linux-kernel - RE: [PATCH] phy/marvell/phy-mvebu-cp110-utmi: fix dr

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] [day] [month] [year] [list]

Message-ID:
 <SA1PR18MB5692D22712BA8A30BADEE3329987A@SA1PR18MB5692.namprd18.prod.outlook.com>
Date: Tue, 6 Jan 2026 15:28:37 +0000
From: Aleksandar Gerasimovski <Aleksandar.Gerasimovski@...den.com>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "vkoul@...nel.org" <vkoul@...nel.org>,
        "kishon@...nel.org"
	<kishon@...nel.org>
CC: "kostap@...vell.com" <kostap@...vell.com>,
        "linux-phy@...ts.infradead.org"
	<linux-phy@...ts.infradead.org>
Subject: RE: [PATCH] phy/marvell/phy-mvebu-cp110-utmi: fix dr_mode property
 read from dts

-----Original Message-----
From: Aleksandar Gerasimovski <aleksandar.gerasimovski@...den.com> 
Sent: Tuesday, January 6, 2026 4:07 PM
To: linux-kernel@...r.kernel.org; vkoul@...nel.org; kishon@...nel.org; Aleksandar Gerasimovski <Aleksandar.Gerasimovski@...den.com>
Subject: [PATCH] phy/marvell/phy-mvebu-cp110-utmi: fix dr_mode property read from dts

The problem with the current implementation is that it does not consider that the USB controller can have multiple PHY handles with different arguments count, as for example we have in our cn9131 based platform:
"phys = <&cp0_comphy1 0>, <&cp0_utmi0>;".

In such case calling "of_usb_get_dr_mode_by_phy" with -1 (no phy-cells) leads to not proper phy detection, taking the "marvell,cp110-utmi-phy"
dts definition we can call the "of_usb_get_dr_mode_by_phy" with 0 (#phy-cells = <0>) and safely look for that phy.

Signed-off-by: Aleksandar Gerasimovski <aleksandar.gerasimovski@...den.com>
---
 drivers/phy/marvell/phy-mvebu-cp110-utmi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/marvell/phy-mvebu-cp110-utmi.c b/drivers/phy/marvell/phy-mvebu-cp110-utmi.c
index 59903f86b13f..dd3e515a8e86 100644
--- a/drivers/phy/marvell/phy-mvebu-cp110-utmi.c
+++ b/drivers/phy/marvell/phy-mvebu-cp110-utmi.c
@@ -338,7 +338,7 @@ static int mvebu_cp110_utmi_phy_probe(struct platform_device *pdev)
 			return -ENOMEM;
 		}

-		port->dr_mode = of_usb_get_dr_mode_by_phy(child, -1);
+		port->dr_mode = of_usb_get_dr_mode_by_phy(child, 0);
 		if ((port->dr_mode != USB_DR_MODE_HOST) &&
 		    (port->dr_mode != USB_DR_MODE_PERIPHERAL)) {
 			dev_err(&pdev->dev,
--
2.34.1

**********************************************************************
DISCLAIMER:
Privileged and/or Confidential information may be contained in this message. If you are not the addressee of this message, you may not copy, use or deliver this message to anyone. In such event, you should destroy the message and kindly notify the sender by reply e-mail. It is understood that opinions or conclusions that do not relate to the official business of the company are neither given nor endorsed by the company. Thank You.