Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752618Ab0HKNS7 (ORCPT ); Wed, 11 Aug 2010 09:18:59 -0400 Received: from caiajhbdcbbj.dreamhost.com ([208.97.132.119]:38819 "EHLO homiemail-a6.g.dreamhost.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752317Ab0HKNS6 (ORCPT ); Wed, 11 Aug 2010 09:18:58 -0400 Subject: [PATCH] DRM: Replace kmalloc/memset combos with kzalloc From: Davidlohr Bueso Reply-To: dave@gnu.org To: Dave Airlie , Dave Airlie , eric@anholt.net Cc: dri-devel , LKML Content-Type: text/plain; charset="UTF-8" Date: Wed, 11 Aug 2010 09:18:52 -0400 Message-ID: <1281532732.2067.11.camel@cowboy> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6424 Lines: 180 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 --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/