From: Julia Lawall <ju...@diku.dk> Use kzalloc rather than the combination of kmalloc and memset.
The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,size,flags; statement S; @@ -x = kmalloc(size,flags); +x = kzalloc(size,flags); if (x == NULL) S -memset(x, 0, size); // </smpl> Signed-off-by: Julia Lawall <julia at diku.dk> --- drivers/gpu/drm/drm_auth.c | 3 +-- drivers/gpu/drm/drm_dma.c | 4 +--- drivers/gpu/drm/drm_fops.c | 3 +-- drivers/gpu/drm/savage/savage_bci.c | 3 +-- 4 files changed, 4 insertions(+), 9 deletions(-) diff -u -p a/drivers/gpu/drm/drm_auth.c b/drivers/gpu/drm/drm_auth.c --- a/drivers/gpu/drm/drm_auth.c +++ b/drivers/gpu/drm/drm_auth.c @@ -79,10 +79,9 @@ static int drm_add_magic(struct drm_mast struct drm_device *dev = master->minor->dev; DRM_DEBUG("%d\n", magic); - entry = kmalloc(sizeof(*entry), GFP_KERNEL); + entry = kzalloc(sizeof(*entry), GFP_KERNEL); if (!entry) return -ENOMEM; - memset(entry, 0, sizeof(*entry)); entry->priv = priv; entry->hash_item.key = (unsigned long)magic; mutex_lock(&dev->struct_mutex); diff -u -p a/drivers/gpu/drm/drm_dma.c b/drivers/gpu/drm/drm_dma.c --- a/drivers/gpu/drm/drm_dma.c +++ b/drivers/gpu/drm/drm_dma.c @@ -47,12 +47,10 @@ int drm_dma_setup(struct drm_device *dev { int i; - dev->dma = kmalloc(sizeof(*dev->dma), GFP_KERNEL); + dev->dma = kzalloc(sizeof(*dev->dma), GFP_KERNEL); if (!dev->dma) return -ENOMEM; - memset(dev->dma, 0, sizeof(*dev->dma)); - for (i = 0; i <= DRM_MAX_ORDER; i++) memset(&dev->dma->bufs[i], 0, sizeof(dev->dma->bufs[0])); diff -u -p a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -243,11 +243,10 @@ static int drm_open_helper(struct inode DRM_DEBUG("pid = %d, minor = %d\n", task_pid_nr(current), minor_id); - priv = kmalloc(sizeof(*priv), GFP_KERNEL); + priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; - memset(priv, 0, sizeof(*priv)); filp->private_data = priv; priv->filp = filp; priv->uid = current_euid(); diff -u -p a/drivers/gpu/drm/savage/savage_bci.c b/drivers/gpu/drm/savage/savage_bci.c --- a/drivers/gpu/drm/savage/savage_bci.c +++ b/drivers/gpu/drm/savage/savage_bci.c @@ -539,11 +539,10 @@ int savage_driver_load(struct drm_device { drm_savage_private_t *dev_priv; - dev_priv = kmalloc(sizeof(drm_savage_private_t), GFP_KERNEL); + dev_priv = kzalloc(sizeof(drm_savage_private_t), GFP_KERNEL); if (dev_priv == NULL) return -ENOMEM; - memset(dev_priv, 0, sizeof(drm_savage_private_t)); dev->dev_private = (void *)dev_priv; dev_priv->chipset = (enum savage_family)chipset;
