[Intel-wired-lan] [PATCH] i40evf: Use le32_to_cpu before evaluating HW desc fields.

tndave tushar.n.dave at oracle.com
Mon May 22 20:04:00 UTC 2017



On 05/21/2017 04:08 PM, Alexander Duyck wrote:
> On Fri, May 19, 2017 at 6:12 PM, tndave <tushar.n.dave at oracle.com> wrote:
>>
>>
>> On 05/16/2017 04:07 PM, Jeff Kirsher wrote:
>>>
>>> On Mon, 2017-05-01 at 16:15 -0700, Tushar Dave wrote:
>>>>
>>>> i40e hardware descriptor fields are in little-endian format. Driver
>>>> must use le32_to_cpu while evaluating these fields otherwise on
>>>> big-endian arch we end up evaluating incorrect values, cause errors
>>>> like:
>>>>
>>>> i40evf 0001:04:02.0: Expected response 0 from PF, received 285212672
>>>> i40evf 0001:04:02.1: Expected response 0 from PF, received 285212672
>>>>
>>>> Signed-off-by: Tushar Dave <tushar.n.dave at oracle.com>
>>>> ---
>>>>  drivers/net/ethernet/intel/i40evf/i40evf_main.c | 6 ++++--
>>>>  1 file changed, 4 insertions(+), 2 deletions(-)
>>>
>>>
>>> Due to recent patches already applied to my tree, this patch does not
>>> apply cleanly.  Feel free to send an updated patch, if the change is
>>> still needed.
>>
>> Hi Jeff,
>>
>> I just tried the same patch on Dave's latest linux-net and it applies
>> cleanly. Wondering if I should clone your tree and make sure it applies?
>> If so, I may need to do same for all my future patches as well, thats a
>> extra bit of work!
>>
>> Most of the time, mine are bug fixes and I always use linux-net when
>> upstreaming my patches for Intel Ethernet drivers.
>>
>
> You probably should just be cloning the dev-queue branch of Jeff's
> tree. The issue is I believe he has some virtchnl changes from Jesse
> and they are conflicting with your change.\
Okay.
Thanks.

-Tushar
>
> - Alex
>


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