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ionic: move lif mutex setup and delete

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Move creation and deletion of lif mutex a level out to
lif creation and delete, rather than in init and deinit.
This assures that nothing will get hung if anything is waiting
on the mutex while the driver is clearing the lif while handling
the fw_down/fw_up cycle.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shannon Nelson 2021-10-01 11:05:53 -07:00 committed by David S. Miller
parent 36b20b7fb1
commit 26671ff92c
1 changed files with 10 additions and 5 deletions
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15
drivers/net/ethernet/pensando/ionic/ionic_lif.c
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@ -2890,6 +2890,9 @@ int ionic_lif_alloc(struct ionic *ionic)
snprintf(lif->name, sizeof(lif->name), "lif%u", lif->index);
mutex_init(&lif->queue_lock);
mutex_init(&lif->config_lock);
spin_lock_init(&lif->adminq_lock);
spin_lock_init(&lif->deferred.lock);
@ -2903,7 +2906,7 @@ int ionic_lif_alloc(struct ionic *ionic)
if (!lif->info) {
dev_err(dev, "Failed to allocate lif info, aborting\n");
err = -ENOMEM;
goto err_out_free_netdev;
goto err_out_free_mutex;
}
ionic_debugfs_add_lif(lif);
@ -2938,6 +2941,9 @@ err_out_free_lif_info:
dma_free_coherent(dev, lif->info_sz, lif->info, lif->info_pa);
lif->info = NULL;
lif->info_pa = 0;
err_out_free_mutex:
mutex_destroy(&lif->config_lock);
mutex_destroy(&lif->queue_lock);
err_out_free_netdev:
free_netdev(lif->netdev);
lif = NULL;
@ -3078,6 +3084,9 @@ void ionic_lif_free(struct ionic_lif *lif)
kfree(lif->dbid_inuse);
lif->dbid_inuse = NULL;
mutex_destroy(&lif->config_lock);
mutex_destroy(&lif->queue_lock);
/* free netdev & lif */
ionic_debugfs_del_lif(lif);
free_netdev(lif->netdev);
@ -3100,8 +3109,6 @@ void ionic_lif_deinit(struct ionic_lif *lif)
ionic_lif_qcq_deinit(lif, lif->notifyqcq);
ionic_lif_qcq_deinit(lif, lif->adminqcq);
mutex_destroy(&lif->config_lock);
mutex_destroy(&lif->queue_lock);
ionic_lif_reset(lif);
}
@ -3267,8 +3274,6 @@ int ionic_lif_init(struct ionic_lif *lif)
return err;
lif->hw_index = le16_to_cpu(comp.hw_index);
mutex_init(&lif->queue_lock);
mutex_init(&lif->config_lock);
/* now that we have the hw_index we can figure out our doorbell page */
lif->dbid_count = le32_to_cpu(lif->ionic->ident.dev.ndbpgs_per_lif);