */
3a905438887bf0 Abhinav Kumar 2021-12-15 939 for (i = 0; i < cat->mixer_count; i++)
3a905438887bf0 Abhinav Kumar 2021-12-15 940 msm_disp_snapshot_add_block(disp_state, cat->mixer[i].len,
3a905438887bf0 Abhinav Kumar 2021-12-15 941 dpu_kms->mmio + cat->mixer[i].base, "lm_%d", i);
3a905438887bf0 Abhinav Kumar 2021-12-15 942
4448d59104151c Abhinav Kumar 2022-04-26 943 /* dump WB sub-blocks HW regs info */
4448d59104151c Abhinav Kumar 2022-04-26 944 for (i = 0; i < cat->wb_count; i++)
4448d59104151c Abhinav Kumar 2022-04-26 945 msm_disp_snapshot_add_block(disp_state, cat->wb[i].len,
4448d59104151c Abhinav Kumar 2022-04-26 946 dpu_kms->mmio + cat->wb[i].base, "wb_%d", i);
4448d59104151c Abhinav Kumar 2022-04-26 947
1e5df24b996c1c Dmitry Baryshkov 2022-06-01 948 msm_disp_snapshot_add_block(disp_state, cat->mdp[0].len,
9403f9a42c881d Dmitry Baryshkov 2022-06-01 949 dpu_kms->mmio + cat->mdp[0].base, "top");
a698b5cdfe6366 Abhinav Kumar 2021-04-16 950
a698b5cdfe6366 Abhinav Kumar 2021-04-16 951 pm_runtime_put_sync(&dpu_kms->pdev->dev);
a698b5cdfe6366 Abhinav Kumar 2021-04-16 952 }
a698b5cdfe6366 Abhinav Kumar 2021-04-16 953
:::::: The code at line 904 was first introduced by commit
:::::: a698b5cdfe63663dc6d5cb4c19109cd9757f8daf drm/msm/disp/dpu1: add API to take DPU register snapshot
:::::: TO: Abhinav Kumar <abhinavk@xxxxxxxxxxxxxx>
:::::: CC: Rob Clark <robdclark@xxxxxxxxxxxx>
--
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https://01.org/lkp