From e32fadc4c2e5975a8e40541e2ba72a7032ed4cf4 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 6 Jan 2009 16:06:07 -0300 Subject: V4L/DVB (10190): cx88: Fix some Kbuild troubles As Randy Dunlap reported, cx88 has some compilation issues: drivers/built-in.o: In function `cx88_call_i2c_clients': (.text+0x20af17): undefined reference to `videobuf_dvb_get_frontend' drivers/built-in.o: In function `cx8802_probe': cx88-mpeg.c:(.devinit.text+0x268c4): undefined reference to `videobuf_dvb_alloc_frontend' cx88-mpeg.c:(.devinit.text+0x268ea): undefined reference to `videobuf_dvb_dealloc_frontends' With those configs: CONFIG_VIDEO_CX88=y CONFIG_VIDEO_CX88_BLACKBIRD=y CONFIG_VIDEO_CX88_DVB=m CONFIG_DVB_CORE=m After carefully examining the code, with the current code, several cx88 drivers (cx8800, cx8802, cx88_dvb and cx88_blackbird) should be compiled as a module, if one of them is marked as such. Just fixing Kconfig could create a very complex set of rules. Also, this hides a problem with the current approach where the dvb functionality weren't confined inside dvb module. What happens is that: - cx88-i2c (part of cx8800) has some special rules if DVB; - cx88-mpeg (cx8802 module) has also part of DVB init code; - cx88-dvb has the rest of the dvb code; - cx88-blackbird can be used with cx88-mpeg, having cx88-dvb or not. So, instead of doing some tricks at Kconfig and wait for a next breakage, this patch moves the dvb code inside cx88-i2c and cx88-mpeg into cx88-dvb. Another problem is that cx8802 were being compiled, even without cx88-dvb and cx88-blackbird modules. While on this code, let's fix also a reported problem: http://www.linuxtv.org/pipermail/linux-dvb/2009-January/031225.html A solution for the issue were proposed here: http://www.mail-archive.com/linux-media@vger.kernel.org/msg00021.html Thanks to Randy, Andy, Gregoire and Thomas for helping us to detect and solve the issues. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx88/cx88-mpeg.c | 30 ++++-------------------------- 1 file changed, 4 insertions(+), 26 deletions(-) (limited to 'drivers/media/video/cx88/cx88-mpeg.c') diff --git a/drivers/media/video/cx88/cx88-mpeg.c b/drivers/media/video/cx88/cx88-mpeg.c index 59164fc94f5f..b295b76737e3 100644 --- a/drivers/media/video/cx88/cx88-mpeg.c +++ b/drivers/media/video/cx88/cx88-mpeg.c @@ -787,6 +787,9 @@ static int __devinit cx8802_probe(struct pci_dev *pci_dev, dev->pci = pci_dev; dev->core = core; + /* Maintain a reference so cx88-video can query the 8802 device. */ + core->dvbdev = dev; + err = cx8802_init_common(dev); if (err != 0) goto fail_free; @@ -794,32 +797,6 @@ static int __devinit cx8802_probe(struct pci_dev *pci_dev, INIT_LIST_HEAD(&dev->drvlist); list_add_tail(&dev->devlist,&cx8802_devlist); -#if defined(CONFIG_VIDEO_CX88_DVB) || defined(CONFIG_VIDEO_CX88_DVB_MODULE) - mutex_init(&dev->frontends.lock); - INIT_LIST_HEAD(&dev->frontends.felist); - - if (core->board.num_frontends) { - struct videobuf_dvb_frontend *fe; - int i; - - printk(KERN_INFO "%s() allocating %d frontend(s)\n", __func__, - core->board.num_frontends); - for (i = 1; i <= core->board.num_frontends; i++) { - fe = videobuf_dvb_alloc_frontend(&dev->frontends, i); - if(fe == NULL) { - printk(KERN_ERR "%s() failed to alloc\n", - __func__); - videobuf_dvb_dealloc_frontends(&dev->frontends); - err = -ENOMEM; - goto fail_free; - } - } - } -#endif - - /* Maintain a reference so cx88-video can query the 8802 device. */ - core->dvbdev = dev; - /* now autoload cx88-dvb or cx88-blackbird */ request_modules(dev); return 0; @@ -827,6 +804,7 @@ static int __devinit cx8802_probe(struct pci_dev *pci_dev, fail_free: kfree(dev); fail_core: + core->dvbdev = NULL; cx88_core_put(core,pci_dev); return err; } -- cgit v1.2.2