linux-kernel - [PATCH 02/12] device.h: dma_mem is only needed for HAVE_GENERIC_DMA

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Message-Id: <20190211133554.30055-3-hch@lst.de>
Date:   Mon, 11 Feb 2019 14:35:44 +0100
From:   Christoph Hellwig <hch@....de>
To:     iommu@...ts.linux-foundation.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Lee Jones <lee.jones@...aro.org>, x86@...nel.org,
        linux-snps-arc@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-mips@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-riscv@...ts.infradead.org,
        linux-sh@...r.kernel.org, linux-xtensa@...ux-xtensa.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 02/12] 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@....de>
---
 include/linux/device.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/device.h b/include/linux/device.h
index 6cb4640b6160..be544400acdd 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 */
-- 
2.20.1