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Subject[PATCH] media: rcar-vin: Drop min_queued_buffers
From: Jacopo Mondi <jacopo.mondi+renesas@ideasonboard.com>

The R-Car VIN driver already uses a scratch buffer to sustain capture
operations in absence of a frame buffer provided by userspace.

There is no reason to require 4 buffers queued at all times for the
driver to operate. Drop min_queued_buffers from the VIN driver to allow
single-frame capture operations.

Signed-off-by: Jacopo Mondi <jacopo.mondi+renesas@ideasonboard.com>
---
This allows to capture a single frame when the R-Car VIN is used
to feed the R-Car ISP on R-Car V4H.

Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
---
drivers/media/platform/renesas/rcar-vin/rcar-dma.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c
index f9af9177e02f..73cda0e2d45a 100644
--- a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c
@@ -1494,7 +1494,6 @@ int rvin_dma_register(struct rvin_dev *vin, int irq)
q->ops = &rvin_qops;
q->mem_ops = &vb2_dma_contig_memops;
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
- q->min_queued_buffers = 4;
q->dev = vin->dev;

ret = vb2_queue_init(q);
---
base-commit: d9c8c4adf23d17549c0ec9c85b99d85a0ee6cf18
change-id: 20260504-rcar-vin-min-queued-buffs-31891f226fe6
Best regards,
--
Jacopo Mondi <jacopo.mondi@ideasonboard.com>


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