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authorJag Raman <jag.raman@oracle.com>2017-08-15 17:03:03 -0400
committerDavid S. Miller <davem@davemloft.net>2017-08-15 21:33:52 -0700
commit103b9b0bc9e068d5e9432ee1da526d8feabc0216 (patch)
tree7b6689612db05b3896df766d5a048fcd0a75dcad /drivers/tty/vcc.c
parentf8c553354e71fbb982ff63f2f574c1658aea50a9 (diff)
sparc64: vcc: Enable LDC event processing engine
Enable event processing engine to handle LDC events Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/tty/vcc.c')
-rw-r--r--drivers/tty/vcc.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/tty/vcc.c b/drivers/tty/vcc.c
index 27566d5f7df0..91f663d207b6 100644
--- a/drivers/tty/vcc.c
+++ b/drivers/tty/vcc.c
@@ -437,8 +437,42 @@ done:
vcc_put(port, false);
}
+/**
+ * vcc_event() - LDC event processing engine
+ * @arg: VCC private data
+ * @event: LDC event
+ *
+ * Handles LDC events for VCC
+ */
static void vcc_event(void *arg, int event)
{
+ struct vio_driver_state *vio;
+ struct vcc_port *port;
+ unsigned long flags;
+ int rv;
+
+ port = arg;
+ vio = &port->vio;
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ switch (event) {
+ case LDC_EVENT_RESET:
+ case LDC_EVENT_UP:
+ vio_link_state_change(vio, event);
+ break;
+
+ case LDC_EVENT_DATA_READY:
+ rv = vcc_ldc_read(port);
+ if (rv == -ECONNRESET)
+ vio_conn_reset(vio);
+ break;
+
+ default:
+ pr_err("VCC: unexpected LDC event(%d)\n", event);
+ }
+
+ spin_unlock_irqrestore(&port->lock, flags);
}
static struct ldc_channel_config vcc_ldc_cfg = {