linux-kernel - [PATCH 5.4 22/68] xhci: Set HCD flag to defer primary roothub registration

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: <20210927170220.720895006@linuxfoundation.org>
Date:   Mon, 27 Sep 2021 19:02:18 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Mathias Nyman <mathias.nyman@...ux.intel.com>,
        Chris Chiu <chris.chiu@...onical.com>,
        Kishon Vijay Abraham I <kishon@...com>
Subject: [PATCH 5.4 22/68] xhci: Set HCD flag to defer primary roothub registration

From: Kishon Vijay Abraham I <kishon@...com>

commit b7a0a792f864583207c593b50fd1b752ed89f4c1 upstream.

Set "HCD_FLAG_DEFER_RH_REGISTER" to hcd->flags in xhci_run() to defer
registering primary roothub in usb_add_hcd(). This will make sure both
primary roothub and secondary roothub will be registered along with the
second HCD. This is required for cold plugged USB devices to be detected
in certain PCIe USB cards (like Inateck USB card connected to AM64 EVM
or J7200 EVM).

CC: stable@...r.kernel.org # 5.4+
Suggested-by: Mathias Nyman <mathias.nyman@...ux.intel.com>
Tested-by: Chris Chiu <chris.chiu@...onical.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
Link: https://lore.kernel.org/r/20210909064200.16216-3-kishon@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/usb/host/xhci.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -693,6 +693,7 @@ int xhci_run(struct usb_hcd *hcd)
 		if (ret)
 			xhci_free_command(xhci, command);
 	}
+	set_bit(HCD_FLAG_DEFER_RH_REGISTER, &hcd->flags);
 	xhci_dbg_trace(xhci, trace_xhci_dbg_init,
 			"Finished xhci_run for USB2 roothub");