This is a note to let you know that I've just added the patch titled
USB: serial: pl2303: add support for more HXN (G) types
to the 5.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-serial-pl2303-add-support-for-more-hxn-g-types.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ae60aac59a9ad8ab64a4b07de509a534a75b6bac Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@xxxxxxxxxx>
Date: Tue, 21 Jun 2022 10:58:55 +0200
Subject: USB: serial: pl2303: add support for more HXN (G) types
From: Johan Hovold <johan@xxxxxxxxxx>
commit ae60aac59a9ad8ab64a4b07de509a534a75b6bac upstream.
Add support for further HXN (G) type devices (GT variant, GL variant, GS
variant and GR) and document the bcdDevice mapping.
Note that the TA and TB types use the same bcdDevice as some GT and GE
variants, respectively, but that the HX status request can be used to
determine which is which.
Also note that we currently do not distinguish between the various HXN
(G) types in the driver but that this may change eventually (e.g. when
adding GPIO support).
Reported-by: Charles Yeh <charlesyeh522@xxxxxxxxx>
Link: https://lore.kernel.org/r/YrF77b9DdeumUAee@xxxxxxxxxxxxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx # 5.13
Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/serial/pl2303.c | 29 +++++++++++++++++------------
1 file changed, 17 insertions(+), 12 deletions(-)
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -436,22 +436,27 @@ static int pl2303_detect_type(struct usb
break;
case 0x200:
switch (bcdDevice) {
- case 0x100:
+ case 0x100: /* GC */
case 0x105:
+ return TYPE_HXN;
+ case 0x300: /* GT / TA */
+ if (pl2303_supports_hx_status(serial))
+ return TYPE_TA;
+ fallthrough;
case 0x305:
+ case 0x400: /* GL */
case 0x405:
+ return TYPE_HXN;
+ case 0x500: /* GE / TB */
+ if (pl2303_supports_hx_status(serial))
+ return TYPE_TB;
+ fallthrough;
+ case 0x505:
+ case 0x600: /* GS */
case 0x605:
- /*
- * Assume it's an HXN-type if the device doesn't
- * support the old read request value.
- */
- if (!pl2303_supports_hx_status(serial))
- return TYPE_HXN;
- break;
- case 0x300:
- return TYPE_TA;
- case 0x500:
- return TYPE_TB;
+ case 0x700: /* GR */
+ case 0x705:
+ return TYPE_HXN;
}
break;
}
Patches currently in stable-queue which might be from johan@xxxxxxxxxx are
queue-5.18/usb-serial-pl2303-add-support-for-more-hxn-g-types.patch
queue-5.18/usb-serial-option-add-telit-le910cx-0x1250-composition.patch
queue-5.18/usb-serial-option-add-quectel-em05-g-modem.patch
queue-5.18/usb-serial-option-add-quectel-rm500k-module-support.patch
