From 0b1d4187c2df3e28b93ae075f58340d0efc88af8 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Tue, 23 Jan 2024 19:14:14 +0100 Subject: [PATCH] drm/virtio: Set segment size for virtio_gpu device commit 9c64e749cebd9c2d3d55261530a98bcccb83b950 upstream. Set the segment size of the virtio_gpu device to the value used by the drm helpers when allocating sg lists to fix the following complaint from DMA_API debug code: DMA-API: virtio-pci 0000:07:00.0: mapping sg segment longer than device claims to support [len=262144] [max=65536] Cc: stable@vger.kernel.org Tested-by: Zhenyu Zhang Acked-by: Vivek Kasireddy Signed-off-by: Sebastian Ott Signed-off-by: Dmitry Osipenko Link: https://patchwork.freedesktop.org/patch/msgid/7258a4cc-da16-5c34-a042-2a23ee396d56@redhat.com Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/virtio/virtgpu_drv.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c index 148f09aaf99a..c5716fd0aed3 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.c +++ b/drivers/gpu/drm/virtio/virtgpu_drv.c @@ -94,6 +94,7 @@ static int virtio_gpu_probe(struct virtio_device *vdev) goto err_free; } + dma_set_max_seg_size(dev->dev, dma_max_mapping_size(dev->dev) ?: UINT_MAX); ret = virtio_gpu_init(vdev, dev); if (ret) goto err_free;