diff options
Diffstat (limited to 'drivers/crypto/cavium/nitrox/nitrox_main.c')
| -rw-r--r-- | drivers/crypto/cavium/nitrox/nitrox_main.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/crypto/cavium/nitrox/nitrox_main.c b/drivers/crypto/cavium/nitrox/nitrox_main.c index 9b07003e39f7..eee6fb501580 100644 --- a/drivers/crypto/cavium/nitrox/nitrox_main.c +++ b/drivers/crypto/cavium/nitrox/nitrox_main.c @@ -180,6 +180,35 @@ static void nitrox_remove_from_devlist(struct nitrox_device *ndev) mutex_unlock(&devlist_lock); } +struct nitrox_device *nitrox_get_first_device(void) +{ + struct nitrox_device *ndev = NULL; + + mutex_lock(&devlist_lock); + list_for_each_entry(ndev, &ndevlist, list) { + if (nitrox_ready(ndev)) + break; + } + mutex_unlock(&devlist_lock); + if (!ndev) + return NULL; + + refcount_inc(&ndev->refcnt); + /* barrier to sync with other cpus */ + smp_mb__after_atomic(); + return ndev; +} + +void nitrox_put_device(struct nitrox_device *ndev) +{ + if (!ndev) + return; + + refcount_dec(&ndev->refcnt); + /* barrier to sync with other cpus */ + smp_mb__after_atomic(); +} + static int nitrox_reset_device(struct pci_dev *pdev) { int pos = 0; @@ -526,8 +555,18 @@ static int nitrox_probe(struct pci_dev *pdev, set_bit(NITROX_READY, &ndev->status); /* barrier to sync with other cpus */ smp_mb__after_atomic(); + + err = nitrox_crypto_register(); + if (err) + goto crypto_fail; + return 0; +crypto_fail: + nitrox_debugfs_exit(ndev); + clear_bit(NITROX_READY, &ndev->status); + /* barrier to sync with other cpus */ + smp_mb__after_atomic(); pf_hw_fail: nitrox_pf_sw_cleanup(ndev); ioremap_err: @@ -565,6 +604,7 @@ static void nitrox_remove(struct pci_dev *pdev) smp_mb__after_atomic(); nitrox_remove_from_devlist(ndev); + nitrox_crypto_unregister(); nitrox_debugfs_exit(ndev); nitrox_pf_sw_cleanup(ndev); |