linux-kernel - [PATCH 3.12 037/175] axonram: Fix bug in direct

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Message-Id: <3e8f58791018d51909486dc5466e2f0bb2013095.1426581621.git.jslaby@suse.cz>
Date:	Tue, 17 Mar 2015 09:40:15 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Matthew Wilcox <matthew.r.wilcox@...el.com>,
	Jens Axboe <axboe@...com>, Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 037/175] axonram: Fix bug in direct_access

From: Matthew Wilcox <matthew.r.wilcox@...el.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 91117a20245b59f70b563523edbf998a62fc6383 upstream.

The 'pfn' returned by axonram was completely bogus, and has been since
2008.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@...el.com>
Reviewed-by: Jan Kara <jack@...e.cz>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Signed-off-by: Jens Axboe <axboe@...com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 arch/powerpc/sysdev/axonram.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c
index 1c16141c031c..1fea24944ff4 100644
--- a/arch/powerpc/sysdev/axonram.c
+++ b/arch/powerpc/sysdev/axonram.c
@@ -155,7 +155,7 @@ axon_ram_direct_access(struct block_device *device, sector_t sector,
 	}
 
 	*kaddr = (void *)(bank->ph_addr + offset);
-	*pfn = virt_to_phys(kaddr) >> PAGE_SHIFT;
+	*pfn = virt_to_phys(*kaddr) >> PAGE_SHIFT;
 
 	return 0;
 }
-- 
2.3.0

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