linux-kernel - [PATCH] USB: serial: pl2303: fix GC type detection

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Message-Id: <20211123091017.30708-1-johan@kernel.org>
Date:   Tue, 23 Nov 2021 10:10:17 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Johan Hovold <johan@...nel.org>
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Anton Lundin <glance@....umu.se>, stable@...r.kernel.org
Subject: [PATCH] USB: serial: pl2303: fix GC type detection

At least some PL2303GC have a bcdDevice of 0x105 instead of 0x100 as the
datasheet claims. Add it to the list of known release numbers for the
HXN (G) type.

Note the chip type could only be determined indirectly based on its
package being of QFP type, which appears to only be available for
PL2303GC.

Fixes: 894758d0571d ("USB: serial: pl2303: tighten type HXN (G) detection")
Reported-by: Anton Lundin <glance@....umu.se>
Link: https://lore.kernel.org/r/20211123071613.GZ108031@montezuma.acc.umu.se
Cc: stable@...r.kernel.org	# 5.13
Signed-off-by: Johan Hovold <johan@...nel.org>
---
 drivers/usb/serial/pl2303.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index f45ca7ddf78e..a70fd86f735c 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -432,6 +432,7 @@ static int pl2303_detect_type(struct usb_serial *serial)
 	case 0x200:
 		switch (bcdDevice) {
 		case 0x100:
+		case 0x105:
 		case 0x305:
 		case 0x405:
 			/*
-- 
2.32.0