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SubjectUSB: new quirk flag to avoid Set-Interface
-stable review patch.  If anyone has any objections, please let us know.
---------------------
From: Alan Stern <stern@rowland.harvard.edu>

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@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
[chrisw@sous-sol.org: backport to 2.6.24.4]
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
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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