Use WARN() in lib/

[linux-2.6-omap-h63xx.git] / block / genhd.c

diff --git a/block/genhd.c b/block/genhd.c
index f03bdadc52ac0488ea227db1eb4651ca94de2e58..c13cc77291af7d1c26378051f7fa1b9770d0f81d 100644 (file)
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -305,6 +305,10 @@ static int find_start(struct device *dev, void *data)
 static void *part_start(struct seq_file *part, loff_t *pos)
 {
        struct device *dev;
+       loff_t n = *pos;
+
+       if (!n)
+               seq_puts(part, "major minor  #blocks  name\n\n");
 
        mutex_lock(&block_class_lock);
        dev = class_find_device(&block_class, NULL, (void *)pos, find_start);
@@ -313,17 +317,21 @@ static void *part_start(struct seq_file *part, loff_t *pos)
        return NULL;
 }
 
+static int find_next(struct device *dev, void *data)
+{
+       if (dev->type == &disk_type)
+               return 1;
+       return 0;
+}
+
 static void *part_next(struct seq_file *part, void *v, loff_t *pos)
 {
        struct gendisk *gp = v;
        struct device *dev;
        ++*pos;
-       list_for_each_entry(dev, &gp->dev.node, node) {
-               if (&dev->node == &block_class.devices)
-                       return NULL;
-               if (dev->type == &disk_type)
-                       return dev_to_disk(dev);
-       }
+       dev = class_find_device(&block_class, &gp->dev, NULL, find_next);
+       if (dev)
+               return dev_to_disk(dev);
        return NULL;
 }
 
@@ -338,9 +346,6 @@ static int show_partition(struct seq_file *part, void *v)
        int n;
        char buf[BDEVNAME_SIZE];
 
-       if (&sgp->dev.node == block_class.devices.next)
-               seq_puts(part, "major minor  #blocks  name\n\n");
-
        /* Don't show non-partitionable removeable devices or empty devices */
        if (!get_capacity(sgp) ||
                        (sgp->minors == 1 && (sgp->flags & GENHD_FL_REMOVABLE)))
@@ -577,12 +582,9 @@ static void *diskstats_next(struct seq_file *part, void *v, loff_t *pos)
        struct device *dev;
 
        ++*pos;
-       list_for_each_entry(dev, &gp->dev.node, node) {
-               if (&dev->node == &block_class.devices)
-                       return NULL;
-               if (dev->type == &disk_type)
-                       return dev_to_disk(dev);
-       }
+       dev = class_find_device(&block_class, &gp->dev, NULL, find_next);
+       if (dev)
+               return dev_to_disk(dev);
        return NULL;
 }