From 0daae072ebb98a7daa06fa946cd04e281a9a169e Mon Sep 17 00:00:00 2001 From: Yang Yingliang Date: Mon, 31 Oct 2022 20:13:41 +0800 Subject: 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: a900845e5661 ("mISDN: Add support for Traverse Technologies NETJet PCI cards") Signed-off-by: Yang Yingliang Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/isdn/hardware/mISDN/netjet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/isdn/hardware/mISDN/netjet.c b/drivers/isdn/hardware/mISDN/netjet.c index 4a342daac98d..45b6aaf3de4a 100644 --- a/drivers/isdn/hardware/mISDN/netjet.c +++ b/drivers/isdn/hardware/mISDN/netjet.c @@ -970,7 +970,7 @@ nj_release(struct tiger_hw *card) } if (card->irq > 0) free_irq(card->irq, card); - if (card->isac.dch.dev.dev.class) + if (device_is_registered(&card->isac.dch.dev.dev)) mISDN_unregister_device(&card->isac.dch.dev); for (i = 0; i < 2; i++) { -- cgit v1.2.3