[PATCH 04/17] drm/msm/mdp5: use devres-managed allocation for mixer data

[Dmitry Baryshkov <dmitry.baryshkov@linaro.org>]

Use devm_kzalloc to create mixer data structure. This allows us
to remove corresponding kfree and drop mdp5_mixer_destroy() function.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c   |  5 +----
 drivers/gpu/drm/msm/disp/mdp5/mdp5_mixer.c | 10 +++-------
 drivers/gpu/drm/msm/disp/mdp5/mdp5_mixer.h |  4 ++--
 3 files changed, 6 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
index e20ead138602..b4a49d369f0d 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
@@ -211,9 +211,6 @@ static void mdp5_kms_destroy(struct msm_kms *kms)
 	struct msm_gem_address_space *aspace = kms->aspace;
 	int i;
 
-	for (i = 0; i < mdp5_kms->num_hwmixers; i++)
-		mdp5_mixer_destroy(mdp5_kms->hwmixers[i]);
-
 	for (i = 0; i < mdp5_kms->num_hwpipes; i++)
 		mdp5_pipe_destroy(mdp5_kms->hwpipes[i]);
 
@@ -720,7 +717,7 @@ static int hwmixer_init(struct mdp5_kms *mdp5_kms)
 	for (i = 0; i < hw_cfg->lm.count; i++) {
 		struct mdp5_hw_mixer *mixer;
 
-		mixer = mdp5_mixer_init(&hw_cfg->lm.instances[i]);
+		mixer = mdp5_mixer_init(dev, &hw_cfg->lm.instances[i]);
 		if (IS_ERR(mixer)) {
 			ret = PTR_ERR(mixer);
 			DRM_DEV_ERROR(dev->dev, "failed to construct LM%d (%d)\n",
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_mixer.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_mixer.c
index 2536def2a000..2822b533f807 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_mixer.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_mixer.c
@@ -140,20 +140,16 @@ int mdp5_mixer_release(struct drm_atomic_state *s, struct mdp5_hw_mixer *mixer)
 	return 0;
 }
 
-void mdp5_mixer_destroy(struct mdp5_hw_mixer *mixer)
-{
-	kfree(mixer);
-}
-
 static const char * const mixer_names[] = {
 	"LM0", "LM1", "LM2", "LM3", "LM4", "LM5",
 };
 
-struct mdp5_hw_mixer *mdp5_mixer_init(const struct mdp5_lm_instance *lm)
+struct mdp5_hw_mixer *mdp5_mixer_init(struct drm_device *dev,
+				      const struct mdp5_lm_instance *lm)
 {
 	struct mdp5_hw_mixer *mixer;
 
-	mixer = kzalloc(sizeof(*mixer), GFP_KERNEL);
+	mixer = devm_kzalloc(dev->dev, sizeof(*mixer), GFP_KERNEL);
 	if (!mixer)
 		return ERR_PTR(-ENOMEM);
 
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_mixer.h b/drivers/gpu/drm/msm/disp/mdp5/mdp5_mixer.h
index 545ee223b9d7..2bedd75835bc 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_mixer.h
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_mixer.h
@@ -25,8 +25,8 @@ struct mdp5_hw_mixer_state {
 	struct drm_crtc *hwmixer_to_crtc[8];
 };
 
-struct mdp5_hw_mixer *mdp5_mixer_init(const struct mdp5_lm_instance *lm);
-void mdp5_mixer_destroy(struct mdp5_hw_mixer *lm);
+struct mdp5_hw_mixer *mdp5_mixer_init(struct drm_device *dev,
+				      const struct mdp5_lm_instance *lm);
 int mdp5_mixer_assign(struct drm_atomic_state *s, struct drm_crtc *crtc,
 		      uint32_t caps, struct mdp5_hw_mixer **mixer,
 		      struct mdp5_hw_mixer **r_mixer);
-- 
2.39.2