drm: drop unused drm_master->unique_size

This field is unused and there is really no reason to optimize
unique-allocations. Drop it.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

4 files changed, 1 insertions, 7 deletions

diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index aa1ac79bccbc..cb6b54aebd6f 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -189,7 +189,6 @@ drm_unset_busid(struct drm_device *dev,
         kfree(master->unique);
         master->unique = NULL;
         master->unique_len = 0;
-        master->unique_size = 0;
 }
 
 /**
diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c
index 8efea6b4602b..e266927bb9f1 100644
--- a/drivers/gpu/drm/drm_pci.c
+++ b/drivers/gpu/drm/drm_pci.c
@@ -138,7 +138,6 @@ static int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master)
                 return -ENOMEM;
 
         master->unique_len = strlen(master->unique);
-        master->unique_size = master->unique_len + 1;
         return 0;
 }
 
@@ -149,8 +148,7 @@ int drm_pci_set_unique(struct drm_device *dev,
         int domain, bus, slot, func, ret;
 
         master->unique_len = u->unique_len;
-        master->unique_size = u->unique_len + 1;
-        master->unique = kmalloc(master->unique_size, GFP_KERNEL);
+        master->unique = kmalloc(master->unique_len + 1, GFP_KERNEL);
         if (!master->unique) {
                 ret = -ENOMEM;
                 goto err;
diff --git a/drivers/gpu/drm/drm_platform.c b/drivers/gpu/drm/drm_platform.c
index 0c09ddd50c15..f197a2b6911a 100644
--- a/drivers/gpu/drm/drm_platform.c
+++ b/drivers/gpu/drm/drm_platform.c
@@ -82,7 +82,6 @@ static int drm_platform_set_busid(struct drm_device *dev, struct drm_master *mas
                 return -ENOMEM;
 
         master->unique_len = strlen(master->unique);
-        master->unique_size = master->unique_len;
         return 0;
 }
 
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index a8b24fcddb8c..98b1eafebc1c 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -574,7 +574,6 @@ struct drm_gem_object {
  * @minor: Link back to minor char device we are master for. Immutable.
  * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
  * @unique_len: Length of unique field. Protected by drm_global_mutex.
- * @unique_size: Amount allocated. Protected by drm_global_mutex.
  * @magiclist: Hash of used authentication tokens. Protected by struct_mutex.
  * @magicfree: List of used authentication tokens. Protected by struct_mutex.
  * @lock: DRI lock information.
@@ -585,7 +584,6 @@ struct drm_master {
         struct drm_minor *minor;
         char *unique;
         int unique_len;
-        int unique_size;
         struct drm_open_hash magiclist;
         struct list_head magicfree;
         struct drm_lock_data lock;