linux-kernel - [PATCH 1/1] Drivers: hv: vmbus: Cleanup vmbus_set

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Message-Id: <1450739540-28507-1-git-send-email-kys@microsoft.com>
Date:	Mon, 21 Dec 2015 15:12:20 -0800
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, olaf@...fle.de, apw@...onical.com,
	vkuznets@...hat.com, jasowang@...hat.com
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>
Subject: [PATCH 1/1] Drivers: hv: vmbus: Cleanup vmbus_set_event()

Cleanup vmbus_set_event() by inlining the hypercall to post
the event and since the return value of vmbus_set_event() is not checked,
make it void. As part of this cleanup, get rid of the function
hv_signal_event() as it is only callled from vmbus_set_event().

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
---
 drivers/hv/connection.c   |    4 ++--
 drivers/hv/hv.c           |   16 ----------------
 drivers/hv/hyperv_vmbus.h |    4 +---
 3 files changed, 3 insertions(+), 21 deletions(-)

diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c
index 3dc5a9c..4a320e6 100644
--- a/drivers/hv/connection.c
+++ b/drivers/hv/connection.c
@@ -474,7 +474,7 @@ int vmbus_post_msg(void *buffer, size_t buflen)
 /*
  * vmbus_set_event - Send an event notification to the parent
  */
-int vmbus_set_event(struct vmbus_channel *channel)
+void vmbus_set_event(struct vmbus_channel *channel)
 {
 	u32 child_relid = channel->offermsg.child_relid;
 
@@ -485,5 +485,5 @@ int vmbus_set_event(struct vmbus_channel *channel)
 			(child_relid >> 5));
 	}
 
-	return hv_signal_event(channel->sig_event);
+	hv_do_hypercall(HVCALL_SIGNAL_EVENT, channel->sig_event, NULL);
 }
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index 1db9556..2ed8e16 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -336,22 +336,6 @@ int hv_post_message(union hv_connection_id connection_id,
 	return status & 0xFFFF;
 }
 
-
-/*
- * hv_signal_event -
- * Signal an event on the specified connection using the hypervisor event IPC.
- *
- * This involves a hypercall.
- */
-int hv_signal_event(void *con_id)
-{
-	u64 status;
-
-	status = hv_do_hypercall(HVCALL_SIGNAL_EVENT, con_id, NULL);
-
-	return status & 0xFFFF;
-}
-
 static int hv_ce_set_next_event(unsigned long delta,
 				struct clock_event_device *evt)
 {
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index 0411b7b..70540d5 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -587,8 +587,6 @@ extern int hv_post_message(union hv_connection_id connection_id,
 			 enum hv_message_type message_type,
 			 void *payload, size_t payload_size);
 
-extern int hv_signal_event(void *con_id);
-
 extern int hv_synic_alloc(void);
 
 extern void hv_synic_free(void);
@@ -736,7 +734,7 @@ void vmbus_disconnect(void);
 
 int vmbus_post_msg(void *buffer, size_t buflen);
 
-int vmbus_set_event(struct vmbus_channel *channel);
+void vmbus_set_event(struct vmbus_channel *channel);
 
 void vmbus_on_event(unsigned long data);
 
-- 
1.7.4.1

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