drivers: use kzalloc/kcalloc instead of 'kmalloc+memset', where possible

Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Tejun Heo <tj@kernel.org>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 7 deletions

diff --git a/drivers/gpu/drm/drm_scatter.c b/drivers/gpu/drm/drm_scatter.c
index d15e09b0ae0b..7525e0311e59 100644
--- a/drivers/gpu/drm/drm_scatter.c
+++ b/drivers/gpu/drm/drm_scatter.c
@@ -83,30 +83,26 @@ int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request)
         if (dev->sg)
                 return -EINVAL;
 
-        entry = kmalloc(sizeof(*entry), GFP_KERNEL);
+        entry = kzalloc(sizeof(*entry), GFP_KERNEL);
         if (!entry)
                 return -ENOMEM;
 
-        memset(entry, 0, sizeof(*entry));
         pages = (request->size + PAGE_SIZE - 1) / PAGE_SIZE;
         DRM_DEBUG("size=%ld pages=%ld\n", request->size, pages);
 
         entry->pages = pages;
-        entry->pagelist = kmalloc(pages * sizeof(*entry->pagelist), GFP_KERNEL);
+        entry->pagelist = kcalloc(pages, sizeof(*entry->pagelist), GFP_KERNEL);
         if (!entry->pagelist) {
                 kfree(entry);
                 return -ENOMEM;
         }
 
-        memset(entry->pagelist, 0, pages * sizeof(*entry->pagelist));
-
-        entry->busaddr = kmalloc(pages * sizeof(*entry->busaddr), GFP_KERNEL);
+        entry->busaddr = kcalloc(pages, sizeof(*entry->busaddr), GFP_KERNEL);
         if (!entry->busaddr) {
                 kfree(entry->pagelist);
                 kfree(entry);
                 return -ENOMEM;
         }
-        memset((void *)entry->busaddr, 0, pages * sizeof(*entry->busaddr));
 
         entry->virtual = drm_vmalloc_dma(pages << PAGE_SHIFT);
         if (!entry->virtual) {