X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Ftty%2Fhvc%2Fhvc_opal.c;fp=drivers%2Ftty%2Fhvc%2Fhvc_opal.c;h=47b54c6aefd2688bfee7c48a506f01f9a5546ec1;hb=2def86a7200ca3a9828926eef927a89adb82ce32;hp=543b234e70fc33bf728f6b30b66e0ef3048e4e1d;hpb=dce143c3381c355ef73be3dd97cf3ca1b15359b8;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c
index 543b234e70fc..47b54c6aefd2 100644
--- a/drivers/tty/hvc/hvc_opal.c
+++ b/drivers/tty/hvc/hvc_opal.c
@@ -29,6 +29,7 @@
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/export.h>
+#include <linux/interrupt.h>
 
 #include <asm/hvconsole.h>
 #include <asm/prom.h>
@@ -61,7 +62,6 @@ static struct hvc_opal_priv *hvc_opal_privs[MAX_NR_HVC_CONSOLES];
 /* For early boot console */
 static struct hvc_opal_priv hvc_opal_boot_priv;
 static u32 hvc_opal_boot_termno;
-static bool hvc_opal_event_registered;
 
 static const struct hv_ops hvc_opal_raw_ops = {
 	.get_chars = opal_get_chars,
@@ -162,28 +162,15 @@ static const struct hv_ops hvc_opal_hvsi_ops = {
 	.tiocmset = hvc_opal_hvsi_tiocmset,
 };
 
-static int hvc_opal_console_event(struct notifier_block *nb,
-				  unsigned long events, void *change)
-{
-	if (events & OPAL_EVENT_CONSOLE_INPUT)
-		hvc_kick();
-	return 0;
-}
-
-static struct notifier_block hvc_opal_console_nb = {
-	.notifier_call	= hvc_opal_console_event,
-};
-
 static int hvc_opal_probe(struct platform_device *dev)
 {
 	const struct hv_ops *ops;
 	struct hvc_struct *hp;
 	struct hvc_opal_priv *pv;
 	hv_protocol_t proto;
-	unsigned int termno, boot = 0;
+	unsigned int termno, irq, boot = 0;
 	const __be32 *reg;
 
-
 	if (of_device_is_compatible(dev->dev.of_node, "ibm,opal-console-raw")) {
 		proto = HV_PROTOCOL_RAW;
 		ops = &hvc_opal_raw_ops;
@@ -227,18 +214,18 @@ static int hvc_opal_probe(struct platform_device *dev)
 		dev->dev.of_node->full_name,
 		boot ? " (boot console)" : "");
 
-	/* We don't do IRQ ... */
-	hp = hvc_alloc(termno, 0, ops, MAX_VIO_PUT_CHARS);
+	irq = opal_event_request(ilog2(OPAL_EVENT_CONSOLE_INPUT));
+	if (!irq) {
+		pr_err("hvc_opal: Unable to map interrupt for device %s\n",
+			dev->dev.of_node->full_name);
+		return irq;
+	}
+
+	hp = hvc_alloc(termno, irq, ops, MAX_VIO_PUT_CHARS);
 	if (IS_ERR(hp))
 		return PTR_ERR(hp);
 	dev_set_drvdata(&dev->dev, hp);
 
-	/* ...  but we use OPAL event to kick the console */
-	if (!hvc_opal_event_registered) {
-		opal_notifier_register(&hvc_opal_console_nb);
-		hvc_opal_event_registered = true;
-	}
-
 	return 0;
 }