linux-kernel - [PATCH] iommu/dma: fix function declaration

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Message-Id: <20170518132402.1355029-1-arnd@arndb.de>
Date:   Thu, 18 May 2017 15:13:57 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Joerg Roedel <jroedel@...e.de>
Cc:     Magnus Damm <damm+renesas@...nsource.se>,
        Arnd Bergmann <arnd@...db.de>,
        Robin Murphy <robin.murphy@....com>,
        Will Deacon <will.deacon@....com>, linux-kernel@...r.kernel.org
Subject: [PATCH] iommu/dma: fix function declaration

Newly added code in the ipmmu-vmsa driver showed a small mistake
in a header file that can't be included by itself without CONFIG_IOMMU_DMA
enabled:

In file included from drivers/iommu/ipmmu-vmsa.c:13:0:
include/linux/dma-iommu.h:105:94: error: 'struct device' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]

This adds a forward declaration for 'struct device', similar to how
we treat the other struct types in this case.

Fixes: 3ae47292024f ("iommu/ipmmu-vmsa: Add new IOMMU_DOMAIN_DMA ops")
Fixes: 273df9635385 ("iommu/dma: Make PCI window reservation generic")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 include/linux/dma-iommu.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/dma-iommu.h b/include/linux/dma-iommu.h
index 4eac2670bfa1..92f20832fd28 100644
--- a/include/linux/dma-iommu.h
+++ b/include/linux/dma-iommu.h
@@ -78,6 +78,7 @@ void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list);
 
 struct iommu_domain;
 struct msi_msg;
+struct device;
 
 static inline int iommu_dma_init(void)
 {
-- 
2.9.0