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| author |   Lyude Paul <lyude@redhat.com> | 2020-08-26 14:24:48 -0400 |
|---|---|---|
| committer | Lyude Paul <lyude@redhat.com> | 2020-08-31 19:10:08 -0400 |
| commit | d297ce4b5d490eab60bede36bfd5da6fbcd416cf (patch) | |
| tree | 7bef3320d1ad9505e4fa7d297283b08895307029 /drivers/gpu/drm/nouveau/nouveau_connector.h | |
| parent | drm/nouveau/kms: Move drm_dp_cec_unset_edid() into nouveau_connector_detect() (diff) | |
| download | linux-dev-d297ce4b5d490eab60bede36bfd5da6fbcd416cf.tar.xz linux-dev-d297ce4b5d490eab60bede36bfd5da6fbcd416cf.zip | |
drm/nouveau/kms: Only use hpd_work for reprobing in HPD paths
Currently we perform both short IRQ handling for DP, and connector
reprobing in the HPD IRQ handler. However since we need to grab
connection_mutex in order to reprobe a connector, in theory we could
accidentally block ourselves from handling any short IRQs until after a
modeset completes if a connector hotplug happens to occur in parallel
with a modeset.
I haven't seen this actually happen yet, but since we're cleaning up
nouveau's hotplug handling code anyway and we already have a hpd worker,
we can simply fix this by only relying on the HPD worker to actually
reprobe connectors when we receive a HPD IRQ. We also add a mask to
nouveau_drm to keep track of which connectors are waiting to be reprobed
in response to an HPD IRQ.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826182456.322681-13-lyude@redhat.com
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_connector.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_connector.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.h b/drivers/gpu/drm/nouveau/nouveau_connector.h index d6de5cb8e223..d0b859c4a80e 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.h +++ b/drivers/gpu/drm/nouveau/nouveau_connector.h @@ -187,6 +187,7 @@ nouveau_crtc_connector_get(struct nouveau_crtc *nv_crtc) struct drm_connector * nouveau_connector_create(struct drm_device *, const struct dcb_output *); +void nouveau_connector_hpd(struct drm_connector *connector); extern int nouveau_tv_disable; extern int nouveau_ignorelid; |