linux-kernel - [PATCH v3 04/11] swiotlb-xen: add struct device * parameter to xen_bus_to

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Message-Id: <20200710223427.6897-4-sstabellini@kernel.org>
Date:   Fri, 10 Jul 2020 15:34:20 -0700
From:   Stefano Stabellini <sstabellini@...nel.org>
To:     jgross@...e.com, boris.ostrovsky@...cle.com, konrad.wilk@...cle.com
Cc:     sstabellini@...nel.org, xen-devel@...ts.xenproject.org,
        linux-kernel@...r.kernel.org, hch@...radead.org,
        Stefano Stabellini <stefano.stabellini@...inx.com>
Subject: [PATCH v3 04/11] swiotlb-xen: add struct device * parameter to xen_bus_to_phys

From: Stefano Stabellini <stefano.stabellini@...inx.com>

No functional changes. The parameter is unused in this patch but will be
used by next patches.

Signed-off-by: Stefano Stabellini <stefano.stabellini@...inx.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>
Tested-by: Corey Minyard <cminyard@...sta.com>
Tested-by: Roman Shaposhnik <roman@...eda.com>
---
Changes in v3:
- add whitespace in title
- improve commit message
---
 drivers/xen/swiotlb-xen.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index dbe710a59bf2..a8e447137faf 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -67,7 +67,7 @@ static inline dma_addr_t xen_phys_to_bus(struct device *dev, phys_addr_t paddr)
 	return dma;
 }
 
-static inline phys_addr_t xen_bus_to_phys(dma_addr_t baddr)
+static inline phys_addr_t xen_bus_to_phys(struct device *dev, dma_addr_t baddr)
 {
 	unsigned long xen_pfn = bfn_to_pfn(XEN_PFN_DOWN(baddr));
 	dma_addr_t dma = (dma_addr_t)xen_pfn << XEN_PAGE_SHIFT;
@@ -339,7 +339,7 @@ xen_swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
 
 	/* do not use virt_to_phys because on ARM it doesn't return you the
 	 * physical address */
-	phys = xen_bus_to_phys(dev_addr);
+	phys = xen_bus_to_phys(hwdev, dev_addr);
 
 	/* Convert the size to actually allocated. */
 	size = 1UL << (order + XEN_PAGE_SHIFT);
@@ -423,7 +423,7 @@ static dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
 static void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
 		size_t size, enum dma_data_direction dir, unsigned long attrs)
 {
-	phys_addr_t paddr = xen_bus_to_phys(dev_addr);
+	phys_addr_t paddr = xen_bus_to_phys(hwdev, dev_addr);
 
 	BUG_ON(dir == DMA_NONE);
 
@@ -439,7 +439,7 @@ static void
 xen_swiotlb_sync_single_for_cpu(struct device *dev, dma_addr_t dma_addr,
 		size_t size, enum dma_data_direction dir)
 {
-	phys_addr_t paddr = xen_bus_to_phys(dma_addr);
+	phys_addr_t paddr = xen_bus_to_phys(dev, dma_addr);
 
 	if (!dev_is_dma_coherent(dev))
 		xen_dma_sync_for_cpu(dma_addr, paddr, size, dir);
@@ -452,7 +452,7 @@ static void
 xen_swiotlb_sync_single_for_device(struct device *dev, dma_addr_t dma_addr,
 		size_t size, enum dma_data_direction dir)
 {
-	phys_addr_t paddr = xen_bus_to_phys(dma_addr);
+	phys_addr_t paddr = xen_bus_to_phys(dev, dma_addr);
 
 	if (is_xen_swiotlb_buffer(dma_addr))
 		swiotlb_tbl_sync_single(dev, paddr, size, dir, SYNC_FOR_DEVICE);
-- 
2.17.1