linux-kernel - [PATCH 4/9] vmbus: remove unnecessary initialization

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Message-Id: <1488677238-5150-4-git-send-email-kys@exchange.microsoft.com>
Date:   Sat,  4 Mar 2017 18:27:13 -0700
From:   kys@...hange.microsoft.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,
        leann.ogasawara@...onical.com, marcelo.cerri@...onical.com
Cc:     Stephen Hemminger <stephen@...workplumber.org>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "K. Y. Srinivasan" <kys@...rosoft.com>
Subject: [PATCH 4/9] vmbus: remove unnecessary initialization

From: Stephen Hemminger <stephen@...workplumber.org>

Don't initialize variables that are then set a few lines later.

Signed-off-by: Stephen Hemminger <sthemmin@...rosoft.com>
Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
---
 drivers/hv/ring_buffer.c |   13 +++++--------
 1 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index d0ff5b4..52d0556 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -265,14 +265,13 @@ void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info)
 int hv_ringbuffer_write(struct vmbus_channel *channel,
 			const struct kvec *kv_list, u32 kv_count)
 {
-	int i = 0;
+	int i;
 	u32 bytes_avail_towrite;
-	u32 totalbytes_towrite = 0;
-
+	u32 totalbytes_towrite = sizeof(u64);
 	u32 next_write_location;
 	u32 old_write;
-	u64 prev_indices = 0;
-	unsigned long flags = 0;
+	u64 prev_indices;
+	unsigned long flags;
 	struct hv_ring_buffer_info *outring_info = &channel->outbound;
 
 	if (channel->rescind)
@@ -281,8 +280,6 @@ int hv_ringbuffer_write(struct vmbus_channel *channel,
 	for (i = 0; i < kv_count; i++)
 		totalbytes_towrite += kv_list[i].iov_len;
 
-	totalbytes_towrite += sizeof(u64);
-
 	spin_lock_irqsave(&outring_info->ring_lock, flags);
 
 	bytes_avail_towrite = hv_get_bytes_to_write(outring_info);
@@ -339,7 +336,7 @@ int hv_ringbuffer_read(struct vmbus_channel *channel,
 		       u64 *requestid, bool raw)
 {
 	u32 bytes_avail_toread;
-	u32 next_read_location = 0;
+	u32 next_read_location;
 	u64 prev_indices = 0;
 	struct vmpacket_descriptor desc;
 	u32 offset;
-- 
1.7.1