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path: root/drivers/net/xen-netback/xenbus.c
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Diffstat (limited to 'drivers/net/xen-netback/xenbus.c')
-rw-r--r--drivers/net/xen-netback/xenbus.c46
1 files changed, 11 insertions, 35 deletions
diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c
index 41034264bd34..f533b7372d59 100644
--- a/drivers/net/xen-netback/xenbus.c
+++ b/drivers/net/xen-netback/xenbus.c
@@ -170,50 +170,26 @@ DEFINE_SHOW_ATTRIBUTE(xenvif_ctrl);
static void xenvif_debugfs_addif(struct xenvif *vif)
{
- struct dentry *pfile;
int i;
- if (IS_ERR_OR_NULL(xen_netback_dbg_root))
- return;
-
vif->xenvif_dbg_root = debugfs_create_dir(vif->dev->name,
xen_netback_dbg_root);
- if (!IS_ERR_OR_NULL(vif->xenvif_dbg_root)) {
- for (i = 0; i < vif->num_queues; ++i) {
- char filename[sizeof("io_ring_q") + 4];
-
- snprintf(filename, sizeof(filename), "io_ring_q%d", i);
- pfile = debugfs_create_file(filename,
- 0600,
- vif->xenvif_dbg_root,
- &vif->queues[i],
- &xenvif_dbg_io_ring_ops_fops);
- if (IS_ERR_OR_NULL(pfile))
- pr_warn("Creation of io_ring file returned %ld!\n",
- PTR_ERR(pfile));
- }
+ for (i = 0; i < vif->num_queues; ++i) {
+ char filename[sizeof("io_ring_q") + 4];
- if (vif->ctrl_irq) {
- pfile = debugfs_create_file("ctrl",
- 0400,
- vif->xenvif_dbg_root,
- vif,
- &xenvif_ctrl_fops);
- if (IS_ERR_OR_NULL(pfile))
- pr_warn("Creation of ctrl file returned %ld!\n",
- PTR_ERR(pfile));
- }
- } else
- netdev_warn(vif->dev,
- "Creation of vif debugfs dir returned %ld!\n",
- PTR_ERR(vif->xenvif_dbg_root));
+ snprintf(filename, sizeof(filename), "io_ring_q%d", i);
+ debugfs_create_file(filename, 0600, vif->xenvif_dbg_root,
+ &vif->queues[i],
+ &xenvif_dbg_io_ring_ops_fops);
+ }
+
+ if (vif->ctrl_irq)
+ debugfs_create_file("ctrl", 0400, vif->xenvif_dbg_root, vif,
+ &xenvif_ctrl_fops);
}
static void xenvif_debugfs_delif(struct xenvif *vif)
{
- if (IS_ERR_OR_NULL(xen_netback_dbg_root))
- return;
-
debugfs_remove_recursive(vif->xenvif_dbg_root);
vif->xenvif_dbg_root = NULL;
}