linux-kernel - [PATCH 1/3 v2] xen/xenbus: Correct the comments for xenbus_grant

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Date:	Thu, 18 Sep 2014 21:59:18 +0800
From:	Chen Gang <gang.chen.5i5j@...il.com>
To:	David Vrabel <david.vrabel@...rix.com>, konrad.wilk@...cle.com,
	boris.ostrovsky@...cle.com, stefano.stabellini@...citrix.com,
	mukesh.rathor@...cle.com
CC:	xen-devel@...ts.xenproject.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/3 v2] xen/xenbus: Correct the comments for xenbus_grant_ring()

A grant reference (which is a positive number) can indicate success, so
the original comments need be improved.

Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com>
---
 drivers/xen/xenbus/xenbus_client.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/xen/xenbus/xenbus_client.c b/drivers/xen/xenbus/xenbus_client.c
index 439c9dc..aa9b2fc 100644
--- a/drivers/xen/xenbus/xenbus_client.c
+++ b/drivers/xen/xenbus/xenbus_client.c
@@ -361,8 +361,8 @@ static void xenbus_switch_fatal(struct xenbus_device *dev, int depth, int err,
  * @ring_mfn: mfn of ring to grant
 
  * Grant access to the given @ring_mfn to the peer of the given device.  Return
- * 0 on success, or -errno on error.  On error, the device will switch to
- * XenbusStateClosing, and the error will be saved in the store.
+ * a grant reference on success, or -errno on error. On error, the device will
+ * switch to XenbusStateClosing, and the error will be saved in the store.
  */
 int xenbus_grant_ring(struct xenbus_device *dev, unsigned long ring_mfn)
 {
-- 
1.9.3
--
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