diff options
| author | Yangbo Lu <yangbo.lu@nxp.com> | 2021-06-30 11:11:54 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-07-01 23:08:18 +0300 |
| commit | 44c494c8e30e35713c7d11ca3c5ab332cbfabacf (patch) | |
| tree | 493c2951ee203f92d80b568cccc28da4e24635bd /drivers/ptp/ptp_clock.c | |
| parent | 73f37068d540eba5f93ba3a0019bf479d35ebd76 (diff) | |
| download | linux-44c494c8e30e35713c7d11ca3c5ab332cbfabacf.tar.xz | |
ptp: track available ptp vclocks information
Track available ptp vclocks information. Record index values
of available ptp vclocks during registering and unregistering.
This is preparation for supporting ptp vclocks info query
through ethtool.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/ptp/ptp_clock.c')
| -rw-r--r-- | drivers/ptp/ptp_clock.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c index 7334f478dde7..9205a9362a9d 100644 --- a/drivers/ptp/ptp_clock.c +++ b/drivers/ptp/ptp_clock.c @@ -196,6 +196,7 @@ struct ptp_clock *ptp_clock_register(struct ptp_clock_info *info, { struct ptp_clock *ptp; int err = 0, index, major = MAJOR(ptp_devt); + size_t size; if (info->n_alarm > PTP_MAX_ALARMS) return ERR_PTR(-EINVAL); @@ -238,9 +239,17 @@ struct ptp_clock *ptp_clock_register(struct ptp_clock_info *info, strcmp(parent->class->name, "ptp") == 0) ptp->is_virtual_clock = true; - if (!ptp->is_virtual_clock) + if (!ptp->is_virtual_clock) { ptp->max_vclocks = PTP_DEFAULT_MAX_VCLOCKS; + size = sizeof(int) * ptp->max_vclocks; + ptp->vclock_index = kzalloc(size, GFP_KERNEL); + if (!ptp->vclock_index) { + err = -ENOMEM; + goto no_mem_for_vclocks; + } + } + err = ptp_populate_pin_groups(ptp); if (err) goto no_pin_groups; @@ -285,6 +294,8 @@ no_clock: no_pps: ptp_cleanup_pin_groups(ptp); no_pin_groups: + kfree(ptp->vclock_index); +no_mem_for_vclocks: if (ptp->kworker) kthread_destroy_worker(ptp->kworker); kworker_err: @@ -309,6 +320,8 @@ int ptp_clock_unregister(struct ptp_clock *ptp) ptp->defunct = 1; wake_up_interruptible(&ptp->tsev_wq); + kfree(ptp->vclock_index); + if (ptp->kworker) { kthread_cancel_delayed_work_sync(&ptp->aux_work); kthread_destroy_worker(ptp->kworker); |