Re: bug in handling of highspeed usb HID devices
From: Parag Warudkar
Date: Thu Oct 13 2005 - 21:18:20 EST
> Also, what device needs this patch? Is it a device that I can buy
> greg k-h
The patch is for hid-core.c - I don't think it is device specific - original problem
should affect all High Speed USB HID devices.
To summarize -
Current code just looks plain wrong since the same logic is repeated twice - endpoint->bInterval is operated upon twice if the device is HIGH SPEED one.
if (dev->speed == USB_SPEED_HIGH)
interval = 1 << (interval - 1);
This is first done in hid-code.c:usb_hid_configure() which then passes interval to usb.h:usb_fill_int_urb() which again repeats the same logic as above!
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