drm/tegra: Explicitly set irq_enabled

Since the Tegra DRM driver doesn't use the drm_irq_install() helper, the
irq_enabled flag needs to be set manually in order to make functionality
such as the DRM_IOCTL_WAIT_VBLANK work properly.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>

diff --git a/drivers/gpu/host1x/drm/drm.c b/drivers/gpu/host1x/drm/drm.c
index 2b561c9..78b07db 100644 (file)
--- a/drivers/gpu/host1x/drm/drm.c
+++ b/drivers/gpu/host1x/drm/drm.c
@@ -257,6 +257,13 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
        if (err < 0)
                return err;
 
+       /*
+        * We don't use the drm_irq_install() helpers provided by the DRM
+        * core, so we need to set this manually in order to allow the
+        * DRM_IOCTL_WAIT_VBLANK to operate correctly.
+        */
+       drm->irq_enabled = 1;
+
        err = drm_vblank_init(drm, drm->mode_config.num_crtc);
        if (err < 0)
                return err;