[PATCH] drm/mediatek: Stop using iommu_present()

[Robin Murphy]

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.

Signed-off-by: Robin Murphy <robin.murphy at arm.com>
---
 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 247c6ff277ef..2de31746a308 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -5,7 +5,6 @@
  */
 
 #include <linux/component.h>
-#include <linux/iommu.h>
 #include <linux/module.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
@@ -239,9 +238,6 @@ static int mtk_drm_kms_init(struct drm_device *drm)
 	if (drm_firmware_drivers_only())
 		return -ENODEV;
 
-	if (!iommu_present(&platform_bus_type))
-		return -EPROBE_DEFER;
-
 	pdev = of_find_device_by_node(private->mutex_node);
 	if (!pdev) {
 		dev_err(drm->dev, "Waiting for disp-mutex device %pOF\n",
-- 
2.28.0.dirty