On Fri, Aug 22, 2014 at 04:32:10PM +0530, Kishon Vijay Abraham I wrote:
Hi,
On Tuesday 19 August 2014 09:57 PM, Felipe Balbi wrote:
On Tue, Aug 19, 2014 at 09:45:11PM +0530, Kishon Vijay Abraham I wrote:
Hi,
On Monday 18 August 2014 08:11 PM, Felipe Balbi wrote:
On Mon, Aug 18, 2014 at 07:58:35PM +0530, Kishon Vijay Abraham I wrote:
Bounce buffer is used for transferring requests which is not maxpacket aligned. In the case of DFU the requests can be upto 4096 bytes.
While the actual fix for this should be using two chained TRBs to handle the transfer, this can be used as a temporary fix.
Did you manage to trigger this fault ? Was the size larger than 512 ?
yeah.. transferring any kernel image resulted in a size larger than 512.
but it's also larger than 4KiB :-)
Yeah. But the DFU specifies the maximum transfer size in wTransferSize (DFU function descriptor) to the host which is 4096 bytes (DFU_USB_BUFSIZ).
So the max size will be only 4KB.
ah, ok. Thanks for that detail.