USB: new quirk flag to avoid Set-Interface

[Chris Wright]

-stable review patch.  If anyone has any objections, please let us know.
---------------------

From: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>

upstream commit: 392e1d9817d0024c96aae237c3c4349e47c976fd

This patch (as1057) fixes a problem with the X-Rite/Gretag-Macbeth
Eye-One Pro display colorimeter; the device crashes when it receives a
Set-Interface request.  A new quirk (USB_QUIRK_NO_SET_INTF) is
introduced and a quirks entry is created for this device.

Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
[chrisw@xxxxxxxxxxxx: backport to 2.6.24.4]
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>
---
 drivers/usb/core/message.c |    5 ++++-
 drivers/usb/core/quirks.c  |    3 +++
 include/linux/usb/quirks.h |    3 +++
 3 files changed, 10 insertions(+), 1 deletion(-)

--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1189,7 +1189,10 @@ int usb_set_interface(struct usb_device 
 		return -EINVAL;
 	}
 
-	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+	if (dev->quirks & USB_QUIRK_NO_SET_INTF)
+		ret = -EPIPE;
+	else
+		ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 				   USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
 				   alternate, interface, NULL, 0, 5000);
 
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -39,6 +39,9 @@ static const struct usb_device_id usb_qu
 	/* M-Systems Flash Disk Pioneers */
 	{ USB_DEVICE(0x08ec, 0x1000), .driver_info = USB_QUIRK_RESET_RESUME },
 
+	/* X-Rite/Gretag-Macbeth Eye-One Pro display colorimeter */
+	{ USB_DEVICE(0x0971, 0x2000), .driver_info = USB_QUIRK_NO_SET_INTF },
+
 	/* Philips PSC805 audio device */
 	{ USB_DEVICE(0x0471, 0x0155), .driver_info = USB_QUIRK_RESET_RESUME },
 
--- a/include/linux/usb/quirks.h
+++ b/include/linux/usb/quirks.h
@@ -9,3 +9,6 @@
 
 /* device can't resume correctly so reset it instead */
 #define USB_QUIRK_RESET_RESUME		0x00000002
+
+/* device can't handle Set-Interface requests */
+#define USB_QUIRK_NO_SET_INTF		0x00000004

-- 
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