Patch "drm/meson: Fix error handling when afbcd.ops->init fails" has been added to the 5.4-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    drm/meson: Fix error handling when afbcd.ops->init fails

to the 5.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-meson-fix-error-handling-when-afbcd.ops-init-fai.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 12bde1764c3e925b3c5a81d4ec8bb117b47cbeaf
Author: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
Date:   Fri Dec 31 00:55:15 2021 +0100

    drm/meson: Fix error handling when afbcd.ops->init fails
    
    [ Upstream commit fa747d75f65d1b1cbc3f4691fa67b695e8a399c8 ]
    
    When afbcd.ops->init fails we need to free the struct drm_device. Also
    all errors which come after afbcd.ops->init was successful need to exit
    the AFBCD, just like meson_drv_unbind() does.
    
    Fixes: d1b5e41e13a7e9 ("drm/meson: Add AFBCD module driver")
    Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
    Acked-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
    Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
    Link: https://patchwork.freedesktop.org/patch/msgid/20211230235515.1627522-3-martin.blumenstingl@xxxxxxxxxxxxxx
    Stable-dep-of: ba98413bf45e ("drm/meson: fix missing component unbind on bind errors")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index 9a39afc3939bc..1f81ab515876a 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -297,31 +297,31 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
 
 	ret = meson_venc_cvbs_create(priv);
 	if (ret)
-		goto free_drm;
+		goto exit_afbcd;
 
 	if (has_components) {
 		ret = component_bind_all(drm->dev, drm);
 		if (ret) {
 			dev_err(drm->dev, "Couldn't bind all components\n");
-			goto free_drm;
+			goto exit_afbcd;
 		}
 	}
 
 	ret = meson_plane_create(priv);
 	if (ret)
-		goto free_drm;
+		goto exit_afbcd;
 
 	ret = meson_overlay_create(priv);
 	if (ret)
-		goto free_drm;
+		goto exit_afbcd;
 
 	ret = meson_crtc_create(priv);
 	if (ret)
-		goto free_drm;
+		goto exit_afbcd;
 
 	ret = drm_irq_install(drm, priv->vsync_irq);
 	if (ret)
-		goto free_drm;
+		goto exit_afbcd;
 
 	drm_mode_config_reset(drm);
 
@@ -339,6 +339,9 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
 
 uninstall_irq:
 	drm_irq_uninstall(drm);
+exit_afbcd:
+	if (priv->afbcd.ops)
+		priv->afbcd.ops->exit(priv);
 free_drm:
 	drm_dev_put(drm);