V4L/DVB (8898): pvrusb2: Be able to programmatically retrieve a control's default value

The pvrusb2 control mechanism up until now has used a constant int to
hold a control's default value.  This change makes it possible to
retrieve the control's default through some other means, e.g. as a
result of a query from lower level software.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
index 00306faeac01..c53037a25570 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
@@ -533,7 +533,7 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
 
                         lmin = pvr2_ctrl_get_min(hcp);
                         lmax = pvr2_ctrl_get_max(hcp);
-                        ldef = pvr2_ctrl_get_def(hcp);
+                        pvr2_ctrl_get_def(hcp, &ldef);
                         if (w == -1) {
                                 w = ldef;
                         } else if (w < lmin) {
@@ -543,7 +543,7 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
                         }
                         lmin = pvr2_ctrl_get_min(vcp);
                         lmax = pvr2_ctrl_get_max(vcp);
-                        ldef = pvr2_ctrl_get_def(vcp);
+                        pvr2_ctrl_get_def(vcp, &ldef);
                         if (h == -1) {
                                 h = ldef;
                         } else if (h < lmin) {
@@ -604,6 +604,7 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
         case VIDIOC_QUERYCTRL:
         {
                 struct pvr2_ctrl *cptr;
+                int val;
                 struct v4l2_queryctrl *vc = (struct v4l2_queryctrl *)arg;
                 ret = 0;
                 if (vc->id & V4L2_CTRL_FLAG_NEXT_CTRL) {
@@ -627,7 +628,8 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
                            pvr2_ctrl_get_desc(cptr));
                 strlcpy(vc->name,pvr2_ctrl_get_desc(cptr),sizeof(vc->name));
                 vc->flags = pvr2_ctrl_get_v4lflags(cptr);
-                vc->default_value = pvr2_ctrl_get_def(cptr);
+                pvr2_ctrl_get_def(cptr, &val);
+                vc->default_value = val;
                 switch (pvr2_ctrl_get_type(cptr)) {
                 case pvr2_ctl_enum:
                         vc->type = V4L2_CTRL_TYPE_MENU;