From: Neel Patel neel.patel@amd.com
[ Upstream commit e8797a058466b60fc5a3291b92430c93ba90eaff ]
Clear the interrupt credits before enabling the queue rather than after to be sure that the enabled queue starts at 0 and that we don't wipe away possible credits after enabling the queue.
Fixes: 0f3154e6bcb3 ("ionic: Add Tx and Rx handling") Signed-off-by: Neel Patel neel.patel@amd.com Signed-off-by: Shannon Nelson shannon.nelson@amd.com Reviewed-by: Leon Romanovsky leonro@nvidia.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/pensando/ionic/ionic_lif.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c index 886c997a3ad14..6fbd2a51d66ce 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c @@ -268,6 +268,7 @@ static int ionic_qcq_enable(struct ionic_qcq *qcq) .oper = IONIC_Q_ENABLE, }, }; + int ret;
idev = &lif->ionic->idev; dev = lif->ionic->dev; @@ -275,16 +276,24 @@ static int ionic_qcq_enable(struct ionic_qcq *qcq) dev_dbg(dev, "q_enable.index %d q_enable.qtype %d\n", ctx.cmd.q_control.index, ctx.cmd.q_control.type);
+ if (qcq->flags & IONIC_QCQ_F_INTR) + ionic_intr_clean(idev->intr_ctrl, qcq->intr.index); + + ret = ionic_adminq_post_wait(lif, &ctx); + if (ret) + return ret; + + if (qcq->napi.poll) + napi_enable(&qcq->napi); + if (qcq->flags & IONIC_QCQ_F_INTR) { irq_set_affinity_hint(qcq->intr.vector, &qcq->intr.affinity_mask); - napi_enable(&qcq->napi); - ionic_intr_clean(idev->intr_ctrl, qcq->intr.index); ionic_intr_mask(idev->intr_ctrl, qcq->intr.index, IONIC_INTR_MASK_CLEAR); }
- return ionic_adminq_post_wait(lif, &ctx); + return 0; }
static int ionic_qcq_disable(struct ionic_qcq *qcq, bool send_to_hw)