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Commit 15bf722e authored by Alexey Sokolov's avatar Alexey Sokolov Committed by Greg Kroah-Hartman
Browse files

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: default avatarAlexey Sokolov <sokolov@7pikes.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 19915e62

drivers/usb/class/cdc-acm.c

+9 −0
Original line number Diff line number Diff line
@@ -1467,6 +1467,11 @@ static int acm_probe(struct usb_interface *intf, 
		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

drivers/usb/class/cdc-acm.h

+1 −0
Original line number Diff line number Diff line
@@ -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)