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From: Johan Hovold <johan@kernel.org>
To: Johan Hovold <johan@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Ryan Mann <rmann@ndigital.com>,
	Andreas Messer <andi@bastelmap.de>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/8] USB: serial: ftdi_sio: silence jtag probe
Date: Mon, 10 Nov 2025 12:12:06 +0100	[thread overview]
Message-ID: <20251110111212.32702-3-johan@kernel.org> (raw)
In-Reply-To: <20251110111212.32702-1-johan@kernel.org>

Probe of a device should generally be silent unless errors are
encountered.

Stop logging that the JTAG port is ignored when probing devices with
such a reserved port.

This also maintains consistency with devices that match on interface
number to avoid binding to reserved ports.

Note that the message is not even correct for the second port of the ST
Micro Connect Lite.

Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/usb/serial/ftdi_sio.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 9993a5123344..a9d3451cd628 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -2295,10 +2295,8 @@ static int ftdi_jtag_probe(struct usb_serial *serial)
 	struct usb_interface *intf = serial->interface;
 	int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
 
-	if (ifnum == 0) {
-		dev_info(&intf->dev, "Ignoring interface reserved for JTAG\n");
+	if (ifnum == 0)
 		return -ENODEV;
-	}
 
 	return 0;
 }
@@ -2331,10 +2329,8 @@ static int ftdi_stmclite_probe(struct usb_serial *serial)
 	struct usb_interface *intf = serial->interface;
 	int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
 
-	if (ifnum < 2) {
-		dev_info(&intf->dev, "Ignoring interface reserved for JTAG\n");
+	if (ifnum < 2)
 		return -ENODEV;
-	}
 
 	return 0;
 }
-- 
2.51.0


  parent reply	other threads:[~2025-11-10 11:14 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-10 11:12 [PATCH 0/8] USB: serial: ftdi_sio: clean up quirk handling Johan Hovold
2025-11-10 11:12 ` [PATCH 1/8] USB: serial: ftdi_sio: match on interface number for jtag Johan Hovold
2025-11-10 11:12 ` Johan Hovold [this message]
2025-11-10 11:12 ` [PATCH 3/8] USB: serial: ftdi_sio: rewrite 8u2232c quirk Johan Hovold
2025-11-10 11:12 ` [PATCH 4/8] USB: serial: ftdi_sio: clean up quirk comments Johan Hovold
2025-11-10 11:12 ` [PATCH 5/8] USB: serial: ftdi_sio: rename quirk symbols Johan Hovold
2025-11-10 11:12 ` [PATCH 6/8] USB: serial: ftdi_sio: enable NDI speed hack consistently Johan Hovold
2025-11-10 11:12 ` [PATCH 7/8] USB: serial: ftdi_sio: clean up NDI speed hack Johan Hovold
2025-11-10 11:12 ` [PATCH 8/8] USB: serial: ftdi_sio: drop NDI quirk module parameter Johan Hovold

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