isdn: mISDN: netjet: fix wrong check of device registration
[ Upstream commit bf00f5426074249058a106a6edbb89e4b25a4d79 ]
The class is set in mISDN_register_device(), but if device_add() returns
error, it will lead to delete a device without added, fix this by using
device_is_registered() to check if the device is registered.
Fixes: a900845e56
("mISDN: Add support for Traverse Technologies NETJet PCI cards")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -970,7 +970,7 @@ nj_release(struct tiger_hw *card)
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}
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}
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if (card->irq > 0)
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if (card->irq > 0)
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free_irq(card->irq, card);
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free_irq(card->irq, card);
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if (card->isac.dch.dev.dev.class)
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if (device_is_registered(&card->isac.dch.dev.dev))
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mISDN_unregister_device(&card->isac.dch.dev);
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mISDN_unregister_device(&card->isac.dch.dev);
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for (i = 0; i < 2; i++) {
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for (i = 0; i < 2; i++) {
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