linux-kernel - [PATCH 5.13 078/175] USB: serial: pl2303: fix GT type detection

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Message-Id: <20210810173003.507377531@linuxfoundation.org>
Date:   Tue, 10 Aug 2021 19:29:46 +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, Vasily Khoruzhick <anarsoul@...il.com>,
        Johan Hovold <johan@...nel.org>
Subject: [PATCH 5.13 078/175] USB: serial: pl2303: fix GT type detection

From: Johan Hovold <johan@...nel.org>

commit 3212a99349cee5fb611d3ffcf0e65bc3cd6dcf2f upstream.

At least some PL2303GT have a bcdDevice of 0x305 instead of 0x100 as the
datasheet claims. Add it to the list of known release numbers for the
HXN (G) type.

Fixes: 894758d0571d ("USB: serial: pl2303: tighten type HXN (G) detection")
Reported-by: Vasily Khoruzhick <anarsoul@...il.com>
Tested-by: Vasily Khoruzhick <anarsoul@...il.com>
Cc: stable@...r.kernel.org	# 5.13
Link: https://lore.kernel.org/r/20210804093100.24811-1-johan@kernel.org
Signed-off-by: Johan Hovold <johan@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/usb/serial/pl2303.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -432,6 +432,7 @@ static int pl2303_detect_type(struct usb
 	case 0x200:
 		switch (bcdDevice) {
 		case 0x100:
+		case 0x305:
 			/*
 			 * Assume it's an HXN-type if the device doesn't
 			 * support the old read request value.