From: Maxime Ripard maxime@cerno.tech
[ Upstream commit 6cf61bf49c9bdb9ba2d33be812d90dd406326c6c ]
While we were using the component framework to deal with all the DRM subdevices, we were not calling component_unbind_all().
This leads to none of the subdevices freeing up their resources as part of their unbind() or device managed hooks.
Fixes: c8b75bca92cb ("drm/vc4: Add KMS support for Raspberry Pi.") Acked-by: Thomas Zimmermann tzimmermann@suse.de Reviewed-by: Dave Stevenson dave.stevenson@raspberrypi.com Signed-off-by: Maxime Ripard maxime@cerno.tech Link: https://lore.kernel.org/r/20220711173939.1132294-13-maxime@cerno.tech Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/vc4/vc4_drv.c | 14 ++++++++++++-- drivers/gpu/drm/vc4/vc4_drv.h | 1 + 2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c index 292d1b6a01b6..6b8dfa1e7650 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.c +++ b/drivers/gpu/drm/vc4/vc4_drv.c @@ -267,6 +267,13 @@ static void vc4_match_add_drivers(struct device *dev, } }
+static void vc4_component_unbind_all(void *ptr) +{ + struct vc4_dev *vc4 = ptr; + + component_unbind_all(vc4->dev, &vc4->base); +} + static const struct of_device_id vc4_dma_range_matches[] = { { .compatible = "brcm,bcm2711-hvs" }, { .compatible = "brcm,bcm2835-hvs" }, @@ -310,6 +317,7 @@ static int vc4_drm_bind(struct device *dev) if (IS_ERR(vc4)) return PTR_ERR(vc4); vc4->is_vc5 = is_vc5; + vc4->dev = dev;
drm = &vc4->base; platform_set_drvdata(pdev, drm); @@ -360,6 +368,10 @@ static int vc4_drm_bind(struct device *dev) if (ret) return ret;
+ ret = devm_add_action_or_reset(dev, vc4_component_unbind_all, vc4); + if (ret) + return ret; + ret = vc4_plane_create_additional_planes(drm); if (ret) goto unbind_all; @@ -380,8 +392,6 @@ static int vc4_drm_bind(struct device *dev) return 0;
unbind_all: - component_unbind_all(dev, drm); - return ret; }
diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index 1beb96b77b8c..950056b83843 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -76,6 +76,7 @@ struct vc4_perfmon {
struct vc4_dev { struct drm_device base; + struct device *dev;
bool is_vc5;