linux-kernel - [PATCH 4.4 59/73] swiotlb: Make linux/swiotlb.h standalone includible

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Date:   Mon,  8 Jul 2019 17:13:09 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Thierry Reding <treding@...dia.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.4 59/73] swiotlb: Make linux/swiotlb.h standalone includible

[ Upstream commit 386744425e35e04984c6e741c7750fd6eef1a9df ]

This header file uses the enum dma_data_direction and struct page types
without explicitly including the corresponding header files. This makes
it rely on the includer to have included the proper headers before.

To fix this, include linux/dma-direction.h and forward-declare struct
page. The swiotlb_free() function is also annotated __init, therefore
requires linux/init.h to be included as well.

Signed-off-by: Thierry Reding <treding@...dia.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 include/linux/swiotlb.h |    3 +++
 1 file changed, 3 insertions(+)

--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -1,10 +1,13 @@
 #ifndef __LINUX_SWIOTLB_H
 #define __LINUX_SWIOTLB_H
 
+#include <linux/dma-direction.h>
+#include <linux/init.h>
 #include <linux/types.h>
 
 struct device;
 struct dma_attrs;
+struct page;
 struct scatterlist;
 
 extern int swiotlb_force;