linux-kernel - [POC][PATCH 70/83] s390_dma_alloc(): page_to_phys() result is always a multiple of PAGE

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Message-Id: <1450741676-5865-70-git-send-email-viro@ZenIV.linux.org.uk>
Date:	Mon, 21 Dec 2015 23:47:43 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	linux-kernel@...r.kernel.org
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [POC][PATCH 70/83] s390_dma_alloc(): page_to_phys() result is always a multiple of PAGE_SIZE

From: Al Viro <viro@...iv.linux.org.uk>

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 arch/s390/pci/pci_dma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c
index 5a15471..afa4be1 100644
--- a/arch/s390/pci/pci_dma.c
+++ b/arch/s390/pci/pci_dma.c
@@ -366,7 +366,7 @@ static void *s390_dma_alloc(struct device *dev, size_t size,
 	pa = page_to_phys(page);
 	memset((void *) pa, 0, size);
 
-	map = s390_dma_map_pages(dev, page, pa % PAGE_SIZE,
+	map = s390_dma_map_pages(dev, page, 0,
 				 size, DMA_BIDIRECTIONAL, NULL);
 	if (dma_mapping_error(dev, map)) {
 		free_pages((void *)pa, get_order(size));
-- 
2.1.4

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