linux-kernel - [PATCH] usb: xhci: save hcd_priv memory of shared

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: <1652926622-85047-1-git-send-email-quic_wat@quicinc.com>
Date:   Thu, 19 May 2022 10:17:01 +0800
From:   Tao Wang <quic_wat@...cinc.com>
To:     Mathias Nyman <mathias.nyman@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org (open list:USB XHCI DRIVER),
        linux-kernel@...r.kernel.org (open list)
Cc:     quic_wat@...cinc.com
Subject: [PATCH] usb: xhci: save hcd_priv memory of shared_hcd

The shared_hcd->hcd_priv is not used in xhci, so not
need to malloc hcd priv memory for shared_hcd.

Signed-off-by: Tao Wang <quic_wat@...cinc.com>
---
 drivers/usb/host/xhci-plat.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 01dcfd7..a27dd3a 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -336,6 +336,11 @@ static int xhci_plat_probe(struct platform_device *pdev)
 	device_set_wakeup_capable(&pdev->dev, true);
 
 	xhci->main_hcd = hcd;
+	/*
+	 * The shared_hcd->hcd_priv is not used in xhci,
+	 * so not need to malloc hcd priv memory for shared_hcd.
+	 */
+	driver->hcd_priv_size = 0;
 	xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
 			dev_name(&pdev->dev), hcd);
 	if (!xhci->shared_hcd) {
-- 
2.7.4