From 2b2812961302c38500c1027778e371c895f1cac4 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Tue, 25 Dec 2018 14:03:32 +0100
Subject: [PATCH] device.h: dma_mem is only needed for
 HAVE_GENERIC_DMA_COHERENT

No need to carry an unused field around.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/device.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/device.h b/include/linux/device.h
index 6cb4640b61606..be544400acdd9 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -1017,8 +1017,10 @@ struct device {
 
 	struct list_head	dma_pools;	/* dma pools (if dma'ble) */
 
+#ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT
 	struct dma_coherent_mem	*dma_mem; /* internal for coherent mem
 					     override */
+#endif
 #ifdef CONFIG_DMA_CMA
 	struct cma *cma_area;		/* contiguous memory area for dma
 					   allocations */
-- 
2.30.2