From 376c6f62f8d4f73a0573a0e69323afe39d834893 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Wed, 4 Oct 2017 15:51:29 +0200
Subject: [PATCH] fix xen_swiotlb_dma_mmap prototype
xen_swiotlb_dma_mmap was backported from v4.10, but older
kernels before commit 00085f1efa38 ("dma-mapping: use unsigned long
for dma_attrs") use a different signature:
arm/xen/mm.c:202:10: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
.mmap = xen_swiotlb_dma_mmap,
^~~~~~~~~~~~~~~~~~~~
arm/xen/mm.c:202:10: note: (near initialization for 'xen_swiotlb_dma_ops.mmap')
This adapts the patch to the old calling conventions.
Fixes: "swiotlb-xen: implement xen_swiotlb_dma_mmap callback"
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/xen/swiotlb-xen.c | 2 +-
include/xen/swiotlb-xen.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index a0a819c5fc1f9..c6d47e5584885 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -693,7 +693,7 @@ EXPORT_SYMBOL_GPL(xen_swiotlb_set_dma_mask);
int
xen_swiotlb_dma_mmap(struct device *dev, struct vm_area_struct *vma,
void *cpu_addr, dma_addr_t dma_addr, size_t size,
- unsigned long attrs)
+ struct dma_attrs *attrs)
{
#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
if (__generic_dma_ops(dev)->mmap)
diff --git a/include/xen/swiotlb-xen.h b/include/xen/swiotlb-xen.h
index fab4fb9c6442d..4d7fdbf20eff3 100644
--- a/include/xen/swiotlb-xen.h
+++ b/include/xen/swiotlb-xen.h
@@ -62,5 +62,5 @@ xen_swiotlb_set_dma_mask(struct device *dev, u64 dma_mask);
extern int
xen_swiotlb_dma_mmap(struct device *dev, struct vm_area_struct *vma,
void *cpu_addr, dma_addr_t dma_addr, size_t size,
- unsigned long attrs);
+ struct dma_attrs *attrs);
#endif /* __LINUX_SWIOTLB_XEN_H */