From be7de823847bd136ff5db095cb9a4283b9630bba Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Mon, 4 Nov 2024 09:47:54 +0200 Subject: [PATCH] media: raspberrypi: cfe: Fix mapping of dmabuf buffers When using buffers from DRM, DMA-API gives a warning about: "mapping sg segment longer than device claims to support [len=307200] [max=65536]" Add a call to vb2_dma_contig_set_max_seg_size() to tell the DMA-API about the supported segment size (which is UINT_MAX). Fixes: 6edb685abb2a ("media: raspberrypi: Add support for RP1-CFE") Reviewed-by: Laurent Pinchart Signed-off-by: Tomi Valkeinen Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil --- drivers/media/platform/raspberrypi/rp1-cfe/cfe.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/media/platform/raspberrypi/rp1-cfe/cfe.c b/drivers/media/platform/raspberrypi/rp1-cfe/cfe.c index 4800d9a2668a..12660087b12f 100644 --- a/drivers/media/platform/raspberrypi/rp1-cfe/cfe.c +++ b/drivers/media/platform/raspberrypi/rp1-cfe/cfe.c @@ -2340,6 +2340,10 @@ static int cfe_probe(struct platform_device *pdev) goto err_cfe_put; } + ret = vb2_dma_contig_set_max_seg_size(&pdev->dev, UINT_MAX); + if (ret) + goto err_cfe_put; + /* TODO: Enable clock only when running. */ cfe->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(cfe->clk)) { -- 2.25.1