From: Lubomir Rintel <lkundrak@v3.sk>
Date: Tue, 10 Jul 2018 06:28:49 +0000 (+0200)
Subject: usb: cdc_acm: Add quirk for Castles VEGA3000
X-Git-Tag: v4.14.59~15
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=e089c305af4903793dae85dc9d9b706e0d17bfb3;p=users%2Fdwmw2%2Flinux.git

usb: cdc_acm: Add quirk for Castles VEGA3000

commit 1445cbe476fc3dd09c0b380b206526a49403c071 upstream.

The device (a POS terminal) implements CDC ACM, but has not union
descriptor.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Oliver Neukum <oneukum@suse.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 3b9aadd007f5b..f2f31fc16f290 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1844,6 +1844,9 @@ static const struct usb_device_id acm_ids[] = {
 	{ USB_DEVICE(0x09d8, 0x0320), /* Elatec GmbH TWN3 */
 	.driver_info = NO_UNION_NORMAL, /* has misplaced union descriptor */
 	},
+	{ USB_DEVICE(0x0ca6, 0xa050), /* Castles VEGA3000 */
+	.driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
+	},
 
 	{ USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */
 	.driver_info = CLEAR_HALT_CONDITIONS,