This patch (as851) fixes a bug introduced when the USB ID matching
code was refactored. If any of the device-level matches fail we
should reject right away. Instead, when none of the device-level
matches fail the current code accepts right away.
Signed-off-by: Alan Stern <[EMAIL PROTECTED]>
---
Greg:
I realized that this really is a bug. Consider for example the
USB_INTERFACE_INFO() macro. It creates match entries that specify only
interface-level values, not device-level values. So usb_match_device()
will not find any mismatches and will return 1. At that point you don't
want to accept immediately; you want to go on and test for interface-level
mismatches.
Alan Stern
Index: usb-2.6/drivers/usb/core/driver.c
===================================================================
--- usb-2.6.orig/drivers/usb/core/driver.c
+++ usb-2.6/drivers/usb/core/driver.c
@@ -415,8 +415,8 @@ int usb_match_one_id(struct usb_interfac
intf = interface->cur_altsetting;
dev = interface_to_usbdev(interface);
- if (usb_match_device(dev, id))
- return 1;
+ if (!usb_match_device(dev, id))
+ return 0;
/* The interface class, subclass, and protocol should never be
* checked for a match if the device class is Vendor Specific,
-------------------------------------------------------------------------
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