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| author | Liviu Dudau <Liviu.Dudau@arm.com> | 2018-07-23 14:05:53 +0300 |
|---|---|---|
| committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2018-07-31 18:31:50 +0300 |
| commit | d664b851eb2bcdf84a3c063cf59457bb15bc6120 (patch) | |
| tree | af8a44c9ef7edb2205f7d9d51aef14ff2fce456a /drivers/gpu/drm/arm/hdlcd_drv.c | |
| parent | 9fd466f54f89fc3a2dc6f86fce2ea0b993ff83bd (diff) | |
| download | linux-d664b851eb2bcdf84a3c063cf59457bb15bc6120.tar.xz | |
drm/arm/hdlcd: Reject atomic commits that disable only the plane
The HDLCD engine needs an active plane while the CRTC is active, as
it will start scanning out data from HDLCD_REG_FB_BASE once it gets
enabled. Make sure that the only available plane doesn't get disabled
while the CRTC remains active, as this will scanout invalid data.
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Diffstat (limited to 'drivers/gpu/drm/arm/hdlcd_drv.c')
| -rw-r--r-- | drivers/gpu/drm/arm/hdlcd_drv.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c index 70fca288313a..0ed1cde98cf8 100644 --- a/drivers/gpu/drm/arm/hdlcd_drv.c +++ b/drivers/gpu/drm/arm/hdlcd_drv.c @@ -325,6 +325,7 @@ err_fbdev: err_vblank: pm_runtime_disable(drm->dev); err_pm_active: + drm_atomic_helper_shutdown(drm); component_unbind_all(dev, drm); err_unload: of_node_put(hdlcd->crtc.port); @@ -350,16 +351,18 @@ static void hdlcd_drm_unbind(struct device *dev) component_unbind_all(dev, drm); of_node_put(hdlcd->crtc.port); hdlcd->crtc.port = NULL; - pm_runtime_get_sync(drm->dev); + pm_runtime_get_sync(dev); + drm_crtc_vblank_off(&hdlcd->crtc); drm_irq_uninstall(drm); - pm_runtime_put_sync(drm->dev); - pm_runtime_disable(drm->dev); - of_reserved_mem_device_release(drm->dev); drm_atomic_helper_shutdown(drm); + pm_runtime_put(dev); + if (pm_runtime_enabled(dev)) + pm_runtime_disable(dev); + of_reserved_mem_device_release(dev); drm_mode_config_cleanup(drm); - drm_dev_put(drm); drm->dev_private = NULL; dev_set_drvdata(dev, NULL); + drm_dev_put(drm); } static const struct component_master_ops hdlcd_master_ops = { |