diff --git a/drivers/gpu/drm/msm/msm_iommu.c b/drivers/gpu/drm/msm/msm_iommu.c
index 897e42c8d5c8..da6782fca6bd 100644
--- a/drivers/gpu/drm/msm/msm_iommu.c
+++ b/drivers/gpu/drm/msm/msm_iommu.c
@@ -7,6 +7,15 @@
 #include <linux/adreno-smmu-priv.h>
 #include <linux/io-pgtable.h>
 #include <linux/kmemleak.h>
+
+#if defined(CONFIG_ARM_DMA_USE_IOMMU)
+#include <asm/dma-iommu.h>
+#else
+#define arm_iommu_detach_device(...)	({ })
+#define arm_iommu_release_mapping(...)	({ })
+#define to_dma_iommu_mapping(dev)	NULL
+#endif
+
 #include "msm_drv.h"
 #include "msm_gpu_trace.h"
 #include "msm_mmu.h"
@@ -749,6 +758,19 @@ struct msm_mmu *msm_iommu_new(struct device *dev, unsigned long quirks)
 
 	mutex_init(&iommu->init_lock);
 
+	/*
+	 * ARM32 attaches a DMA mapping domain to every IOMMU-backed device,
+	 * which would make attaching our own domain fail with -EBUSY.
+	 */
+	if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) {
+		struct dma_iommu_mapping *mapping = to_dma_iommu_mapping(dev);
+
+		if (mapping) {
+			arm_iommu_detach_device(dev);
+			arm_iommu_release_mapping(mapping);
+		}
+	}
+
 	ret = iommu_attach_device(iommu->domain, dev);
 	if (ret) {
 		iommu_domain_free(domain);