tree f3f4c128dbfe927bea1935a81c84c7b493707a4d
parent 527101ce6a96c037a2555aa43222faa6fdd21e97
author Alan Stern <stern@rowland.harvard.edu> 1248288257 -0400
committer Greg Kroah-Hartman <gregkh@suse.de> 1253713590 -0700

USB: dummy-hcd: accept mismatch between wLength and transfer length

This patch (as1269) fixes a bug in the way dummy_hcd handles control
URBs.  Currently it returns a -EOVERFLOW error if the wLength value in
the setup packet is different from the URB's transfer_buffer_length.

Other host controller drivers don't do this.  There's no reason the
two length values have to be equal, and in fact they sometimes aren't
-- a driver might set the transfer length to the maxpacket value in
order to handle buggy devices that don't respect wLength.

This patch simply removes the unnecessary check and error return.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>