linux-kernel - [PATCH V1 1/1] usb/host: Let usb phy shutdown later

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20220412122524.26966-1-surong.pang@gmail.com>
Date:   Tue, 12 Apr 2022 20:25:24 +0800
From:   Surong Pang <surong.pang@...il.com>
To:     mathias.nyman@...el.com, gregkh@...uxfoundation.org
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH V1 1/1] usb/host: Let usb phy shutdown later

From: Surong Pang <surong.pang@...soc.com>

Let usb phy shutdown later in xhci_plat_remove function.
Some phy driver doesn't divide 3.0/2.0 very clear.
If calls usb_phy_shutdown earlier than usb_remove_hcd(hcd),
It will case 10s cmd timeout issue.

Call usb phy shutdown later has better compatibility.

Signed-off-by: Surong Pang <surong.pang@...soc.com>
---
 drivers/usb/host/xhci-plat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 649ffd861b44..dc73a81cbe9b 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -390,7 +390,6 @@ static int xhci_plat_remove(struct platform_device *dev)
 
 	usb_remove_hcd(shared_hcd);
 	xhci->shared_hcd = NULL;
-	usb_phy_shutdown(hcd->usb_phy);
 
 	usb_remove_hcd(hcd);
 	usb_put_hcd(shared_hcd);
@@ -398,6 +397,7 @@ static int xhci_plat_remove(struct platform_device *dev)
 	clk_disable_unprepare(clk);
 	clk_disable_unprepare(reg_clk);
 	usb_put_hcd(hcd);
+	usb_phy_shutdown(hcd->usb_phy);
 
 	pm_runtime_disable(&dev->dev);
 	pm_runtime_put_noidle(&dev->dev);
-- 
2.17.1