[Intel-wired-lan] [PATCH] e1000e: i219 execute unit hang fix on every reset or power state transition

[Brown, Aaron F]

> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at lists.osuosl.org] On
> Behalf Of Yanir Lubetkin
> Sent: Tuesday, April 21, 2015 6:15 PM
> To: intel-wired-lan at lists.osuosl.org
> Subject: [Intel-wired-lan] [PATCH] e1000e: i219 execute unit hang fix on
> every reset or power state transition
> 
> after testing various cases, the conclusion is that the fix MUST be
> executed BEFORE
> any event that the HW is reset or transition to D3. to fix that I moved
> the execution
> to the relevant places but per Alexander Duyck's review, ensure now that
> the DMA is
> valid and was not freed before manipulating the ring.
> 
> Signed-off-by: Yanir Lubetkin <yanirx.lubetkin at intel.com>
> ---
>  drivers/net/ethernet/intel/e1000e/netdev.c | 16 ++++++++++------
>  1 file changed, 10 insertions(+), 6 deletions(-)

Tested-by: Aaron Brown <aaron.f.brown at intel.com>