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Subjectdrivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c:1229:7: error: implicit declaration of function 'msm_dp_display_pre_disable'
Hi Kuogee,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 3cea11cd5e3b00d91caf0b4730194039b45c5891
commit: 8ede2ecc3e5ee327923f6e3cfe52761ce73607d1 drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets
date: 7 weeks ago
config: arm64-randconfig-r022-20201101 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 235dfcf70abca65dba5d80f1a42d1485bab8980c)
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
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8ede2ecc3e5ee327923f6e3cfe52761ce73607d1
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 8ede2ecc3e5ee327923f6e3cfe52761ce73607d1
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c:1229:7: error: implicit declaration of function 'msm_dp_display_pre_disable' [-Werror,-Wimplicit-function-declaration]
if (msm_dp_display_pre_disable(priv->dp, drm_enc))
^
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c:1229:7: note: did you mean 'msm_dp_display_disable'?
drivers/gpu/drm/msm/msm_drv.h:420:19: note: 'msm_dp_display_disable' declared here
static inline int msm_dp_display_disable(struct msm_dp *dp,
^
1 error generated.

vim +/msm_dp_display_pre_disable +1229 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c

1198
1199 static void dpu_encoder_virt_disable(struct drm_encoder *drm_enc)
1200 {
1201 struct dpu_encoder_virt *dpu_enc = NULL;
1202 struct msm_drm_private *priv;
1203 struct dpu_kms *dpu_kms;
1204 int i = 0;
1205
1206 if (!drm_enc) {
1207 DPU_ERROR("invalid encoder\n");
1208 return;
1209 } else if (!drm_enc->dev) {
1210 DPU_ERROR("invalid dev\n");
1211 return;
1212 }
1213
1214 dpu_enc = to_dpu_encoder_virt(drm_enc);
1215 DPU_DEBUG_ENC(dpu_enc, "\n");
1216
1217 mutex_lock(&dpu_enc->enc_lock);
1218 dpu_enc->enabled = false;
1219
1220 priv = drm_enc->dev->dev_private;
1221 dpu_kms = to_dpu_kms(priv->kms);
1222
1223 trace_dpu_enc_disable(DRMID(drm_enc));
1224
1225 /* wait for idle */
1226 dpu_encoder_wait_for_event(drm_enc, MSM_ENC_TX_COMPLETE);
1227
1228 if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS && priv->dp) {
> 1229 if (msm_dp_display_pre_disable(priv->dp, drm_enc))
1230 DPU_ERROR_ENC(dpu_enc, "dp display push idle failed\n");
1231 }
1232
1233 dpu_encoder_resource_control(drm_enc, DPU_ENC_RC_EVENT_PRE_STOP);
1234
1235 for (i = 0; i < dpu_enc->num_phys_encs; i++) {
1236 struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i];
1237
1238 if (phys->ops.disable)
1239 phys->ops.disable(phys);
1240 }
1241
1242
1243 /* after phys waits for frame-done, should be no more frames pending */
1244 if (atomic_xchg(&dpu_enc->frame_done_timeout_ms, 0)) {
1245 DPU_ERROR("enc%d timeout pending\n", drm_enc->base.id);
1246 del_timer_sync(&dpu_enc->frame_done_timer);
1247 }
1248
1249 dpu_encoder_resource_control(drm_enc, DPU_ENC_RC_EVENT_STOP);
1250
1251 for (i = 0; i < dpu_enc->num_phys_encs; i++) {
1252 dpu_enc->phys_encs[i]->connector = NULL;
1253 }
1254
1255 DPU_DEBUG_ENC(dpu_enc, "encoder disabled\n");
1256
1257 if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS && priv->dp) {
1258 if (msm_dp_display_disable(priv->dp, drm_enc))
1259 DPU_ERROR_ENC(dpu_enc, "dp display disable failed\n");
1260 }
1261
1262 mutex_unlock(&dpu_enc->enc_lock);
1263 }
1264

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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