V4L/DVB (5036): Pvrusb2: Fix for min/max control value checking

In the previous patch we exploited the get_{min,max}_value facility to adjust
min/max allowable frequencies on the fly, depending on tuner mode.

Unfortunately, this facility was not used inside the *sym_to_val() function
that translates what we echo to sysfs, which means we got an -ERANGE despite
asking for a frequency between what we read to be min/max.
This patch corrects this small omission.

Signed-off-by: Pantelis Koukousoulas <pakt223@freemail.gr>
Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 13 insertions, 4 deletions

diff --git a/drivers/media/video/pvrusb2/pvrusb2-ctrl.c b/drivers/media/video/pvrusb2/pvrusb2-ctrl.c
index c77de859cc8e..5c9cf1523e23 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-ctrl.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-ctrl.c
@@ -498,10 +498,19 @@ int pvr2_ctrl_sym_to_value(struct pvr2_ctrl *cptr,
         LOCK_TAKE(cptr->hdw->big_lock); do {
                 if (cptr->info->type == pvr2_ctl_int) {
                         ret = parse_token(ptr,len,valptr,NULL,0);
-                        if ((ret >= 0) &&
-                            ((*valptr < cptr->info->def.type_int.min_value) ||
-                             (*valptr > cptr->info->def.type_int.max_value))) {
-                                ret = -ERANGE;
+                        if (ret >= 0) {
+                                int min, max;
+                                min = cptr->info->def.type_int.min_value;
+                                if (cptr->info->get_min_value) {
+                                        cptr->info->get_min_value(cptr,&min);
+                                }
+                                max = cptr->info->def.type_int.max_value;
+                                if (cptr->info->get_max_value) {
+                                        cptr->info->get_max_value(cptr,&max);
+                                }
+                                if ((*valptr < min) || (*valptr > max)) {
+                                        ret = -ERANGE;
+                                }
                         }
                         if (maskptr) *maskptr = ~0;
                 } else if (cptr->info->type == pvr2_ctl_bool) {