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| author | Alex Deucher <alexander.deucher@amd.com> | 2013-04-11 20:45:34 +0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-04-15 18:34:12 +0400 |
| commit | 2e97be73e5f74a317232740ae82eb8f95326a660 (patch) | |
| tree | 0289bb38a88d53e9a4dff8024740572547c17db2 /drivers/gpu/drm/radeon/evergreen.c | |
| parent | 64d7b8bed851f55a17d15ec6cc60233c85f84357 (diff) | |
| download | linux-2e97be73e5f74a317232740ae82eb8f95326a660.tar.xz | |
drm/radeon/evergreen+: don't enable HPD interrupts on eDP/LVDS
Avoids potential interrupt storms when the display is disabled.
May fix:
https://bugzilla.kernel.org/show_bug.cgi?id=56041
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/radeon/evergreen.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index b114252e7810..124c19365392 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -819,6 +819,16 @@ void evergreen_hpd_init(struct radeon_device *rdev) list_for_each_entry(connector, &dev->mode_config.connector_list, head) { struct radeon_connector *radeon_connector = to_radeon_connector(connector); + + if (connector->connector_type == DRM_MODE_CONNECTOR_eDP || + connector->connector_type == DRM_MODE_CONNECTOR_LVDS) { + /* don't try to enable hpd on eDP or LVDS avoid breaking the + * aux dp channel on imac and help (but not completely fix) + * https://bugzilla.redhat.com/show_bug.cgi?id=726143 + * also avoid interrupt storms during dpms. + */ + continue; + } switch (radeon_connector->hpd.hpd) { case RADEON_HPD_1: WREG32(DC_HPD1_CONTROL, tmp); |