From 2bffadf07b54a3ee47164b65687d673175f14bac Mon Sep 17 00:00:00 2001
From: Manu Abraham <manu@linuxtv.org>
Date: Thu, 4 Sep 2008 14:09:26 +0200
Subject: [PATCH] DVB Make DVBFE_GET_INFO as well backward compatible.

DVBFE_GET_INFO ioctl was not backward compatible. The patch
fixes the issue.

From: Marco Schluessler <marco@lordzodiac.de>
Signed-off-by: Marco Schluessler <marco@lordzodiac.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>

diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index d8261b6..c451785 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -1859,7 +1859,69 @@ static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
 			err = fe->ops.get_info(fe, &fepriv->fe_info);
 			memcpy((struct dvbfe_info *) parg, &fepriv->fe_info, sizeof (struct dvbfe_info));
 		} else {
-			memcpy(&fepriv->fe_info, (struct dvbfe_info *) parg, sizeof (struct dvbfe_info));
+			memset(&fepriv->fe_info, 0, sizeof(struct dvbfe_info));
+			switch (fe->ops.info.type) {
+				case FE_QPSK:
+					fepriv->fe_info.delivery = DVBFE_DELSYS_DVBS;
+					fepriv->fe_info.delsys.dvbs.modulation = DVBFE_MOD_QPSK;
+					if (fe->ops.info.caps & FE_CAN_FEC_1_2)
+						fepriv->fe_info.delsys.dvbs.fec |= DVBFE_FEC_1_2;
+					if (fe->ops.info.caps & FE_CAN_FEC_2_3)
+						fepriv->fe_info.delsys.dvbs.fec |= DVBFE_FEC_2_3;
+					if (fe->ops.info.caps & FE_CAN_FEC_3_4)
+						fepriv->fe_info.delsys.dvbs.fec |= DVBFE_FEC_3_4;
+					if (fe->ops.info.caps & FE_CAN_FEC_4_5)
+						fepriv->fe_info.delsys.dvbs.fec |= DVBFE_FEC_4_5;
+					if (fe->ops.info.caps & FE_CAN_FEC_5_6)
+						fepriv->fe_info.delsys.dvbs.fec |= DVBFE_FEC_5_6;
+					if (fe->ops.info.caps & FE_CAN_FEC_6_7)
+						fepriv->fe_info.delsys.dvbs.fec |= DVBFE_FEC_6_7;
+					if (fe->ops.info.caps & FE_CAN_FEC_7_8)
+						fepriv->fe_info.delsys.dvbs.fec |= DVBFE_FEC_7_8;
+					if (fe->ops.info.caps & FE_CAN_FEC_8_9)
+						fepriv->fe_info.delsys.dvbs.fec |= DVBFE_FEC_8_9;
+					if (fe->ops.info.caps & FE_CAN_FEC_AUTO)
+						fepriv->fe_info.delsys.dvbs.fec |= DVBFE_FEC_AUTO;
+					break;
+				case FE_QAM:
+					fepriv->fe_info.delivery = DVBFE_DELSYS_DVBC;
+					if (fe->ops.info.caps & FE_CAN_QAM_16)
+						fepriv->fe_info.delsys.dvbc.modulation |= DVBFE_MOD_QAM16;
+					if (fe->ops.info.caps & FE_CAN_QAM_32)
+						fepriv->fe_info.delsys.dvbc.modulation |= DVBFE_MOD_QAM32;
+					if (fe->ops.info.caps & FE_CAN_QAM_64)
+						fepriv->fe_info.delsys.dvbc.modulation |= DVBFE_MOD_QAM64;
+					if (fe->ops.info.caps & FE_CAN_QAM_128)
+						fepriv->fe_info.delsys.dvbc.modulation |= DVBFE_MOD_QAM128;
+					if (fe->ops.info.caps & FE_CAN_QAM_256)
+						fepriv->fe_info.delsys.dvbc.modulation |= DVBFE_MOD_QAM256;
+					if (fe->ops.info.caps & FE_CAN_QAM_AUTO)
+						fepriv->fe_info.delsys.dvbc.modulation |= DVBFE_MOD_QAMAUTO;
+					break;
+				case FE_OFDM:
+					fepriv->fe_info.delivery = DVBFE_DELSYS_DVBT;
+					if (fe->ops.info.caps & FE_CAN_QPSK)
+						fepriv->fe_info.delsys.dvbt.modulation |= DVBFE_MOD_QPSK;
+					if (fe->ops.info.caps & FE_CAN_QAM_16)
+						fepriv->fe_info.delsys.dvbt.modulation |= DVBFE_MOD_QAM16;
+					if (fe->ops.info.caps & FE_CAN_QAM_64)
+						fepriv->fe_info.delsys.dvbt.modulation |= DVBFE_MOD_QAM64;
+					if (fe->ops.info.caps & FE_CAN_QAM_AUTO)
+						fepriv->fe_info.delsys.dvbt.modulation |= DVBFE_MOD_QAMAUTO;
+					break;
+				default:
+					up (&fepriv->sem);
+					return -EINVAL;
+			}
+			memcpy(&fepriv->fe_info.name, &fe->ops.info.name, 128);
+			fepriv->fe_info.frequency_min         = fe->ops.info.frequency_min;
+			fepriv->fe_info.frequency_max         = fe->ops.info.frequency_max;
+			fepriv->fe_info.frequency_step        = fe->ops.info.frequency_stepsize;
+			fepriv->fe_info.symbol_rate_min       = fe->ops.info.symbol_rate_min;
+			fepriv->fe_info.symbol_rate_max       = fe->ops.info.symbol_rate_max;
+			fepriv->fe_info.symbol_rate_tolerance = fe->ops.info.symbol_rate_tolerance;
+
+			memcpy((struct dvbfe_info *) parg, &fepriv->fe_info, sizeof (struct dvbfe_info));
 			err = 0;
 		}
 		break;