From e2b31071738264586d43d8c286d6528e397c24fa Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Wed, 15 Jan 2025 11:03:39 +0200 Subject: [PATCH] drm: xlnx: zynqmp: Fix max dma segment size [ Upstream commit 28b529a98525123acd37372a04d21e87ec2edcf7 ] Fix "mapping sg segment longer than device claims to support" warning by setting the max segment size. Fixes: d76271d22694 ("drm: xlnx: DRM/KMS driver for Xilinx ZynqMP DisplayPort Subsystem") Reviewed-by: Sean Anderson Tested-by: Sean Anderson Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/20250115-xilinx-formats-v2-10-160327ca652a@ideasonboard.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/xlnx/zynqmp_dpsub.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c index f5781939de9c..a25b22238e3d 100644 --- a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c +++ b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c @@ -231,6 +231,8 @@ static int zynqmp_dpsub_probe(struct platform_device *pdev) if (ret) return ret; + dma_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32)); + /* Try the reserved memory. Proceed if there's none. */ of_reserved_mem_device_init(&pdev->dev);