This patch (as872) adds a device table entry and a new quirk flag to
the usblp driver for the Seiko Epson Receipt printer. This printer
returns Vendor-Specific values for bInterfaceClass and
bInterfaceSubClass, but the bInterfaceProtocol value is valid and it
works with usblp. The new quirks flag tells the driver to ignore the
Class and SubClass values in the interface descriptor.
Signed-off-by: Alan Stern <[EMAIL PROTECTED]>
CC: Vojtech Pavlik <[EMAIL PROTECTED]>
---
Index: usb-2.6/drivers/usb/class/usblp.c
===================================================================
--- usb-2.6.orig/drivers/usb/class/usblp.c
+++ usb-2.6/drivers/usb/class/usblp.c
@@ -202,6 +202,7 @@ struct quirk_printer_struct {
#define USBLP_QUIRK_BIDIR 0x1 /* reports bidir but requires
unidirectional mode (no INs/reads) */
#define USBLP_QUIRK_USB_INIT 0x2 /* needs vendor USB init string */
+#define USBLP_QUIRK_BAD_CLASS 0x4 /* descriptor uses vendor-specific
Class or SubClass */
static const struct quirk_printer_struct quirk_printers[] = {
{ 0x03f0, 0x0004, USBLP_QUIRK_BIDIR }, /* HP DeskJet 895C */
@@ -218,6 +219,7 @@ static const struct quirk_printer_struct
{ 0x0409, 0xf0be, USBLP_QUIRK_BIDIR }, /* NEC Picty920 (HP OEM) */
{ 0x0409, 0xf1be, USBLP_QUIRK_BIDIR }, /* NEC Picty800 (HP OEM) */
{ 0x0482, 0x0010, USBLP_QUIRK_BIDIR }, /* Kyocera Mita FS 820, by zut
<[EMAIL PROTECTED]> */
+ { 0x04b8, 0x0202, USBLP_QUIRK_BAD_CLASS }, /* Seiko Epson Receipt
Printer M129C */
{ 0, 0 }
};
@@ -1048,7 +1050,8 @@ static int usblp_select_alts(struct usbl
ifd = &if_alt->altsetting[i];
if (ifd->desc.bInterfaceClass != 7 ||
ifd->desc.bInterfaceSubClass != 1)
- continue;
+ if (!(usblp->quirks & USBLP_QUIRK_BAD_CLASS))
+ continue;
if (ifd->desc.bInterfaceProtocol < USBLP_FIRST_PROTOCOL ||
ifd->desc.bInterfaceProtocol > USBLP_LAST_PROTOCOL)
@@ -1232,6 +1235,7 @@ static struct usb_device_id usblp_ids []
{ USB_INTERFACE_INFO(7, 1, 1) },
{ USB_INTERFACE_INFO(7, 1, 2) },
{ USB_INTERFACE_INFO(7, 1, 3) },
+ { USB_DEVICE(0x04b8, 0x0202) }, /* Seiko Epson Receipt Printer M129C */
{ } /* Terminating entry */
};
-------------------------------------------------------------------------
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