lkml.org 
[lkml]   [2012]   [May]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 06/10] video/uvc: use memweight()
    Date
    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


    \
     
     \ /
      Last update: 2012-05-20 15:41    [W:0.022 / U:0.216 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site