This is a note to let you know that I've just added the patch titled
CDC-ACM: apply quirk for card reader
to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: cdc-acm-apply-quirk-for-card-reader.patch and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From df1cc78a52491f71d8170d513d0f6f114faa1bda Mon Sep 17 00:00:00 2001
From: Oliver Neukum oneukum@suse.com Date: Thu, 18 Jan 2018 12:13:45 +0100 Subject: CDC-ACM: apply quirk for card reader
From: Oliver Neukum oneukum@suse.com
commit df1cc78a52491f71d8170d513d0f6f114faa1bda upstream.
This devices drops random bytes from messages if you talk to it too fast.
Signed-off-by: Oliver Neukum oneukum@suse.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/usb/class/cdc-acm.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1695,6 +1695,9 @@ static const struct usb_device_id acm_id { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */ .driver_info = SINGLE_RX_URB, /* firmware bug */ }, + { USB_DEVICE(0x11ca, 0x0201), /* VeriFone Mx870 Gadget Serial */ + .driver_info = SINGLE_RX_URB, + }, { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */ .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ },
Patches currently in stable-queue which might be from oneukum@suse.com are
queue-4.4/usb-uas-unconditionally-bring-back-host-after-reset.patch queue-4.4/cdc-acm-apply-quirk-for-card-reader.patch queue-4.4/usb-cdc-acm-do-not-log-urb-submission-errors-on-disconnect.patch