10:10 p.m.
Hi Lyude,
[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on drm-tip/drm-tip]
[also build test WARNING on tegra-drm/drm/tegra/for-next linus/master
drm-exynos/exynos-drm-next v5.9-rc1 next-20200820]
[cannot apply to drm-intel/for-linux-next drm/drm-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Lyude-Paul/drm-dp-i915-nouveau-C...
base: git://anongit.freedesktop.org/drm/drm-tip drm-tip
config: i386-randconfig-m021-20200820 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com>
New smatch warnings:
drivers/gpu/drm/nouveau/dispnv50/disp.c:608 nv50_audio_component_get_eld() error:
uninitialized symbol 'nv_connector'.
# https://github.com/0day-ci/linux/commit/5c362c0faa9cf06f71364cff9168034cc...
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
Lyude-Paul/drm-dp-i915-nouveau-Cleanup-nouveau-HPD-and-add-DP-features-from-i915/20200821-023327
git checkout 5c362c0faa9cf06f71364cff9168034cc04bb05c
vim +/nv_connector +608 drivers/gpu/drm/nouveau/dispnv50/disp.c
742db30c4ee6cd Takashi Iwai 2020-01-13 581 static int
61a41097e4bd4b Takashi Iwai 2020-04-16 582 nv50_audio_component_get_eld(struct device
*kdev, int port, int dev_id,
742db30c4ee6cd Takashi Iwai 2020-01-13 583 bool *enabled, unsigned char *buf,
int max_bytes)
742db30c4ee6cd Takashi Iwai 2020-01-13 584 {
742db30c4ee6cd Takashi Iwai 2020-01-13 585 struct drm_device *drm_dev =
dev_get_drvdata(kdev);
742db30c4ee6cd Takashi Iwai 2020-01-13 586 struct nouveau_drm *drm =
nouveau_drm(drm_dev);
742db30c4ee6cd Takashi Iwai 2020-01-13 587 struct drm_encoder *encoder;
742db30c4ee6cd Takashi Iwai 2020-01-13 588 struct nouveau_encoder *nv_encoder;
5c362c0faa9cf0 Lyude Paul 2020-08-20 589 struct drm_connector *connector;
742db30c4ee6cd Takashi Iwai 2020-01-13 590 struct nouveau_connector *nv_connector;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
742db30c4ee6cd Takashi Iwai 2020-01-13 591 struct nouveau_crtc *nv_crtc;
5c362c0faa9cf0 Lyude Paul 2020-08-20 592 struct drm_connector_list_iter conn_iter;
742db30c4ee6cd Takashi Iwai 2020-01-13 593 int ret = 0;
742db30c4ee6cd Takashi Iwai 2020-01-13 594
742db30c4ee6cd Takashi Iwai 2020-01-13 595 *enabled = false;
5c362c0faa9cf0 Lyude Paul 2020-08-20 596
742db30c4ee6cd Takashi Iwai 2020-01-13 597 drm_for_each_encoder(encoder, drm->dev)
{
742db30c4ee6cd Takashi Iwai 2020-01-13 598 nv_encoder = nouveau_encoder(encoder);
5c362c0faa9cf0 Lyude Paul 2020-08-20 599
5c362c0faa9cf0 Lyude Paul 2020-08-20 600 drm_connector_list_iter_begin(drm_dev,
&conn_iter);
5c362c0faa9cf0 Lyude Paul 2020-08-20 601 drm_for_each_connector_iter(connector,
&conn_iter) {
5c362c0faa9cf0 Lyude Paul 2020-08-20 602 if (connector->state->best_encoder
== encoder) {
5c362c0faa9cf0 Lyude Paul 2020-08-20 603 nv_connector =
nouveau_connector(connector);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The nouveau_connector() function is a wrapper around container_of() so
it can't be NULL.
5c362c0faa9cf0 Lyude Paul 2020-08-20 604 break;
5c362c0faa9cf0 Lyude Paul 2020-08-20 605 }
5c362c0faa9cf0 Lyude Paul 2020-08-20 606 }
5c362c0faa9cf0 Lyude Paul 2020-08-20 607
drm_connector_list_iter_end(&conn_iter);
5c362c0faa9cf0 Lyude Paul 2020-08-20 @608 if (!nv_connector)
^^^^^^^^^^^^^
Uninitialized.
5c362c0faa9cf0 Lyude Paul 2020-08-20 609 continue;
5c362c0faa9cf0 Lyude Paul 2020-08-20 610
742db30c4ee6cd Takashi Iwai 2020-01-13 611 nv_crtc = nouveau_crtc(encoder->crtc);
5c362c0faa9cf0 Lyude Paul 2020-08-20 612 if (!nv_crtc || nv_encoder->or != port
||
61a41097e4bd4b Takashi Iwai 2020-04-16 613 nv_crtc->index != dev_id)
742db30c4ee6cd Takashi Iwai 2020-01-13 614 continue;
0ad679d157aa69 Ben Skeggs 2020-05-29 615 *enabled = nv_encoder->audio;
742db30c4ee6cd Takashi Iwai 2020-01-13 616 if (*enabled) {
742db30c4ee6cd Takashi Iwai 2020-01-13 617 ret =
drm_eld_size(nv_connector->base.eld);
742db30c4ee6cd Takashi Iwai 2020-01-13 618 memcpy(buf, nv_connector->base.eld,
742db30c4ee6cd Takashi Iwai 2020-01-13 619 min(max_bytes, ret));
742db30c4ee6cd Takashi Iwai 2020-01-13 620 }
742db30c4ee6cd Takashi Iwai 2020-01-13 621 break;
742db30c4ee6cd Takashi Iwai 2020-01-13 622 }
5c362c0faa9cf0 Lyude Paul 2020-08-20 623
742db30c4ee6cd Takashi Iwai 2020-01-13 624 return ret;
742db30c4ee6cd Takashi Iwai 2020-01-13 625 }
742db30c4ee6cd Takashi Iwai 2020-01-13 626
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org