[media] dvb_frontend: Update the dynamic info->type

Instead of changing the ops.info.type struct, updates only
the data that will be returned to userspace.

Also add some debug messages to help tracking such issues.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index cd3c0f67c85d4e10f01275e2ef8ab1827bd077e8..128f67715ad735a2de791a6afb3bdb0fa83dba78 100644 (file)
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -1551,6 +1551,8 @@ static int set_delivery_system(struct dvb_frontend *fe, u32 desired_system)
                        }
                }
        }
+       dprintk("change delivery system on cache to %d\n", c->delivery_system);
+
        return 0;
 }
 
@@ -1965,6 +1967,7 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
        switch (cmd) {
        case FE_GET_INFO: {
                struct dvb_frontend_info* info = parg;
+
                memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
                dvb_frontend_get_frequency_limits(fe, &info->frequency_min, &info->frequency_max);
 
@@ -1981,16 +1984,16 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
                 */
                switch (dvbv3_type(c->delivery_system)) {
                case DVBV3_QPSK:
-                       fe->ops.info.type = FE_QPSK;
+                       info->type = FE_QPSK;
                        break;
                case DVBV3_ATSC:
-                       fe->ops.info.type = FE_ATSC;
+                       info->type = FE_ATSC;
                        break;
                case DVBV3_QAM:
-                       fe->ops.info.type = FE_QAM;
+                       info->type = FE_QAM;
                        break;
                case DVBV3_OFDM:
-                       fe->ops.info.type = FE_OFDM;
+                       info->type = FE_OFDM;
                        break;
                default:
                        printk(KERN_ERR
@@ -1998,6 +2001,8 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
                               __func__, c->delivery_system);
                        fe->ops.info.type = FE_OFDM;
                }
+               dprintk("current delivery system on cache: %d, V3 type: %d\n",
+                       c->delivery_system, fe->ops.info.type);
 
                /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
                 * do it, it is done for it. */