From c5a761e2fe58631e1cd0249a729ce1934a11bcbe Mon Sep 17 00:00:00 2001 From: Robin Murphy Date: Thu, 23 Nov 2023 13:41:12 +0000 Subject: [PATCH] drm/mediatek: Stop using iommu_present() Remove the pointless check. If an IOMMU is providing transparent DMA API ops for any device(s) we care about, the DT code will have enforced the appropriate probe ordering already. And if the IOMMU *is* entirely absent, then attempting to go ahead with CMA and either suceeding or failing decisively seems more useful than deferring forever. Signed-off-by: Robin Murphy Reviewed-by: AngeloGioacchino Del Regno Link: https://patchwork.kernel.org/project/dri-devel/patch/fd1b62aa006556f29f37535814abfe41be63f7ae.1700746094.git.robin.murphy@arm.com/ Signed-off-by: Chun-Kuang Hu --- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 2dfaa613276a6..48581da51857a 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -5,7 +5,6 @@ */ #include -#include #include #include #include @@ -608,9 +607,6 @@ static int mtk_drm_bind(struct device *dev) struct drm_device *drm; int ret, i; - if (!iommu_present(&platform_bus_type)) - return -EPROBE_DEFER; - pdev = of_find_device_by_node(private->mutex_node); if (!pdev) { dev_err(dev, "Waiting for disp-mutex device %pOF\n", -- 2.30.2