This is a note to let you know that I've just added the patch titled
cdc-acm: Add support of ATOL FPrint fiscal printers
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-testing branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will be merged to the usb-next branch sometime soon,
after it passes testing, and the merge window is open.
If you have any questions about this process, please let me know.
>From 15bf722e6f6c0b884521a0363204532e849deb7f Mon Sep 17 00:00:00 2001
From: Alexey Sokolov <[email protected]>
Date: Tue, 2 Jun 2015 11:49:30 +0300
Subject: cdc-acm: Add support of ATOL FPrint fiscal printers
ATOL FPrint fiscal printers require usb_clear_halt to be executed
to work properly. Add quirk to fix the issue.
Signed-off-by: Alexey Sokolov <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/class/cdc-acm.c | 9 +++++++++
drivers/usb/class/cdc-acm.h | 1 +
2 files changed, 10 insertions(+)
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index eb22a0608033..519a77ba214c 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1467,6 +1467,11 @@ skip_countries:
goto alloc_fail8;
}
+ if (quirks & CLEAR_HALT_CONDITIONS) {
+ usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev,
epread->bEndpointAddress));
+ usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev,
epwrite->bEndpointAddress));
+ }
+
return 0;
alloc_fail8:
if (acm->country_codes) {
@@ -1746,6 +1751,10 @@ static const struct usb_device_id acm_ids[] = {
.driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
},
+ { USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */
+ .driver_info = CLEAR_HALT_CONDITIONS,
+ },
+
/* Nokia S60 phones expose two ACM channels. The first is
* a modem and is picked up by the standard AT-command
* information below. The second is 'vendor-specific' but
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
index a9e68ce25425..dd9af38e7cda 100644
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -133,3 +133,4 @@ struct acm {
#define NO_DATA_INTERFACE BIT(4)
#define IGNORE_DEVICE BIT(5)
#define QUIRK_CONTROL_LINE_STATE BIT(6)
+#define CLEAR_HALT_CONDITIONS BIT(7)
--
2.4.2
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