linux-kernel - [PATCH] Support Castles Vega5000 PoS terminal USB

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Date:   Sun, 23 Feb 2020 00:32:02 +0100
From:   Ondrej Jirman <megous@...ous.com>
To:     linux-usb@...r.kernel.org
Cc:     Ondrej Jirman <megous@...ous.com>,
        Oliver Neukum <oneukum@...e.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] Support Castles Vega5000 PoS terminal USB

This terminal's USB port needs NO_UNION_NORMAL quirk to work with
cdc-acm driver.

Signed-off-by: Ondrej Jirman <megous@...ous.com>
---
 drivers/usb/class/cdc-acm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 62f4fb9b362f1..8577441c81a4d 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1739,6 +1739,9 @@ static const struct usb_device_id acm_ids[] = {
 	{ USB_DEVICE(0x22b8, 0x2d9a),   /* modem + AT port + diagnostics + NMEA */
 	.driver_info = NO_UNION_NORMAL, /* handle only modem interface          */
 	},
+	{ USB_DEVICE(0x0ca6, 0xa050), /* Castles Technology VEGA 5000 */
+	.driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
+	},
 
 	{ USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
 	.driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
-- 
2.25.1