Guoniu ZhouandGreg Kroah-Hartman da4ef5c2ce media: nxp: imx8-isi: Reduce minimum queued buffers from 2 to 0 ...

commit 2f38622d0f upstream.

Fix a hang issue when capturing a single frame with applications like cam
in libcamera. It would hang waiting for the driver to complete the buffer,
but streaming never starts because min_queued_buffers was set to 2.

The ISI module uses a ping-pong buffer mechanism that requires two buffers
to be programmed at all times. However, when fewer than 2 user buffers are
available, the driver use internal discard buffers to fill the remaining
slot(s). Reduce minimum queued buffers from 2 to 0 allows streaming to
start without any queued buffers.

Fixes: cf21f328fc ("media: nxp: Add i.MX8 ISI driver")
Cc: stable@vger.kernel.org
Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260312-isi_min_buffers-v2-1-d5ea1c79ad81@nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2026-05-17 17:14:27 +02:00

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dw100

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imx8-isi

media: nxp: imx8-isi: Reduce minimum queued buffers from 2 to 0

2026-05-17 17:14:27 +02:00

imx-jpeg

media: imx-jpeg: Cleanup after an allocation error

2025-06-27 11:11:18 +01:00

imx7-media-csi.c

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imx8mq-mipi-csi2.c

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imx-mipi-csis.c

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imx-pxp.c

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imx-pxp.h

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Kconfig

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Makefile

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mx2_emmaprp.c

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