Merge branches 'sched/devel', 'sched/cpu-hotplug', 'sched/cpusets' and 'sched/urgent...

[linux-2.6-omap-h63xx.git] / drivers / media / video / uvc / uvc_ctrl.c

diff --git a/drivers/media/video/uvc/uvc_ctrl.c b/drivers/media/video/uvc/uvc_ctrl.c
index 626f4ad7e876e4496ee7a1a882db79ea4ce7e077..feab12aa2c7b5e9c0efb030a7eb1551611dbc766 100644 (file)
--- a/drivers/media/video/uvc/uvc_ctrl.c
+++ b/drivers/media/video/uvc/uvc_ctrl.c
@@ -585,13 +585,17 @@ int uvc_query_v4l2_ctrl(struct uvc_video_device *video,
        struct uvc_control_mapping *mapping;
        struct uvc_menu_info *menu;
        unsigned int i;
-       __u8 data[8];
+       __u8 *data;
        int ret;
 
        ctrl = uvc_find_control(video, v4l2_ctrl->id, &mapping);
        if (ctrl == NULL)
                return -EINVAL;
 
+       data = kmalloc(ctrl->info->size, GFP_KERNEL);
+       if (data == NULL)
+               return -ENOMEM;
+
        memset(v4l2_ctrl, 0, sizeof *v4l2_ctrl);
        v4l2_ctrl->id = mapping->id;
        v4l2_ctrl->type = mapping->v4l2_type;
@@ -604,8 +608,8 @@ int uvc_query_v4l2_ctrl(struct uvc_video_device *video,
        if (ctrl->info->flags & UVC_CONTROL_GET_DEF) {
                if ((ret = uvc_query_ctrl(video->dev, GET_DEF, ctrl->entity->id,
                                video->dev->intfnum, ctrl->info->selector,
-                               &data, ctrl->info->size)) < 0)
-                       return ret;
+                               data, ctrl->info->size)) < 0)
+                       goto out;
                v4l2_ctrl->default_value = uvc_get_le_value(data, mapping);
        }
 
@@ -623,13 +627,15 @@ int uvc_query_v4l2_ctrl(struct uvc_video_device *video,
                        }
                }
 
-               return 0;
+               ret = 0;
+               goto out;
 
        case V4L2_CTRL_TYPE_BOOLEAN:
                v4l2_ctrl->minimum = 0;
                v4l2_ctrl->maximum = 1;
                v4l2_ctrl->step = 1;
-               return 0;
+               ret = 0;
+               goto out;
 
        default:
                break;
@@ -638,26 +644,29 @@ int uvc_query_v4l2_ctrl(struct uvc_video_device *video,
        if (ctrl->info->flags & UVC_CONTROL_GET_MIN) {
                if ((ret = uvc_query_ctrl(video->dev, GET_MIN, ctrl->entity->id,
                                video->dev->intfnum, ctrl->info->selector,
-                               &data, ctrl->info->size)) < 0)
-                       return ret;
+                               data, ctrl->info->size)) < 0)
+                       goto out;
                v4l2_ctrl->minimum = uvc_get_le_value(data, mapping);
        }
        if (ctrl->info->flags & UVC_CONTROL_GET_MAX) {
                if ((ret = uvc_query_ctrl(video->dev, GET_MAX, ctrl->entity->id,
                                video->dev->intfnum, ctrl->info->selector,
-                               &data, ctrl->info->size)) < 0)
-                       return ret;
+                               data, ctrl->info->size)) < 0)
+                       goto out;
                v4l2_ctrl->maximum = uvc_get_le_value(data, mapping);
        }
        if (ctrl->info->flags & UVC_CONTROL_GET_RES) {
                if ((ret = uvc_query_ctrl(video->dev, GET_RES, ctrl->entity->id,
                                video->dev->intfnum, ctrl->info->selector,
-                               &data, ctrl->info->size)) < 0)
-                       return ret;
+                               data, ctrl->info->size)) < 0)
+                       goto out;
                v4l2_ctrl->step = uvc_get_le_value(data, mapping);
        }
 
-       return 0;
+       ret = 0;
+out:
+       kfree(data);
+       return ret;
 }