Hi Ran,
On Mon, Nov 30, 2020 at 9:42 AM Ran Wang ran.wang_1@nxp.com wrote:
Hi Marek, Bin,
On Wednesday, November 18, 2020 3:49 PM, Ran Wang wrote:
For bulk IN transfer, the codes will set ISP flag to request event TRB being generated by xHC for the case of short packet. So when encountering buffer-cross-64K-boundary (which we will divide payload and enqueuqe more than 1 transfer TRB), and the first TRB ends up with a short packet condition it will trigger an short packet code transfer event per that flag and cause more than 1 event TRB generated for this transfer.
However, current codes will only handle the first transfer event TRB then mark current transfer completed, causing next transfer failure due to event TRB mis-match.
Such issue has been observed on some Layerscape platforms (LS1028A, LS1088A, etc) with USB ethernet device.
This patch adds a loop to make sure the event TRB for last transfer TRB has been handled in time.
Signed-off-by: Ran Wang ran.wang_1@nxp.com Reviewed-by: Bin Meng bmeng.cn@gmail.com
Change in v4:
- Update commit message: 'for case of short packet' => 'for the case of short
packet'
Has this v4 patch been accepted?
I believe Marek will apply this patch.
Regards, Bin