Re: [PATCH] libata: add missing NULL pointer check to ata_eh_reset()

[Jeff Garzik <jgarzik@pobox.com>]

Bartlomiej Zolnierkiewicz wrote:
> From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> Subject: [PATCH] libata: add missing NULL pointer check to ata_eh_reset()
> 
>>From Dan's list:
> 
> drivers/ata/libata-eh.c +2403 ata_eh_reset(80) warning: variable derefenced before check 'slave'
> 
> Please note that this is _not_ a real bug at the moment since ata_eh_context
> structure is embedded into ata_list structure and the code alwas checks for
> 'slave' before accessing 'sehc'.
> 
> Anyway lets add missing check and always have a valid 'sehc' pointer (which
> makes code easier to understand and prevents introducing some possible bugs
> in the future).
> 
> Reported-by: Dan Carpenter <error27@gmail.com>
> Cc: corbet@lwn.net
> Cc: eteo@redhat.com
> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> ---
>  drivers/ata/libata-eh.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

applied to #upstream-fixes