diff options
| author | Colin Ian King <colin.king@canonical.com> | 2017-08-18 01:03:23 +0300 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2017-08-22 11:04:36 +0300 |
| commit | 27a451e83e78e1167f58cddba189fae4b4fa0d5b (patch) | |
| tree | 7f1e9e8fc879d1013136b7b88fa609bd4f6da065 | |
| parent | bc60c90f472b6e762ea96ef384072145adc8d4af (diff) | |
| download | linux-27a451e83e78e1167f58cddba189fae4b4fa0d5b.tar.xz | |
drm/nouveau/kms/nv50: perform null check on msto[i] rathern than msto
The null check on the array msto is incorrect since msto is never
null. The null check should be instead on msto[i] since this is
being dereferenced in the call to drm_mode_connector_attach_encoder.
Thanks to Emil Velikov for pointing out the mistake in my original
fix and for suggesting the correct fix.
Detected by CoverityScan, CID#1375915 ("Array compared against 0")
Fixes: f479c0ba4a17 ("drm/nouveau/kms/nv50: initial support for DP 1.2 multi-stream")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv50_display.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index 1449a2c8a1e9..2dbf62a2ac41 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -3141,7 +3141,7 @@ nv50_mstc_new(struct nv50_mstm *mstm, struct drm_dp_mst_port *port, mstc->connector.funcs->reset(&mstc->connector); nouveau_conn_attach_properties(&mstc->connector); - for (i = 0; i < ARRAY_SIZE(mstm->msto) && mstm->msto; i++) + for (i = 0; i < ARRAY_SIZE(mstm->msto) && mstm->msto[i]; i++) drm_mode_connector_attach_encoder(&mstc->connector, &mstm->msto[i]->encoder); drm_object_attach_property(&mstc->connector.base, dev->mode_config.path_property, 0); |