[PATCH] DRM: Replace kmalloc/memset combos with kzalloc
Davidlohr Bueso
dave at gnu.org
Wed Aug 11 06:18:52 PDT 2010
Currently most, if not all, memory allocation in drm_bufs.c is followed by initializing the memory with 0.
Replace the use of kmalloc+memset with kzalloc.
Signed-off-by: Davidlohr Bueso <dave at gnu.org>
---
drivers/gpu/drm/drm_bufs.c | 33 +++++++++++----------------------
1 files changed, 11 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
index a5c9ce9..3e257a5 100644
--- a/drivers/gpu/drm/drm_bufs.c
+++ b/drivers/gpu/drm/drm_bufs.c
@@ -328,14 +328,13 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset,
return -EINVAL;
}
- list = kmalloc(sizeof(*list), GFP_KERNEL);
+ list = kzalloc(sizeof(*list), GFP_KERNEL);
if (!list) {
if (map->type == _DRM_REGISTERS)
iounmap(map->handle);
kfree(map);
return -EINVAL;
}
- memset(list, 0, sizeof(*list));
list->map = map;
mutex_lock(&dev->struct_mutex);
@@ -678,13 +677,12 @@ int drm_addbufs_agp(struct drm_device * dev, struct drm_buf_desc * request)
return -EINVAL;
}
- entry->buflist = kmalloc(count * sizeof(*entry->buflist), GFP_KERNEL);
+ entry->buflist = kzalloc(count * sizeof(*entry->buflist), GFP_KERNEL);
if (!entry->buflist) {
mutex_unlock(&dev->struct_mutex);
atomic_dec(&dev->buf_alloc);
return -ENOMEM;
}
- memset(entry->buflist, 0, count * sizeof(*entry->buflist));
entry->buf_size = size;
entry->page_order = page_order;
@@ -708,7 +706,7 @@ int drm_addbufs_agp(struct drm_device * dev, struct drm_buf_desc * request)
buf->file_priv = NULL;
buf->dev_priv_size = dev->driver->dev_priv_size;
- buf->dev_private = kmalloc(buf->dev_priv_size, GFP_KERNEL);
+ buf->dev_private = kzalloc(buf->dev_priv_size, GFP_KERNEL);
if (!buf->dev_private) {
/* Set count correctly so we free the proper amount. */
entry->buf_count = count;
@@ -717,7 +715,6 @@ int drm_addbufs_agp(struct drm_device * dev, struct drm_buf_desc * request)
atomic_dec(&dev->buf_alloc);
return -ENOMEM;
}
- memset(buf->dev_private, 0, buf->dev_priv_size);
DRM_DEBUG("buffer %d @ %p\n", entry->buf_count, buf->address);
@@ -832,22 +829,20 @@ int drm_addbufs_pci(struct drm_device * dev, struct drm_buf_desc * request)
return -EINVAL;
}
- entry->buflist = kmalloc(count * sizeof(*entry->buflist), GFP_KERNEL);
+ entry->buflist = kzalloc(count * sizeof(*entry->buflist), GFP_KERNEL);
if (!entry->buflist) {
mutex_unlock(&dev->struct_mutex);
atomic_dec(&dev->buf_alloc);
return -ENOMEM;
}
- memset(entry->buflist, 0, count * sizeof(*entry->buflist));
- entry->seglist = kmalloc(count * sizeof(*entry->seglist), GFP_KERNEL);
+ entry->seglist = kzalloc(count * sizeof(*entry->seglist), GFP_KERNEL);
if (!entry->seglist) {
kfree(entry->buflist);
mutex_unlock(&dev->struct_mutex);
atomic_dec(&dev->buf_alloc);
return -ENOMEM;
}
- memset(entry->seglist, 0, count * sizeof(*entry->seglist));
/* Keep the original pagelist until we know all the allocations
* have succeeded
@@ -911,8 +906,8 @@ int drm_addbufs_pci(struct drm_device * dev, struct drm_buf_desc * request)
buf->file_priv = NULL;
buf->dev_priv_size = dev->driver->dev_priv_size;
- buf->dev_private = kmalloc(buf->dev_priv_size,
- GFP_KERNEL);
+ buf->dev_private = kzalloc(buf->dev_priv_size,
+ GFP_KERNEL);
if (!buf->dev_private) {
/* Set count correctly so we free the proper amount. */
entry->buf_count = count;
@@ -923,7 +918,6 @@ int drm_addbufs_pci(struct drm_device * dev, struct drm_buf_desc * request)
atomic_dec(&dev->buf_alloc);
return -ENOMEM;
}
- memset(buf->dev_private, 0, buf->dev_priv_size);
DRM_DEBUG("buffer %d @ %p\n",
entry->buf_count, buf->address);
@@ -1048,14 +1042,13 @@ static int drm_addbufs_sg(struct drm_device * dev, struct drm_buf_desc * request
return -EINVAL;
}
- entry->buflist = kmalloc(count * sizeof(*entry->buflist),
+ entry->buflist = kzalloc(count * sizeof(*entry->buflist),
GFP_KERNEL);
if (!entry->buflist) {
mutex_unlock(&dev->struct_mutex);
atomic_dec(&dev->buf_alloc);
return -ENOMEM;
}
- memset(entry->buflist, 0, count * sizeof(*entry->buflist));
entry->buf_size = size;
entry->page_order = page_order;
@@ -1080,7 +1073,7 @@ static int drm_addbufs_sg(struct drm_device * dev, struct drm_buf_desc * request
buf->file_priv = NULL;
buf->dev_priv_size = dev->driver->dev_priv_size;
- buf->dev_private = kmalloc(buf->dev_priv_size, GFP_KERNEL);
+ buf->dev_private = kzalloc(buf->dev_priv_size, GFP_KERNEL);
if (!buf->dev_private) {
/* Set count correctly so we free the proper amount. */
entry->buf_count = count;
@@ -1090,8 +1083,6 @@ static int drm_addbufs_sg(struct drm_device * dev, struct drm_buf_desc * request
return -ENOMEM;
}
- memset(buf->dev_private, 0, buf->dev_priv_size);
-
DRM_DEBUG("buffer %d @ %p\n", entry->buf_count, buf->address);
offset += alignment;
@@ -1209,14 +1200,13 @@ static int drm_addbufs_fb(struct drm_device * dev, struct drm_buf_desc * request
return -EINVAL;
}
- entry->buflist = kmalloc(count * sizeof(*entry->buflist),
+ entry->buflist = kzalloc(count * sizeof(*entry->buflist),
GFP_KERNEL);
if (!entry->buflist) {
mutex_unlock(&dev->struct_mutex);
atomic_dec(&dev->buf_alloc);
return -ENOMEM;
}
- memset(entry->buflist, 0, count * sizeof(*entry->buflist));
entry->buf_size = size;
entry->page_order = page_order;
@@ -1240,7 +1230,7 @@ static int drm_addbufs_fb(struct drm_device * dev, struct drm_buf_desc * request
buf->file_priv = NULL;
buf->dev_priv_size = dev->driver->dev_priv_size;
- buf->dev_private = kmalloc(buf->dev_priv_size, GFP_KERNEL);
+ buf->dev_private = kzalloc(buf->dev_priv_size, GFP_KERNEL);
if (!buf->dev_private) {
/* Set count correctly so we free the proper amount. */
entry->buf_count = count;
@@ -1249,7 +1239,6 @@ static int drm_addbufs_fb(struct drm_device * dev, struct drm_buf_desc * request
atomic_dec(&dev->buf_alloc);
return -ENOMEM;
}
- memset(buf->dev_private, 0, buf->dev_priv_size);
DRM_DEBUG("buffer %d @ %p\n", entry->buf_count, buf->address);
--
1.7.0.4
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