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V4L/DVB (8010): em28xx: Properly register extensions for already attached devices 

em28xx-video.c
 - Properly handle loading of the module when multiple devices are already
   connected (such as at bootup).  Before we were only calling dvb_init()
   against the last device in the list, so while we were handling subsequent
   adds properly, if there were multiple devices present on driver load,
   everybody except the last device would not get initialized.

Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Devin Heitmueller 2008-06-09 14:58:04 -03:00 committed by Mauro Carvalho Chehab
parent d3d9b803ee
commit 0367ca1bc7
1 changed files with 10 additions and 14 deletions
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24
drivers/media/video/em28xx/em28xx-video.c
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@ -1848,32 +1848,28 @@ static DEFINE_MUTEX(em28xx_extension_devlist_lock);
int em28xx_register_extension(struct em28xx_ops *ops)
{
struct em28xx *h, *dev = NULL;
list_for_each_entry(h, &em28xx_devlist, devlist)
dev = h;
struct em28xx *dev = NULL;
mutex_lock(&em28xx_extension_devlist_lock);
list_add_tail(&ops->next, &em28xx_extension_devlist);
if (dev)
ops->init(dev);
list_for_each_entry(dev, &em28xx_devlist, devlist) {
if (dev)
ops->init(dev);
}
printk(KERN_INFO "Em28xx: Initialized (%s) extension\n", ops->name);
mutex_unlock(&em28xx_extension_devlist_lock);
return 0;
}
EXPORT_SYMBOL(em28xx_register_extension);
void em28xx_unregister_extension(struct em28xx_ops *ops)
{
struct em28xx *h, *dev = NULL;
struct em28xx *dev = NULL;
list_for_each_entry(h, &em28xx_devlist, devlist)
dev = h;
if (dev)
ops->fini(dev);
list_for_each_entry(dev, &em28xx_devlist, devlist) {
if (dev)
ops->fini(dev);
}
mutex_lock(&em28xx_extension_devlist_lock);
printk(KERN_INFO "Em28xx: Removed (%s) extension\n", ops->name);