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V4L/DVB (5298): Added support for deferred module requesting to cx88

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added support for deferred module requesting to cx88

Signed-off-by: Markus Rechberger <mrechberger@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Markus Rechberger 2007-04-27 12:31:06 -03:00 committed by Mauro Carvalho Chehab
parent acf2821282
commit 77b7477467
2 changed files with 34 additions and 0 deletions
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32
drivers/media/video/cx88/cx88-mpeg.c
View file

@ -49,6 +49,35 @@ MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
#define mpeg_dbg(level,fmt, arg...) if (debug >= level) \
printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
#if defined(CONFIG_MODULES) && defined(MODULE)
static void request_module_async(struct work_struct *work)
{
struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
switch (cx88_boards[dev->core->board].mpeg) {
case CX88_MPEG_BLACKBIRD:
request_module("cx88-blackbird");
break;
case CX88_MPEG_DVB:
request_module("cx88-dvb");
break;
case CX88_BOARD_NONE:
/* reaching this one isn't possible */
break;
default:
printk("cx88-mpeg.c: WARNING extension [%d] is not supposed to be supported\n",cx88_boards[dev->core->board].mpeg);
}
}
static void request_modules(struct cx8802_dev *dev)
{
INIT_WORK(&dev->request_module_wk, request_module_async);
schedule_work(&dev->request_module_wk);
}
#else
#define request_modules(dev)
#endif /* CONFIG_MODULES */
static LIST_HEAD(cx8802_devlist);
/* ------------------------------------------------------------------ */
@ -778,6 +807,9 @@ static int __devinit cx8802_probe(struct pci_dev *pci_dev,
/* 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;
fail_free:

2
drivers/media/video/cx88/cx88.h
View file

@ -481,6 +481,8 @@ struct cx8802_dev {
/* List of attached drivers */
struct cx8802_driver drvlist;
struct work_struct request_module_wk;
};
/* ----------------------------------------------------------- */