diff options
| author | Christian Koenig <christian.koenig@amd.com> | 2012-05-17 01:33:30 +0200 |
|---|---|---|
| committer | Christian König <deathsimple@vodafone.de> | 2012-06-21 09:38:50 +0200 |
| commit | fb98257a9d9d2089972b18079d5bdd4412e107e2 (patch) | |
| tree | 72f6115ccae023c1e6122bdd82cf310c8014de23 /drivers/gpu/drm/radeon/r100.c | |
| parent | c20dc3698dc7ecf053e2bf77299ae5982c0c2c45 (diff) | |
| download | linux-fb98257a9d9d2089972b18079d5bdd4412e107e2.tar.bz2 | |
drm/radeon: apply Murphy's law to the kms irq code v3
1. It is really dangerous to have more than one
spinlock protecting the same information.
2. radeon_irq_set sometimes wasn't called with lock
protection, so it can happen that more than one
CPU would tamper with the irq regs at the same
time.
3. The pm.gui_idle variable was assuming that the 3D
engine wasn't becoming idle between testing the
register and setting the variable. So just remove
it and test the register directly.
v2: Also handle the hpd irq code the same way.
v3: Rename hpd parameter for clarification.
Signed-off-by: Christian Koenig <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/r100.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r100.c | 29 |
1 files changed, 6 insertions, 23 deletions
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index 415b7d8fbba2..e8fe4ae3bc23 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -567,43 +567,27 @@ void r100_hpd_init(struct radeon_device *rdev) { struct drm_device *dev = rdev->ddev; struct drm_connector *connector; + unsigned enable = 0; list_for_each_entry(connector, &dev->mode_config.connector_list, head) { struct radeon_connector *radeon_connector = to_radeon_connector(connector); - switch (radeon_connector->hpd.hpd) { - case RADEON_HPD_1: - rdev->irq.hpd[0] = true; - break; - case RADEON_HPD_2: - rdev->irq.hpd[1] = true; - break; - default: - break; - } + enable |= 1 << radeon_connector->hpd.hpd; radeon_hpd_set_polarity(rdev, radeon_connector->hpd.hpd); } - if (rdev->irq.installed) - r100_irq_set(rdev); + radeon_irq_kms_enable_hpd(rdev, enable); } void r100_hpd_fini(struct radeon_device *rdev) { struct drm_device *dev = rdev->ddev; struct drm_connector *connector; + unsigned disable = 0; list_for_each_entry(connector, &dev->mode_config.connector_list, head) { struct radeon_connector *radeon_connector = to_radeon_connector(connector); - switch (radeon_connector->hpd.hpd) { - case RADEON_HPD_1: - rdev->irq.hpd[0] = false; - break; - case RADEON_HPD_2: - rdev->irq.hpd[1] = false; - break; - default: - break; - } + disable |= 1 << radeon_connector->hpd.hpd; } + radeon_irq_kms_disable_hpd(rdev, disable); } /* @@ -782,7 +766,6 @@ int r100_irq_process(struct radeon_device *rdev) /* gui idle interrupt */ if (status & RADEON_GUI_IDLE_STAT) { rdev->irq.gui_idle_acked = true; - rdev->pm.gui_idle = true; wake_up(&rdev->irq.idle_queue); } /* Vertical blank interrupts */ |