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drm/radeon/kms: drop taking lock around crtc lookup.

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We only add/remove crtcs at driver load, you cannot remove when
the GPU is running a CS packet since the fd is open, when
GPU hotplugging on radeons actually is needed all this locking
needs a review and I've started re-working kms core locking to deal
with this better. But for now avoid long delays in CS processing when
hotplug detect is happening in a different thread.

this fixes a regression introduced with hotplug detection.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2010-07-22 09:57:13 +10:00
parent c42750b026
commit 29508eb66b
3 changed files with 1 additions and 6 deletions
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2
drivers/gpu/drm/radeon/evergreen_cs.c
View file

@ -333,7 +333,6 @@ static int evergreen_cs_packet_parse_vline(struct radeon_cs_parser *p)
header = radeon_get_ib_value(p, h_idx);
crtc_id = radeon_get_ib_value(p, h_idx + 2 + 7 + 1);
reg = CP_PACKET0_GET_REG(header);
mutex_lock(&p->rdev->ddev->mode_config.mutex);
obj = drm_mode_object_find(p->rdev->ddev, crtc_id, DRM_MODE_OBJECT_CRTC);
if (!obj) {
DRM_ERROR("cannot find crtc %d\n", crtc_id);
@ -368,7 +367,6 @@ static int evergreen_cs_packet_parse_vline(struct radeon_cs_parser *p)
}
}
out:
mutex_unlock(&p->rdev->ddev->mode_config.mutex);
return r;
}

2
drivers/gpu/drm/radeon/r100.c
View file

@ -1230,7 +1230,6 @@ int r100_cs_packet_parse_vline(struct radeon_cs_parser *p)
header = radeon_get_ib_value(p, h_idx);
crtc_id = radeon_get_ib_value(p, h_idx + 5);
reg = CP_PACKET0_GET_REG(header);
mutex_lock(&p->rdev->ddev->mode_config.mutex);
obj = drm_mode_object_find(p->rdev->ddev, crtc_id, DRM_MODE_OBJECT_CRTC);
if (!obj) {
DRM_ERROR("cannot find crtc %d\n", crtc_id);
@ -1264,7 +1263,6 @@ int r100_cs_packet_parse_vline(struct radeon_cs_parser *p)
ib[h_idx + 3] |= RADEON_ENG_DISPLAY_SELECT_CRTC1;
}
out:
mutex_unlock(&p->rdev->ddev->mode_config.mutex);
return r;
}

3
drivers/gpu/drm/radeon/r600_cs.c
View file

@ -585,7 +585,7 @@ static int r600_cs_packet_parse_vline(struct radeon_cs_parser *p)
header = radeon_get_ib_value(p, h_idx);
crtc_id = radeon_get_ib_value(p, h_idx + 2 + 7 + 1);
reg = CP_PACKET0_GET_REG(header);
mutex_lock(&p->rdev->ddev->mode_config.mutex);
obj = drm_mode_object_find(p->rdev->ddev, crtc_id, DRM_MODE_OBJECT_CRTC);
if (!obj) {
DRM_ERROR("cannot find crtc %d\n", crtc_id);
@ -620,7 +620,6 @@ static int r600_cs_packet_parse_vline(struct radeon_cs_parser *p)
ib[h_idx + 4] = AVIVO_D2MODE_VLINE_STATUS >> 2;
}
out:
mutex_unlock(&p->rdev->ddev->mode_config.mutex);
return r;
}