From: K. Y. Srinivasan <kys@microsoft.com>
Date: Fri, 1 Jul 2016 23:26:36 +0000 (-0700)
Subject: Drivers: hv: vmbus: Reduce the delay between retries in vmbus_post_msg()
X-Git-Tag: v4.4.64~17
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f803416632b5c31e647cf18861e4c379173a02e2;p=thirdparty%2Fkernel%2Fstable.git

Drivers: hv: vmbus: Reduce the delay between retries in vmbus_post_msg()

commit 8de0d7e951826d7592e0ba1da655b175c4aa0923 upstream.

The current delay between retries is unnecessarily high and is negatively
affecting the time it takes to boot the system.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c
index 4fc2e8836e60d..2bbc530255496 100644
--- a/drivers/hv/connection.c
+++ b/drivers/hv/connection.c
@@ -429,7 +429,7 @@ int vmbus_post_msg(void *buffer, size_t buflen)
 	union hv_connection_id conn_id;
 	int ret = 0;
 	int retries = 0;
-	u32 msec = 1;
+	u32 usec = 1;
 
 	conn_id.asu32 = 0;
 	conn_id.u.id = VMBUS_MESSAGE_CONNECTION_ID;
@@ -462,9 +462,9 @@ int vmbus_post_msg(void *buffer, size_t buflen)
 		}
 
 		retries++;
-		msleep(msec);
-		if (msec < 2048)
-			msec *= 2;
+		udelay(usec);
+		if (usec < 2048)
+			usec *= 2;
 	}
 	return ret;
 }