From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
To: Chunfeng Yun <chunfeng.yun@mediatek.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Conor Dooley <conor+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Mathias Nyman <mathias.nyman@intel.com>,
linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Eddie Hung <eddie.hung@mediatek.com>,
Macpaul Lin <macpaul.lin@mediatek.com>,
stable@vger.kernel.org
Subject: Re: [PATCH v3 2/3] usb: xhci-mtk: fix a short packet issue of gen1 isoc-in transfer
Date: Wed, 20 Dec 2023 11:30:40 +0100 [thread overview]
Message-ID: <9ebfe163-c86a-4aca-8f60-179a218821b4@collabora.com> (raw)
In-Reply-To: <20231220025842.7082-2-chunfeng.yun@mediatek.com>
Il 20/12/23 03:58, Chunfeng Yun ha scritto:
> 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")
> Cc: stable@vger.kernel.org
> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
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next prev parent reply other threads:[~2023-12-20 10:31 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-20 2:58 [PATCH v3 1/3] dt-bindings: usb: mtk-xhci: add a property for Gen1 isoc-in transfer issue Chunfeng Yun
2023-12-20 2:58 ` [PATCH v3 2/3] usb: xhci-mtk: fix a short packet issue of gen1 isoc-in transfer Chunfeng Yun
2023-12-20 5:57 ` Greg Kroah-Hartman
2023-12-27 1:58 ` Chunfeng Yun (云春峰)
2023-12-20 10:30 ` AngeloGioacchino Del Regno [this message]
2023-12-20 2:58 ` [PATCH v3 3/3] arm64: dts: mediatek: mt8195: Add 'rx-fifo-depth' for cherry Chunfeng Yun
2023-12-20 10:30 ` AngeloGioacchino Del Regno
2023-12-27 1:59 ` Chunfeng Yun (云春峰)
2023-12-20 7:38 ` [PATCH v3 1/3] dt-bindings: usb: mtk-xhci: add a property for Gen1 isoc-in transfer issue Krzysztof Kozlowski
2023-12-20 10:40 ` AngeloGioacchino Del Regno
2023-12-27 2:08 ` Chunfeng Yun (云春峰)
2023-12-27 2:03 ` Chunfeng Yun (云春峰)
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