[PATCH 3.4 007/172] axonram: Fix bug in direct_access

lizf
2015-06-16T08:38:21Z

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

3.4.108-rc1 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@intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
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 1c16141..1fea249 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;
}
--
1.9.1