linux-kernel - [PATCH 2/2] usb: xhci: fix timeout for transition from RExit to U0

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

Message-Id: <1540141725-13047-2-git-send-email-aaron.ma@canonical.com>
Date:   Mon, 22 Oct 2018 01:08:45 +0800
From:   Aaron Ma <aaron.ma@...onical.com>
To:     aaron.ma@...onical.com, mathias.nyman@...el.com,
        gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] usb: xhci: fix timeout for transition from RExit to U0

This definition is used by msecs_to_jiffies in milliseconds.
According to the comments, max rexit timeout should be 20ms.
Align with the comments to properly calculate the delay.

Verified on Sunrise Point-LP and Cannon Lake.

Signed-off-by: Aaron Ma <aaron.ma@...onical.com>
---
 drivers/usb/host/xhci.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 6230a578324c..30225c53be1c 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1678,7 +1678,7 @@ struct xhci_bus_state {
  * It can take up to 20 ms to transition from RExit to U0 on the
  * Intel Lynx Point LP xHCI host.
  */
-#define	XHCI_MAX_REXIT_TIMEOUT	(20 * 1000)
+#define	XHCI_MAX_REXIT_TIMEOUT	20
 
 static inline unsigned int hcd_index(struct usb_hcd *hcd)
 {
-- 
2.19.1