From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 9 Jan 2016 07:16:04 +0000 (-0500)
Subject: [s390] page_to_phys() always returns a multiple of PAGE_SIZE
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=bdb97e91e0140230bda9a83f6dbaa29b0c2e0522;p=linux-beck.git

[s390] page_to_phys() always returns a multiple of PAGE_SIZE

Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c
index d348f2c09a1e..32da0a6ecec2 100644
--- a/arch/s390/pci/pci_dma.c
+++ b/arch/s390/pci/pci_dma.c
@@ -366,8 +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,
-				 size, DMA_BIDIRECTIONAL, NULL);
+	map = s390_dma_map_pages(dev, page, 0, size, DMA_BIDIRECTIONAL, NULL);
 	if (dma_mapping_error(dev, map)) {
 		free_pages(pa, get_order(size));
 		return NULL;