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-rw-r--r--drivers/ptp/ptp_ocp.c24
1 files changed, 10 insertions, 14 deletions
diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index 95889f85ffb2..28243fb1d78f 100644
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c
@@ -2225,6 +2225,9 @@ ptp_ocp_ts_enable(void *priv, u32 req, bool enable)
static void
ptp_ocp_unregister_ext(struct ptp_ocp_ext_src *ext)
{
+ if (!ext)
+ return;
+
ext->info->enable(ext, ~0, false);
pci_free_irq(ext->bp->pdev, ext->irq_vec, ext);
kfree(ext);
@@ -4558,21 +4561,14 @@ ptp_ocp_detach(struct ptp_ocp *bp)
ptp_ocp_detach_sysfs(bp);
ptp_ocp_attr_group_del(bp);
timer_delete_sync(&bp->watchdog);
- if (bp->ts0)
- ptp_ocp_unregister_ext(bp->ts0);
- if (bp->ts1)
- ptp_ocp_unregister_ext(bp->ts1);
- if (bp->ts2)
- ptp_ocp_unregister_ext(bp->ts2);
- if (bp->ts3)
- ptp_ocp_unregister_ext(bp->ts3);
- if (bp->ts4)
- ptp_ocp_unregister_ext(bp->ts4);
- if (bp->pps)
- ptp_ocp_unregister_ext(bp->pps);
+ ptp_ocp_unregister_ext(bp->ts0);
+ ptp_ocp_unregister_ext(bp->ts1);
+ ptp_ocp_unregister_ext(bp->ts2);
+ ptp_ocp_unregister_ext(bp->ts3);
+ ptp_ocp_unregister_ext(bp->ts4);
+ ptp_ocp_unregister_ext(bp->pps);
for (i = 0; i < 4; i++)
- if (bp->signal_out[i])
- ptp_ocp_unregister_ext(bp->signal_out[i]);
+ ptp_ocp_unregister_ext(bp->signal_out[i]);
for (i = 0; i < __PORT_COUNT; i++)
if (bp->port[i].line != -1)
serial8250_unregister_port(bp->port[i].line);