xen/blkback: Fix checkpatch warnings of xenbus.c

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/drivers/xen/blkback/xenbus.c b/drivers/xen/blkback/xenbus.c
index 67462c4..b41ed65 100644 (file)
--- a/drivers/xen/blkback/xenbus.c
+++ b/drivers/xen/blkback/xenbus.c
@@ -25,10 +25,9 @@
 #undef DPRINTK
 #define DPRINTK(fmt, args...)                          \
        pr_debug("blkback/xenbus (%s:%d) " fmt ".\n",   \
-                __FUNCTION__, __LINE__, ##args)
+                __func__, __LINE__, ##args)
 
-struct backend_info
-{
+struct backend_info {
        struct xenbus_device *dev;
        struct blkif_st *blkif;
        struct xenbus_watch backend_watch;
@@ -56,7 +55,8 @@ static int blkback_name(struct blkif_st *blkif, char *buf)
        if (IS_ERR(devpath))
                return PTR_ERR(devpath);
 
-       if ((devname = strstr(devpath, "/dev/")) != NULL)
+       devname = strstr(devpath, "/dev/");
+       if (devname != NULL)
                devname += strlen("/dev/");
        else
                devname  = devpath;
@@ -153,7 +153,7 @@ int xenvbd_sysfs_addif(struct xenbus_device *dev)
        int error;
 
        error = device_create_file(&dev->dev, &dev_attr_physical_device);
-       if (error)
+       if (error)
                goto fail1;
 
        error = device_create_file(&dev->dev, &dev_attr_mode);
@@ -327,7 +327,10 @@ static void backend_changed(struct xenbus_watch *watch,
                /* Front end dir is a number, which is used as the handle. */
 
                char *p = strrchr(dev->otherend, '/') + 1;
-               long handle = simple_strtoul(p, NULL, 0);
+               long handle;
+               err = strict_strtoul(p, 0, &handle);
+               if (err)
+                       return;
 
                be->major = major;
                be->minor = minor;
@@ -369,7 +372,7 @@ static void frontend_changed(struct xenbus_device *dev,
        case XenbusStateInitialising:
                if (dev->state == XenbusStateClosed) {
                        printk(KERN_INFO "%s: %s: prepare for reconnect\n",
-                              __FUNCTION__, dev->nodename);
+                              __func__, dev->nodename);
                        xenbus_switch_state(dev, XenbusStateInitWait);
                }
                break;
@@ -494,8 +497,8 @@ static int connect_ring(struct backend_info *be)
 
        DPRINTK("%s", dev->otherend);
 
-       err = xenbus_gather(XBT_NIL, dev->otherend, "ring-ref", "%lu", &ring_ref,
-                           "event-channel", "%u", &evtchn, NULL);
+       err = xenbus_gather(XBT_NIL, dev->otherend, "ring-ref", "%lu",
+                           &ring_ref, "event-channel", "%u", &evtchn, NULL);
        if (err) {
                xenbus_dev_fatal(dev, err,
                                 "reading %s/ring-ref and event-channel",