[SRU][P][PATCH 0/1] gve: unlink old napi only if page pool exists

[Tim Whisonant]

BugLink: https://bugs.launchpad.net/bugs/2106281

SRU Justification:

[Impact]

gve: unlink old napi only if page pool exists

Commit de70981f295e ("gve: unlink old napi when stopping a queue using
queue API") unlinks the old napi when stopping a queue. But this breaks
QPL mode of the driver which does not use page pool. Fix this by checking
that there's a page pool associated with the ring.

[Fix]

Plucky:   clean cherry pick from upstream
Oracular: not affected
Noble:    not affected
Jammy:    not affected
Focal:    not affected
Bionic:   not affected
Xenial:   not affected
Trusty:   not affected

[Test Plan]

Compile and boot tested.

[Where problems could occur]

The change occurs in the gVNIC ethernet driver. Problems would affect
the ring buffer processing logic for these devices.

Harshitha Ramamurthy (1):
  gve: unlink old napi only if page pool exists

 drivers/net/ethernet/google/gve/gve_rx_dqo.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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2.43.0