linux-kernel - Re: [PATCH v7 03/22] axonram: Fix bug in direct

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Date:	Sat, 29 Mar 2014 17:22:16 +0100
From:	Jan Kara <jack@...e.cz>
To:	Matthew Wilcox <matthew.r.wilcox@...el.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, willy@...ux.intel.com
Subject: Re: [PATCH v7 03/22] axonram: Fix bug in direct_access

On Sun 23-03-14 15:08:29, Matthew Wilcox wrote:
> The 'pfn' returned by axonram was completely bogus, and has been since
> 2008.
  Maybe time to drop the driver instead? When noone noticed for 6 years, it
seems pretty much dead... Or is there some possibility the driver can get
reused for new HW?

  Anyway the patch looks correct so feel free to add:
Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> 
> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@...el.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 47b6b9f..830edc8 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;
>  }
> -- 
> 1.9.0
> 
> --
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-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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