Re: [patch, -git] drivers/media build fix for modular builds

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To: Mike Galbraith <efault@...>
Cc: Andrew Morton <akpm@...>, Ingo Molnar <mingo@...>, David Miller <davem@...>, <torvalds@...>, <linux-dvb-maintainer@...>, <video4linux-list@...>, <linux-kernel@...>, <sfr@...>, Sam Ravnborg <sam@...>
Date: Wednesday, April 30, 2008 - 11:25 am

Hi Mike,

On Wed, 30 Apr 2008 15:03:12 +0200
Mike Galbraith <efault@gmx.de> wrote:


There are two different issues here. The first one is not finding the symbol.
This is weird. Here, everything looks ok:

[ 3929.936478] Linux video capture interface: v2.00
[ 3929.948852] saa7130/34: v4l2 driver version 0.2.14 loaded
[ 3929.949245] saa7133[0]: found at 0000:06:00.0, rev: 209, irq: 20, latency: 64, mmio: 0x8c000000
[ 3929.949439] saa7133[0]: subsystem: 4e42:3502, board: LifeView FlyDVB-T Hybrid Cardbus/MSI TV @nywhere A/D NB [card=94,autodetected]
[ 3929.949673] saa7133[0]: board init: gpio is 10000
[ 3930.034191] saa7133[0]: i2c eeprom 00: 42 4e 02 35 54 20 1c 00 43 43 a9 1c 55 d2 b2 92
[ 3930.034244] saa7133[0]: i2c eeprom 10: 00 00 62 08 ff 20 ff ff ff ff ff ff ff ff ff ff
[ 3930.034312] saa7133[0]: i2c eeprom 20: 01 40 01 03 03 01 01 03 08 ff 01 eb ff ff ff ff
[ 3930.034380] saa7133[0]: i2c eeprom 30: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 3930.034448] saa7133[0]: i2c eeprom 40: ff 21 00 c2 96 10 05 01 01 16 32 15 ff ff ff ff
[ 3930.034517] saa7133[0]: i2c eeprom 50: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 3930.034584] saa7133[0]: i2c eeprom 60: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 3930.034653] saa7133[0]: i2c eeprom 70: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 3930.034721] saa7133[0]: i2c eeprom 80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 3930.034788] saa7133[0]: i2c eeprom 90: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 3930.034857] saa7133[0]: i2c eeprom a0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 3930.034926] saa7133[0]: i2c eeprom b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 3930.034995] saa7133[0]: i2c eeprom c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 3930.035063] saa7133[0]: i2c eeprom d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 3930.035133] saa7133[0]: i2c eeprom e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 3930.035202] saa7133[0]: i2c eeprom f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 3930.083461] tuner' 1-004b: tda829x detected
[ 3930.083470] tuner' 1-004b: Setting mode_mask to 0x0e
[ 3930.083475] tuner' 1-004b: chip found @ 0x96 (saa7133[0])
[ 3930.083482] tuner' 1-004b: tuner 0x4b: Tuner type absent
[ 3930.080597] tuner' 1-004b: TUNER_SET_TYPE_ADDR
[ 3930.080607] tuner' 1-004b: Calling set_type_addr for type=54, addr=0xff, mode=0x0e, config=0x00
[ 3930.080612] tuner' 1-004b: defining GPIO callback
[ 3930.115546] tda829x 1-004b: setting tuner address to 61
[ 3930.155513] tda829x 1-004b: type set to tda8290+75a
[ 3930.183856] tuner' 1-004b: type set to tda8290+75a
[ 3930.183860] tuner' 1-004b: tv freq set to 400.00
[ 3930.779947] tuner' 1-004b: saa7133[0] tuner' I2C addr 0x96 with type 54 used for 0x0e


The other one is that the error handling seems to be incomplete on both
tuner-core and saa7134-dvb.

Please try this patch. It should avoid an OOPS, if attach fails.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff -r 341e0cd5c1a4 linux/drivers/media/video/saa7134/saa7134-dvb.c
--- a/linux/drivers/media/video/saa7134/saa7134-dvb.c	Wed Apr 30 11:40:17 2008 +0000
+++ b/linux/drivers/media/video/saa7134/saa7134-dvb.c	Wed Apr 30 12:16:38 2008 -0300
@@ -541,19 +541,23 @@
 	return 0;
 }
 
-static void configure_tda827x_fe(struct saa7134_dev *dev, struct tda1004x_config *cdec_conf,
-							  struct tda827x_config *tuner_conf)
+static int configure_tda827x_fe(struct saa7134_dev *dev,
+				struct tda1004x_config *cdec_conf,
+				struct tda827x_config *tuner_conf)
 {
 	dev->dvb.frontend = dvb_attach(tda10046_attach, cdec_conf, &dev->i2c_adap);
 	if (dev->dvb.frontend) {
 		if (cdec_conf->i2c_gate)
 			dev->dvb.frontend->ops.i2c_gate_ctrl = tda8290_i2c_gate_ctrl;
-		if (dvb_attach(tda827x_attach, dev->dvb.frontend, cdec_conf->tuner_address,
-							&dev->i2c_adap, tuner_conf) == NULL) {
-			wprintk("no tda827x tuner found at addr: %02x\n",
+		if (dvb_attach(tda827x_attach, dev->dvb.frontend,
+			       cdec_conf->tuner_address,
+			       &dev->i2c_adap, tuner_conf))
+			return 0;
+
+		wprintk("no tda827x tuner found at addr: %02x\n",
 				cdec_conf->tuner_address);
-		}
 	}
+	return -EINVAL;
 }
 
 /* ------------------------------------------------------------------ */
@@ -1000,7 +1004,9 @@
 		break;
 	case SAA7134_BOARD_FLYDVBTDUO:
 	case SAA7134_BOARD_FLYDVBT_DUO_CARDBUS:
-		configure_tda827x_fe(dev, &tda827x_lifeview_config, &tda827x_cfg_0);
+		if (configure_tda827x_fe(dev, &tda827x_lifeview_config,
+					 &tda827x_cfg_0) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_PHILIPS_EUROPA:
 	case SAA7134_BOARD_VIDEOMATE_DVBT_300:
@@ -1025,36 +1031,52 @@
 		}
 		break;
 	case SAA7134_BOARD_KWORLD_DVBT_210:
-		configure_tda827x_fe(dev, &kworld_dvb_t_210_config, &tda827x_cfg_2);
+		if (configure_tda827x_fe(dev, &kworld_dvb_t_210_config,
+					 &tda827x_cfg_2) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_PHILIPS_TIGER:
-		configure_tda827x_fe(dev, &philips_tiger_config, &tda827x_cfg_0);
+		if (configure_tda827x_fe(dev, &philips_tiger_config,
+					 &tda827x_cfg_0) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_PINNACLE_PCTV_310i:
-		configure_tda827x_fe(dev, &pinnacle_pctv_310i_config, &tda827x_cfg_1);
+		if (configure_tda827x_fe(dev, &pinnacle_pctv_310i_config,
+					 &tda827x_cfg_1) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_HAUPPAUGE_HVR1110:
-		configure_tda827x_fe(dev, &hauppauge_hvr_1110_config, &tda827x_cfg_1);
+		if (configure_tda827x_fe(dev, &hauppauge_hvr_1110_config,
+					 &tda827x_cfg_1) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_ASUSTeK_P7131_DUAL:
-		configure_tda827x_fe(dev, &asus_p7131_dual_config, &tda827x_cfg_0);
+		if (configure_tda827x_fe(dev, &asus_p7131_dual_config,
+					 &tda827x_cfg_0) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_FLYDVBT_LR301:
-		configure_tda827x_fe(dev, &tda827x_lifeview_config, &tda827x_cfg_0);
+		if (configure_tda827x_fe(dev, &tda827x_lifeview_config,
+					 &tda827x_cfg_0) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_FLYDVB_TRIO:
-		if(! use_frontend) {	/* terrestrial */
-			configure_tda827x_fe(dev, &lifeview_trio_config, &tda827x_cfg_0);
+		if (!use_frontend) {	/* terrestrial */
+			if (configure_tda827x_fe(dev, &lifeview_trio_config,
+						 &tda827x_cfg_0) < 0)
+				goto dettach_frontend;
 		} else {  		/* satellite */
 			dev->dvb.frontend = dvb_attach(tda10086_attach, &flydvbs, &dev->i2c_adap);
 			if (dev->dvb.frontend) {
 				if (dvb_attach(tda826x_attach, dev->dvb.frontend, 0x63,
 									&dev->i2c_adap, 0) == NULL) {
 					wprintk("%s: Lifeview Trio, No tda826x found!\n", __func__);
+					goto dettach_frontend;
 				}
 				if (dvb_attach(isl6421_attach, dev->dvb.frontend, &dev->i2c_adap,
 										0x08, 0, 0) == NULL) {
 					wprintk("%s: Lifeview Trio, No ISL6421 found!\n", __func__);
+					goto dettach_frontend;
 				}
 			}
 		}
@@ -1070,15 +1092,20 @@
 								&ads_duo_cfg) == NULL) {
 				wprintk("no tda827x tuner found at addr: %02x\n",
 					ads_tech_duo_config.tuner_address);
+				goto dettach_frontend;
 			}
 		}
 		break;
 	case SAA7134_BOARD_TEVION_DVBT_220RF:
-		configure_tda827x_fe(dev, &tevion_dvbt220rf_config, &tda827x_cfg_0);
+		if (configure_tda827x_fe(dev, &tevion_dvbt220rf_config,
+					 &tda827x_cfg_0) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_MEDION_MD8800_QUADRO:
 		if (!use_frontend) {     /* terrestrial */
-			configure_tda827x_fe(dev, &md8800_dvbt_config, &tda827x_cfg_0);
+			if (configure_tda827x_fe(dev, &md8800_dvbt_config,
+						 &tda827x_cfg_0) < 0)
+				goto dettach_frontend;
 		} else {        /* satellite */
 			dev->dvb.frontend = dvb_attach(tda10086_attach,
 							&flydvbs, &dev->i2c_adap);
@@ -1089,16 +1116,20 @@
 				struct i2c_msg msg = {.addr = 0x08, .flags = 0, .len = 1};
 
 				if (dvb_attach(tda826x_attach, dev->dvb.frontend,
-						0x60, &dev->i2c_adap, 0) == NULL)
+						0x60, &dev->i2c_adap, 0) == NULL) {
 					wprintk("%s: Medion Quadro, no tda826x "
 						"found !\n", __func__);
+					goto dettach_frontend;
+				}
 				if (dev_id != 0x08) {
 					/* we need to open the i2c gate (we know it exists) */
 					fe->ops.i2c_gate_ctrl(fe, 1);
 					if (dvb_attach(isl6405_attach, fe,
-							&dev->i2c_adap, 0x08, 0, 0) == NULL)
+							&dev->i2c_adap, 0x08, 0, 0) == NULL) {
 						wprintk("%s: Medion Quadro, no ISL6405 "
 							"found !\n", __func__);
+						goto dettach_frontend;
+					}
 					if (dev_id == 0x07) {
 						/* fire up the 2nd section of the LNB supply since
 						   we can't do this from the other section */
@@ -1120,19 +1151,17 @@
 	case SAA7134_BOARD_AVERMEDIA_AVERTVHD_A180:
 		dev->dvb.frontend = dvb_attach(nxt200x_attach, &avertvhda180,
 					       &dev->i2c_adap);
-		if (dev->dvb.frontend) {
+		if (dev->dvb.frontend)
 			dvb_attach(dvb_pll_attach, dev->dvb.frontend, 0x61,
 				   NULL, DVB_PLL_TDHU2);
-		}
 		break;
 	case SAA7134_BOARD_KWORLD_ATSC110:
 		dev->dvb.frontend = dvb_attach(nxt200x_attach, &kworldatsc110,
 					       &dev->i2c_adap);
-		if (dev->dvb.frontend) {
+		if (dev->dvb.frontend)
 			dvb_attach(simple_tuner_attach, dev->dvb.frontend,
 				   &dev->i2c_adap, 0x61,
 				   TUNER_PHILIPS_TUV1236D);
-		}
 		break;
 	case SAA7134_BOARD_FLYDVBS_LR300:
 		dev->dvb.frontend = dvb_attach(tda10086_attach, &flydvbs,
@@ -1141,10 +1170,12 @@
 			if (dvb_attach(tda826x_attach, dev->dvb.frontend, 0x60,
 				       &dev->i2c_adap, 0) == NULL) {
 				wprintk("%s: No tda826x found!\n", __func__);
+				goto dettach_frontend;
 			}
 			if (dvb_attach(isl6421_attach, dev->dvb.frontend,
 				       &dev->i2c_adap, 0x08, 0, 0) == NULL) {
 				wprintk("%s: No ISL6421 found!\n", __func__);
+				goto dettach_frontend;
 			}
 		}
 		break;
@@ -1171,43 +1202,65 @@
 		}
 		break;
 	case SAA7134_BOARD_CINERGY_HT_PCMCIA:
-		configure_tda827x_fe(dev, &cinergy_ht_config, &tda827x_cfg_0);
+		if (configure_tda827x_fe(dev, &cinergy_ht_config,
+					 &tda827x_cfg_0) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_CINERGY_HT_PCI:
-		configure_tda827x_fe(dev, &cinergy_ht_pci_config, &tda827x_cfg_0);
+		if (configure_tda827x_fe(dev, &cinergy_ht_pci_config,
+					 &tda827x_cfg_0) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_PHILIPS_TIGER_S:
-		configure_tda827x_fe(dev, &philips_tiger_s_config, &tda827x_cfg_2);
+		if (configure_tda827x_fe(dev, &philips_tiger_s_config,
+					 &tda827x_cfg_2) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_ASUS_P7131_4871:
-		configure_tda827x_fe(dev, &asus_p7131_4871_config, &tda827x_cfg_2);
+		if (configure_tda827x_fe(dev, &asus_p7131_4871_config,
+					 &tda827x_cfg_2) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_ASUSTeK_P7131_HYBRID_LNA:
-		configure_tda827x_fe(dev, &asus_p7131_hybrid_lna_config, &tda827x_cfg_2);
+		if (configure_tda827x_fe(dev, &asus_p7131_hybrid_lna_config,
+					 &tda827x_cfg_2) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_AVERMEDIA_SUPER_007:
-		configure_tda827x_fe(dev, &avermedia_super_007_config, &tda827x_cfg_0);
+		if (configure_tda827x_fe(dev, &avermedia_super_007_config,
+					 &tda827x_cfg_0) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_TWINHAN_DTV_DVB_3056:
-		configure_tda827x_fe(dev, &twinhan_dtv_dvb_3056_config, &tda827x_cfg_2_sw42);
+		if (configure_tda827x_fe(dev, &twinhan_dtv_dvb_3056_config,
+					 &tda827x_cfg_2_sw42) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_PHILIPS_SNAKE:
 		dev->dvb.frontend = dvb_attach(tda10086_attach, &flydvbs,
 						&dev->i2c_adap);
 		if (dev->dvb.frontend) {
 			if (dvb_attach(tda826x_attach, dev->dvb.frontend, 0x60,
-					&dev->i2c_adap, 0) == NULL)
+					&dev->i2c_adap, 0) == NULL) {
 				wprintk("%s: No tda826x found!\n", __func__);
+				goto dettach_frontend;
+			}
 			if (dvb_attach(lnbp21_attach, dev->dvb.frontend,
-					&dev->i2c_adap, 0, 0) == NULL)
+					&dev->i2c_adap, 0, 0) == NULL) {
 				wprintk("%s: No lnbp21 found!\n", __func__);
+				goto dettach_frontend;
+			}
 		}
 		break;
 	case SAA7134_BOARD_CREATIX_CTX953:
-		configure_tda827x_fe(dev, &md8800_dvbt_config, &tda827x_cfg_0);
+		if (configure_tda827x_fe(dev, &md8800_dvbt_config,
+					 &tda827x_cfg_0) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_MSI_TVANYWHERE_AD11:
-		configure_tda827x_fe(dev, &philips_tiger_s_config, &tda827x_cfg_2);
+		if (configure_tda827x_fe(dev, &philips_tiger_s_config,
+					 &tda827x_cfg_2) < 0)
+			goto dettach_frontend;
 		break;
 	case SAA7134_BOARD_AVERMEDIA_CARDBUS_506:
 #if 0
@@ -1225,16 +1278,20 @@
 		if (dev->dvb.frontend) {
 			struct dvb_frontend *fe;
 			if (dvb_attach(dvb_pll_attach, dev->dvb.frontend, 0x60,
-				  &dev->i2c_adap, DVB_PLL_PHILIPS_SD1878_TDA8261) == NULL)
+				  &dev->i2c_adap, DVB_PLL_PHILIPS_SD1878_TDA8261) == NULL) {
 				wprintk("%s: MD7134 DVB-S, no SD1878 "
 					"found !\n", __func__);
+				goto dettach_frontend;
+			}
 			/* we need to open the i2c gate (we know it exists) */
 			fe = dev->dvb.frontend;
 			fe->ops.i2c_gate_ctrl(fe, 1);
 			if (dvb_attach(isl6405_attach, fe,
-					&dev->i2c_adap, 0x08, 0, 0) == NULL)
+					&dev->i2c_adap, 0x08, 0, 0) == NULL) {
 				wprintk("%s: MD7134 DVB-S, no ISL6405 "
 					"found !\n", __func__);
+				goto dettach_frontend;
+			}
 			fe->ops.i2c_gate_ctrl(fe, 0);
 			dev->original_set_voltage = fe->ops.set_voltage;
 			fe->ops.set_voltage = md8800_set_voltage;
@@ -1261,10 +1318,7 @@
 		if (!fe) {
 			printk(KERN_ERR "%s/2: xc3028 attach failed\n",
 			       dev->name);
-			dvb_frontend_detach(dev->dvb.frontend);
-			dvb_unregister_frontend(dev->dvb.frontend);
-			dev->dvb.frontend = NULL;
-			return -1;
+			goto dettach_frontend;
 		}
 	}
 
@@ -1289,6 +1343,13 @@
 			dev->dvb.frontend->ops.tuner_ops.sleep(dev->dvb.frontend);
 	}
 	return ret;
+
+dettach_frontend:
+	dvb_frontend_detach(dev->dvb.frontend);
+	dvb_unregister_frontend(dev->dvb.frontend);
+	dev->dvb.frontend = NULL;
+
+	return -1;
 }
 
 static int dvb_fini(struct saa7134_dev *dev)
diff -r 341e0cd5c1a4 linux/drivers/media/video/tuner-core.c
--- a/linux/drivers/media/video/tuner-core.c	Wed Apr 30 11:40:17 2008 +0000
+++ b/linux/drivers/media/video/tuner-core.c	Wed Apr 30 12:16:38 2008 -0300
@@ -369,16 +369,6 @@
 	tuner_warn("====================== WARNING! ======================\n");
 }
 
-static void attach_tda829x(struct tuner *t)
-{
-	struct tda829x_config cfg = {
-		.lna_cfg        = t->config,
-		.tuner_callback = t->tuner_callback,
-	};
-	dvb_attach(tda829x_attach,
-		   &t->fe, t->i2c->adapter, t->i2c->addr, &cfg);
-}
-
 static struct xc5000_config xc5000_cfg;
 
 static void set_type(struct i2c_client *c, unsigned int type,
@@ -414,12 +404,19 @@
 
 	switch (t->type) {
 	case TUNER_MT2032:
-		dvb_attach(microtune_attach,
-			   &t->fe, t->i2c->adapter, t->i2c->addr);
+		if (!dvb_attach(microtune_attach,
+			   &t->fe, t->i2c->adapter, t->i2c->addr))
+			goto attach_failed;
 		break;
 	case TUNER_PHILIPS_TDA8290:
 	{
-		attach_tda829x(t);
+		struct tda829x_config cfg = {
+			.lna_cfg        = t->config,
+			.tuner_callback = t->tuner_callback,
+		};
+		if (!dvb_attach(tda829x_attach, &t->fe, t->i2c->adapter,
+				t->i2c->addr, &cfg))
+			goto attach_failed;
 		break;
 	}
 	case TUNER_TEA5767:
@@ -470,8 +467,9 @@
 		break;
 	}
 	case TUNER_TDA9887:
-		dvb_attach(tda9887_attach,
-			   &t->fe, t->i2c->adapter, t->i2c->addr);
+		if (!dvb_attach(tda9887_attach,
+			   &t->fe, t->i2c->adapter, t->i2c->addr))
+			goto attach_failed;
 		break;
 	case TUNER_XC5000:
 	{

--
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[GIT PATCHES] V4L/DVB updates and fixes for 2.6.26, Mauro Carvalho Chehab, (Tue Apr 29, 5:50 pm)
Re: [v4l-dvb-maintainer] [GIT PATCHES] V4L/DVB updates and f..., Patrick Boettcher, (Wed Apr 30, 4:02 am)
Re: [v4l-dvb-maintainer] [GIT PATCHES] V4L/DVB updates and f..., Mauro Carvalho Chehab, (Wed Apr 30, 3:03 pm)
Re: [patch, -git] drivers/media build fix for modular builds, Mauro Carvalho Chehab, (Wed Apr 30, 11:25 am)
Re: [patch, -git] drivers/media build fix for modular builds, Mike Galbraith, (Wed Apr 30, 11:48 am)
Re: [patch, -git] drivers/media build fix for modular builds, Mauro Carvalho Chehab, (Wed Apr 30, 12:12 pm)
Re: [patch, -git] drivers/media build fix for modular builds, Mike Galbraith, (Wed Apr 30, 12:31 pm)
Re: [patch, -git] drivers/media build fix for modular builds, Mauro Carvalho Chehab, (Wed Apr 30, 5:35 pm)
Re: [v4l-dvb-maintainer] [patch, -git] drivers/media build f..., Mauro Carvalho Chehab, (Wed Apr 30, 11:48 am)
Re: [v4l-dvb-maintainer] [GIT PATCHES] V4L/DVB updates and f..., Mauro Carvalho Chehab, (Tue Apr 29, 8:00 pm)
Re: [GIT PATCHES] V4L/DVB updates and fixes for 2.6.26, Linus Torvalds, (Tue Apr 29, 5:59 pm)