From: Stephane Viau <sviau@codeaurora.org>
Date: Tue, 15 Sep 2015 12:41:44 +0000 (-0400)
Subject: drm/msm/mdp5: remove the cfg pointer from SMP struct
X-Git-Tag: v4.4-rc1~66^2~14^2~7
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=60fb49ca52ec304a937bcee14ae6acbe1e75562b;p=linux.git

drm/msm/mdp5: remove the cfg pointer from SMP struct

We want to make sure we control all the information being passed
down to SMP block. Having access to the cfg pointer here may create
bad things in the future.

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
---

diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h
index efb918d9f68b..a6facafed3bb 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h
@@ -61,7 +61,7 @@ struct mdp5_smp_block {
 	int mmb_size;			/* MMB: size in bytes */
 	uint32_t clients[MAX_CLIENTS];	/* SMP port allocation /pipe */
 	mdp5_smp_state_t reserved_state;/* SMP MMBs statically allocated */
-	int reserved[MAX_CLIENTS];	/* # of MMBs allocated per client */
+	uint8_t reserved[MAX_CLIENTS];	/* # of MMBs allocated per client */
 };
 
 #define MDP5_INTF_NUM_MAX	5
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_smp.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_smp.c
index 563cca972dcb..6f425c25d9fe 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_smp.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_smp.c
@@ -90,7 +90,7 @@
 struct mdp5_smp {
 	struct drm_device *dev;
 
-	const struct mdp5_smp_block *cfg;
+	uint8_t reserved[MAX_CLIENTS]; /* fixed MMBs allocation per client */
 
 	int blk_cnt;
 	int blk_size;
@@ -141,10 +141,10 @@ static int smp_request_block(struct mdp5_smp *smp,
 	struct mdp5_kms *mdp5_kms = get_kms(smp);
 	struct mdp5_client_smp_state *ps = &smp->client_state[cid];
 	int i, ret, avail, cur_nblks, cnt = smp->blk_cnt;
-	int reserved;
+	uint8_t reserved;
 	unsigned long flags;
 
-	reserved = smp->cfg->reserved[cid];
+	reserved = smp->reserved[cid];
 
 	spin_lock_irqsave(&smp->state_lock, flags);
 
@@ -405,12 +405,12 @@ struct mdp5_smp *mdp5_smp_init(struct drm_device *dev, const struct mdp5_smp_blo
 	}
 
 	smp->dev = dev;
-	smp->cfg = cfg;
 	smp->blk_cnt = cfg->mmb_count;
 	smp->blk_size = cfg->mmb_size;
 
 	/* statically tied MMBs cannot be re-allocated: */
 	bitmap_copy(smp->state, cfg->reserved_state, smp->blk_cnt);
+	memcpy(smp->reserved, cfg->reserved, sizeof(smp->reserved));
 	spin_lock_init(&smp->state_lock);
 
 	return smp;