This is a note to let you know that I've just added the patch titled
drm/msm/dpu: use devres-managed allocation for MDP TOP
to the 6.7-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-msm-dpu-use-devres-managed-allocation-for-mdp-to.patch
and it can be found in the queue-6.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6f4146980b7d49426d94689a9b63871d4e9dc204
Author: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Date: Sat Dec 2 00:18:37 2023 +0300
drm/msm/dpu: use devres-managed allocation for MDP TOP
[ Upstream commit 1e897dcc4c673b9d585c09ddcdbe7fab0934e64f ]
Use devm_kzalloc to create MDP TOP structure. This allows us to remove
corresponding kfree and drop dpu_hw_mdp_destroy() function.
Reviewed-by: Jessica Zhang <quic_jesszhan@xxxxxxxxxxx>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Patchwork: https://patchwork.freedesktop.org/patch/570047/
Link: https://lore.kernel.org/r/20231201211845.1026967-6-dmitry.baryshkov@xxxxxxxxxx
Stable-dep-of: 49e27d3c9cd6 ("drm/msm/dpu: finalise global state object")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
index 24e734768a727..05e48cf4ec1d2 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
@@ -2,6 +2,8 @@
/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
*/
+#include <drm/drm_managed.h>
+
#include "dpu_hwio.h"
#include "dpu_hw_catalog.h"
#include "dpu_hw_top.h"
@@ -247,16 +249,17 @@ static void _setup_mdp_ops(struct dpu_hw_mdp_ops *ops,
ops->intf_audio_select = dpu_hw_intf_audio_select;
}
-struct dpu_hw_mdp *dpu_hw_mdptop_init(const struct dpu_mdp_cfg *cfg,
- void __iomem *addr,
- const struct dpu_mdss_cfg *m)
+struct dpu_hw_mdp *dpu_hw_mdptop_init(struct drm_device *dev,
+ const struct dpu_mdp_cfg *cfg,
+ void __iomem *addr,
+ const struct dpu_mdss_cfg *m)
{
struct dpu_hw_mdp *mdp;
if (!addr)
return ERR_PTR(-EINVAL);
- mdp = kzalloc(sizeof(*mdp), GFP_KERNEL);
+ mdp = drmm_kzalloc(dev, sizeof(*mdp), GFP_KERNEL);
if (!mdp)
return ERR_PTR(-ENOMEM);
@@ -271,9 +274,3 @@ struct dpu_hw_mdp *dpu_hw_mdptop_init(const struct dpu_mdp_cfg *cfg,
return mdp;
}
-
-void dpu_hw_mdp_destroy(struct dpu_hw_mdp *mdp)
-{
- kfree(mdp);
-}
-
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.h
index 8b1463d2b2f0b..6f3dc98087dfe 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.h
@@ -145,13 +145,15 @@ struct dpu_hw_mdp {
/**
* dpu_hw_mdptop_init - initializes the top driver for the passed config
+ * @dev: Corresponding device for devres management
* @cfg: MDP TOP configuration from catalog
* @addr: Mapped register io address of MDP
* @m: Pointer to mdss catalog data
*/
-struct dpu_hw_mdp *dpu_hw_mdptop_init(const struct dpu_mdp_cfg *cfg,
- void __iomem *addr,
- const struct dpu_mdss_cfg *m);
+struct dpu_hw_mdp *dpu_hw_mdptop_init(struct drm_device *dev,
+ const struct dpu_mdp_cfg *cfg,
+ void __iomem *addr,
+ const struct dpu_mdss_cfg *m);
void dpu_hw_mdp_destroy(struct dpu_hw_mdp *mdp);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index fe7267b3bff53..a7ae4479e12e9 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -828,8 +828,6 @@ static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms)
dpu_kms->catalog = NULL;
- if (dpu_kms->hw_mdp)
- dpu_hw_mdp_destroy(dpu_kms->hw_mdp);
dpu_kms->hw_mdp = NULL;
}
@@ -1112,7 +1110,8 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
dpu_kms->rm_init = true;
- dpu_kms->hw_mdp = dpu_hw_mdptop_init(dpu_kms->catalog->mdp,
+ dpu_kms->hw_mdp = dpu_hw_mdptop_init(dev,
+ dpu_kms->catalog->mdp,
dpu_kms->mmio,
dpu_kms->catalog);
if (IS_ERR(dpu_kms->hw_mdp)) {
