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Commit 0367ca1b authored by Devin Heitmueller's avatar Devin Heitmueller Committed by Mauro Carvalho Chehab
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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: default avatarDevin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent d3d9b803

drivers/media/video/em28xx/em28xx-video.c

+10 −14
Original line number Diff line number Diff line
@@ -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);

	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;



	list_for_each_entry(h, &em28xx_devlist, devlist)

		dev = h;

	struct em28xx *dev = NULL;



	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);