Am Dienstag, 31. August 2010, 21:23:05 schrieb David Brownell: > I thought the resolution was that any HCD which > requires alignment other than 1-byte was buggy; > trying to use it would break too many drivers, > and try to spread rude constaints to too many > subsystems that don't want such stuff any more > than the USB stack (doesn't want it). True. It is a requirenment that a HCD work with any kmalloced buffer. The proposed patch does that. Two issues remain 1. Drivers mapping their own buffers. The problem here is that I am not sure we have a valid pointer which can support a copy to a bounce buffer. 2. Some drivers may want to care. Network drivers in particular might be able to employ a memmove instead of a copy. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
