From: Akinobu Mita <akinobu.mita@gmail.com>
To: linux-kernel@vger.kernel.org, akpm@linux-foundation.org
Cc: Akinobu Mita <akinobu.mita@gmail.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
linux-media@vger.kernel.org
Subject: [PATCH 06/10] video/uvc: use memweight()
Date: Sun, 20 May 2012 22:23:19 +0900 [thread overview]
Message-ID: <1337520203-29147-6-git-send-email-akinobu.mita@gmail.com> (raw)
In-Reply-To: <1337520203-29147-1-git-send-email-akinobu.mita@gmail.com>
Use memweight() to count the total number of bits set in memory area.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: linux-media@vger.kernel.org
---
drivers/media/video/uvc/uvc_ctrl.c | 5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/media/video/uvc/uvc_ctrl.c b/drivers/media/video/uvc/uvc_ctrl.c
index 0efd3b1..8683be0 100644
--- a/drivers/media/video/uvc/uvc_ctrl.c
+++ b/drivers/media/video/uvc/uvc_ctrl.c
@@ -1851,7 +1851,7 @@ int uvc_ctrl_init_device(struct uvc_device *dev)
/* Walk the entities list and instantiate controls */
list_for_each_entry(entity, &dev->entities, list) {
struct uvc_control *ctrl;
- unsigned int bControlSize = 0, ncontrols = 0;
+ unsigned int bControlSize = 0, ncontrols;
__u8 *bmControls = NULL;
if (UVC_ENTITY_TYPE(entity) == UVC_VC_EXTENSION_UNIT) {
@@ -1869,8 +1869,7 @@ int uvc_ctrl_init_device(struct uvc_device *dev)
uvc_ctrl_prune_entity(dev, entity);
/* Count supported controls and allocate the controls array */
- for (i = 0; i < bControlSize; ++i)
- ncontrols += hweight8(bmControls[i]);
+ ncontrols = memweight(bmControls, bControlSize);
if (ncontrols == 0)
continue;
--
1.7.7.6
next prev parent reply other threads:[~2012-05-20 13:25 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-20 13:23 [PATCH 01/10] string: introduce memweight Akinobu Mita
2012-05-20 13:23 ` [PATCH 02/10] minixfs: use memweight() Akinobu Mita
2012-05-20 13:23 ` [PATCH 03/10] qnx4fs: " Akinobu Mita
2012-05-20 15:34 ` Anders Larsen
2012-05-21 11:59 ` Akinobu Mita
2012-05-20 13:23 ` [PATCH 04/10] dm-log: " Akinobu Mita
2012-05-20 13:23 ` [PATCH 05/10] affs: " Akinobu Mita
2012-05-20 13:23 ` Akinobu Mita [this message]
2012-05-20 20:46 ` [PATCH 06/10] video/uvc: " Laurent Pinchart
2012-05-21 12:03 ` Akinobu Mita
2012-05-21 12:18 ` Laurent Pinchart
2012-05-20 13:23 ` [PATCH 07/10] ocfs2: " Akinobu Mita
2012-05-20 13:23 ` [PATCH 08/10] ext2: " Akinobu Mita
2012-05-20 13:23 ` [PATCH 09/10] ext3: " Akinobu Mita
2012-05-20 13:23 ` [PATCH 10/10] ext4: " Akinobu Mita
2012-05-23 9:21 ` [PATCH 01/10] string: introduce memweight Jan Kara
2012-05-23 12:12 ` Akinobu Mita
2012-05-23 12:29 ` Jan Kara
2012-05-23 13:16 ` Matthew Wilcox
2012-05-24 11:54 ` Akinobu Mita
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