3.16.7-ckt15 -stable review patch. If anyone has any objections, please let me
know.
------------------
From: Alexey Sokolov <soko...@7pikes.com>
commit 15bf722e6f6c0b884521a0363204532e849deb7f upstream.
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 <soko...@7pikes.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Signed-off-by: Luis Henriques <luis.henriq...@canonical.com>
---
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 a8946e88978e..54c79f7fdaf5 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1480,6 +1480,11 @@ 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) {
@@ -1759,6 +1764,10 @@ 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 d3251ebd09e2..9cca2e7280bb 100644
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -134,3 +134,4 @@ 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)
--
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