diff options
| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2024-01-04 14:16:39 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-04 16:05:50 +0100 |
| commit | 017dbfc05c31284150819890b4cc86a699cbdb71 (patch) | |
| tree | 0621d25ada82e0bf16f9c613bc278ddf578cf97e /drivers/usb/host/xhci-mtk.h | |
| parent | 223b4ef5a3b75c4500facf07f99a925232eaf113 (diff) | |
usb: xhci-mtk: fix a short packet issue of gen1 isoc-in transfer
For Gen1 isoc-in transfer, host still send out unexpected ACK after device
finish the burst with a short packet, this will cause an exception on the
connected device, such as, a usb 4k camera.
It can be fixed by setting rxfifo depth less than 4k bytes, prefer to use
3k here, the side-effect is that may cause performance drop about 10%,
including bulk transfer.
Fixes: 926d60ae64a6 ("usb: xhci-mtk: modify the SOF/ITP interval for mt8195")
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/20240104061640.7335-2-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci-mtk.h')
| -rw-r--r-- | drivers/usb/host/xhci-mtk.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-mtk.h b/drivers/usb/host/xhci-mtk.h index 39f7ae7d3087..f5e2bd66bb1b 100644 --- a/drivers/usb/host/xhci-mtk.h +++ b/drivers/usb/host/xhci-mtk.h @@ -171,6 +171,8 @@ struct xhci_hcd_mtk { struct regmap *uwk; u32 uwk_reg_base; u32 uwk_vers; + /* quirk */ + u32 rxfifo_depth; }; static inline struct xhci_hcd_mtk *hcd_to_mtk(struct usb_hcd *hcd) |