[PATCH 5.15 707/731] usb: xhci-mtk: fix leakage of shared hcd when fail to set wakeup irq

Greg Kroah-Hartman
2022-12-28T16:01:51Z

From: Chunfeng Yun <chunfeng.yun@mediatek.com>

commit 03a88b0bafbe3f548729d970d8366f48718c9b19 upstream.

Can not set the @shared_hcd to NULL before decrease the usage count
by usb_put_hcd(), this will cause the shared hcd not released.

Fixes: 04284eb74e0c ("usb: xhci-mtk: add support runtime PM")
Cc: <stable@vger.kernel.org>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/20221128063337.18124-1-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/host/xhci-mtk.c | 1 -
1 file changed, 1 deletion(-)

--- a/drivers/usb/host/xhci-mtk.c
+++ b/drivers/usb/host/xhci-mtk.c
@@ -619,7 +619,6 @@ static int xhci_mtk_probe(struct platfor

dealloc_usb3_hcd:
usb_remove_hcd(xhci->shared_hcd);
- xhci->shared_hcd = NULL;

dealloc_usb2_hcd:
usb_remove_hcd(hcd);