linux-kernel - [PATCH 1/4 v4] axonram: Fix bug in direct

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Date:	Wed, 07 Jan 2015 18:04:18 +0200
From:	Boaz Harrosh <boaz@...xistor.com>
To:	Jens Axboe <axboe@...com>, Matthew Wilcox <willy@...ux.intel.com>,
	Dmitry Monakhov <dmonakhov@...nvz.org>
CC:	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	"Martin K. Petersen" <martin.petersen@...cle.com>
Subject: [PATCH 1/4 v4] axonram: Fix bug in direct_access

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

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>
Cc: stable@...r.kernel.org
---
 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 f532c92..367533b 100644
--- a/arch/powerpc/sysdev/axonram.c
+++ b/arch/powerpc/sysdev/axonram.c
@@ -156,7 +156,7 @@ 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;
 }
-- 
1.9.3


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