Patch "drm/meson: Fix error handling when afbcd.ops->init fails" has been added to the 5.17-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 5.17-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-5.17 subdirectory.

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



commit e381e344378423115be75da3516eea93a0b062c6
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
    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 b919271a6e50..26aeaf0ab86e 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -302,42 +302,42 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
 	if (priv->afbcd.ops) {
 		ret = priv->afbcd.ops->init(priv);
 		if (ret)
-			return ret;
+			goto free_drm;
 	}
 
 	/* Encoder Initialization */
 
 	ret = meson_encoder_cvbs_init(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_encoder_hdmi_init(priv);
 	if (ret)
-		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 = request_irq(priv->vsync_irq, meson_irq, 0, drm->driver->name, drm);
 	if (ret)
-		goto free_drm;
+		goto exit_afbcd;
 
 	drm_mode_config_reset(drm);
 
@@ -355,6 +355,9 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
 
 uninstall_irq:
 	free_irq(priv->vsync_irq, drm);
+exit_afbcd:
+	if (priv->afbcd.ops)
+		priv->afbcd.ops->exit(priv);
 free_drm:
 	drm_dev_put(drm);