i40evf: kick a stalled admin queue

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On some versions of the firmware, the VF admin send queue may become
stalled. In this case, the easiest solution is to just place another
descriptor on the queue; the firmware will then process both requests.

The early init code already accounts for this, but the runtime code does
not. In the watchdog task, check for the stall condition, and if it's
found, send our API version to the PF. When the PF replies, just ignore
the reply.

Change-ID: I380d78185a4f284d649c44d263e648afc9b4d50c
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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Mitch A Williams 2014-12-09 08:53:08 +00:00 • committed by Jeff Kirsher

parent 7235448c9d

commit 0758e7cb5f

2 changed files with 9 additions and 1 deletions

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7

drivers/net/ethernet/intel/i40evf/i40evf_main.c

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3

drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c

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