linux-kernel - [PATCH] xen-blkback: prefer xenbus_write() over xenbus

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Date:	Thu, 07 Jul 2016 02:06:12 -0600
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"Roger Pau Monne" <roger.pau@...rix.com>,
	"Konrad Rzeszutek Wilk" <konrad.wilk@...cle.com>
Cc:	<xen-devel@...ts.xenproject.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] xen-blkback: prefer xenbus_write() over
 xenbus_printf() where possible

... as being the simpler variant.

Signed-off-by: Jan Beulich <jbeulich@...e.com>
---
 drivers/block/xen-blkback/xenbus.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- 4.7-rc6-prefer-xenbus_write.orig/drivers/block/xen-blkback/xenbus.c
+++ 4.7-rc6-prefer-xenbus_write/drivers/block/xen-blkback/xenbus.c
@@ -617,9 +617,9 @@ static int xen_blkbk_probe(struct xenbus
 		goto fail;
 	}
 
-	err = xenbus_printf(XBT_NIL, dev->nodename,
-			    "feature-max-indirect-segments", "%u",
-			    MAX_INDIRECT_SEGMENTS);
+	err = xenbus_write(XBT_NIL, dev->nodename,
+			   "feature-max-indirect-segments",
+			   __stringify(MAX_INDIRECT_SEGMENTS));
 	if (err)
 		dev_warn(&dev->dev,
 			 "writing %s/feature-max-indirect-segments (%d)",
@@ -850,7 +850,7 @@ again:
 
 	xen_blkbk_barrier(xbt, be, be->blkif->vbd.flush_support);
 
-	err = xenbus_printf(xbt, dev->nodename, "feature-persistent", "%u", 1);
+	err = xenbus_write(xbt, dev->nodename, "feature-persistent", "1");
 	if (err) {
 		xenbus_dev_fatal(dev, err, "writing %s/feature-persistent",
 				 dev->nodename);