From: Shannon Nelson snelson@pensando.io
[ Upstream commit a4674f34711b96b65bdc4d54eca88d2fd123bbc6 ]
Make sure the queue structs exist before trying to tear them down to make for safer error recovery.
Fixes: 0f3154e6bcb3 ("ionic: Add Tx and Rx handling") Signed-off-by: Shannon Nelson snelson@pensando.io Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/ethernet/pensando/ionic/ionic_lif.c | 26 ++++++++++--------- .../net/ethernet/pensando/ionic/ionic_main.c | 7 ++++- 2 files changed, 20 insertions(+), 13 deletions(-)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c index 134640412d7b7..21e126708cc20 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c @@ -303,19 +303,21 @@ static void ionic_qcqs_free(struct ionic_lif *lif) lif->adminqcq = NULL; }
- for (i = 0; i < lif->nxqs; i++) - if (lif->rxqcqs[i].stats) - devm_kfree(dev, lif->rxqcqs[i].stats); - - devm_kfree(dev, lif->rxqcqs); - lif->rxqcqs = NULL; - - for (i = 0; i < lif->nxqs; i++) - if (lif->txqcqs[i].stats) - devm_kfree(dev, lif->txqcqs[i].stats); + if (lif->rxqcqs) { + for (i = 0; i < lif->nxqs; i++) + if (lif->rxqcqs[i].stats) + devm_kfree(dev, lif->rxqcqs[i].stats); + devm_kfree(dev, lif->rxqcqs); + lif->rxqcqs = NULL; + }
- devm_kfree(dev, lif->txqcqs); - lif->txqcqs = NULL; + if (lif->txqcqs) { + for (i = 0; i < lif->nxqs; i++) + if (lif->txqcqs[i].stats) + devm_kfree(dev, lif->txqcqs[i].stats); + devm_kfree(dev, lif->txqcqs); + lif->txqcqs = NULL; + } }
static void ionic_link_qcq_interrupts(struct ionic_qcq *src_qcq, diff --git a/drivers/net/ethernet/pensando/ionic/ionic_main.c b/drivers/net/ethernet/pensando/ionic/ionic_main.c index aab3114134128..20a384964fc52 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_main.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_main.c @@ -236,11 +236,16 @@ static void ionic_adminq_cb(struct ionic_queue *q,
static int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) { - struct ionic_queue *adminq = &lif->adminqcq->q; + struct ionic_queue *adminq; int err = 0;
WARN_ON(in_interrupt());
+ if (!lif->adminqcq) + return -EIO; + + adminq = &lif->adminqcq->q; + spin_lock(&lif->adminq_lock); if (!ionic_q_has_space(adminq, 1)) { err = -ENOSPC;