From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
To: Wojciech Macek <wmacek@chromium.org>,
Chun-Kuang Hu <chunkuang.hu@kernel.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
Matthias Brugger <matthias.bgg@gmail.com>,
dri-devel@lists.freedesktop.org,
linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
chrome-platform@lists.linux.dev
Subject: Re: [PATCH v2] drm/mediatek/dp: fix mtk_dp_aux_transfer return value
Date: Wed, 17 Apr 2024 15:52:20 +0200 [thread overview]
Message-ID: <275e760d-e4e2-4a6b-88f7-9a8590b0773b@collabora.com> (raw)
In-Reply-To: <20240417103819.990512-1-wmacek@chromium.org>
Il 17/04/24 12:38, Wojciech Macek ha scritto:
> In case there is no DP device attached to the port the
> transfer function should return IO error, similar to what
> other drivers do.
> In case EAGAIN is returned then any read from /dev/drm_dp_aux
> device ends up in an infinite loop as the upper layers
> constantly repeats the transfer request.
>
> Fixes: f70ac097a2cf ("drm/mediatek: Add MT8195 Embedded DisplayPort driver")
> Signed-off-by: Wojciech Macek <wmacek@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
WARNING: multiple messages have this Message-ID (diff)
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
To: Wojciech Macek <wmacek@chromium.org>,
Chun-Kuang Hu <chunkuang.hu@kernel.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
Matthias Brugger <matthias.bgg@gmail.com>,
dri-devel@lists.freedesktop.org,
linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
chrome-platform@lists.linux.dev
Subject: Re: [PATCH v2] drm/mediatek/dp: fix mtk_dp_aux_transfer return value
Date: Wed, 17 Apr 2024 15:52:20 +0200 [thread overview]
Message-ID: <275e760d-e4e2-4a6b-88f7-9a8590b0773b@collabora.com> (raw)
In-Reply-To: <20240417103819.990512-1-wmacek@chromium.org>
Il 17/04/24 12:38, Wojciech Macek ha scritto:
> In case there is no DP device attached to the port the
> transfer function should return IO error, similar to what
> other drivers do.
> In case EAGAIN is returned then any read from /dev/drm_dp_aux
> device ends up in an infinite loop as the upper layers
> constantly repeats the transfer request.
>
> Fixes: f70ac097a2cf ("drm/mediatek: Add MT8195 Embedded DisplayPort driver")
> Signed-off-by: Wojciech Macek <wmacek@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
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next prev parent reply other threads:[~2024-04-17 13:52 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-17 10:38 [PATCH v2] drm/mediatek/dp: fix mtk_dp_aux_transfer return value Wojciech Macek
2024-04-17 10:38 ` Wojciech Macek
2024-04-17 13:52 ` AngeloGioacchino Del Regno [this message]
2024-04-17 13:52 ` AngeloGioacchino Del Regno
2024-04-18 2:01 ` CK Hu (胡俊光)
2024-04-18 2:01 ` CK Hu (胡俊光)
2024-04-18 2:01 ` CK Hu (胡俊光)
2024-05-27 2:55 ` patchwork-bot+chrome-platform
2024-05-27 2:55 ` patchwork-bot+chrome-platform
2024-05-27 3:07 ` patchwork-bot+chrome-platform
2024-05-27 3:07 ` patchwork-bot+chrome-platform
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