[PATCH][v3] driver/FSL SATA:Fix wrong Device Error Register usage

[Jeff Garzik]

On 03/09/2011 02:17 AM, Prabhakar Kushwaha wrote:
> When a single device error is detected, the device under the error is indicated
> by the error bit set in the DER. There is a one to one mapping between register
> bit and devices on Port multiplier(PMP) i.e. bit 0 represents PMP device 0 and
> bit 1 represents PMP device 1 etc.
>
> Current implementation treats Device error register value as device number not
> set of bits representing multiple device on PMP. It is changed to consider bit
> level.
> No need to check for each set bit as all command is going to be aborted.
>
> Signed-off-by: Ashish Kalra<B00888 at freescale.com>
> Signed-off-by: Prabhakar Kushwaha<prabhakar at freescale.com>
> ---
>
>   git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git (branch master)
>
>   This patch is already gone through review of linuxppc-dev mail list.
>   Making CC linuxppc-dev at lists.ozlabs.org
>
>   Changes for v2: Incorporated Sergei Shtylyov's comment
> 	- Put space after -
> 	- added a line
>   Changes for v3: Incorporated David Laight's comment
>   	- Condition check for dereg 0 for hardware error
>
>   drivers/ata/sata_fsl.c |    7 +++++--
>   1 files changed, 5 insertions(+), 2 deletions(-)

applied