parisc: use non-racy method for proc entries creation

Use proc_create() to make sure that ->proc_fops be setup before gluing PDE to
main tree.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Cc: Kyle McMartin <kyle@parisc-linux.org>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Grant Grundler <grundler@parisc-linux.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 9 deletions

diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
index 8c4d2c13d5f2..afc849bd3f58 100644
--- a/drivers/parisc/sba_iommu.c
+++ b/drivers/parisc/sba_iommu.c
@@ -1895,7 +1895,9 @@ sba_driver_callback(struct parisc_device *dev)
         int i;
         char *version;
         void __iomem *sba_addr = ioremap_nocache(dev->hpa.start, SBA_FUNC_SIZE);
-        struct proc_dir_entry *info_entry, *bitmap_entry, *root;
+#ifdef CONFIG_PROC_FS
+        struct proc_dir_entry *root;
+#endif
 
         sba_dump_ranges(sba_addr);
 
@@ -1973,14 +1975,8 @@ sba_driver_callback(struct parisc_device *dev)
                 break;
         }
 
-        info_entry = create_proc_entry("sba_iommu", 0, root);
-        bitmap_entry = create_proc_entry("sba_iommu-bitmap", 0, root);
-
-        if (info_entry)
-                info_entry->proc_fops = &sba_proc_fops;
-
-        if (bitmap_entry)
-                bitmap_entry->proc_fops = &sba_proc_bitmap_fops;
+        proc_create("sba_iommu", 0, root, &sba_proc_fops);
+        proc_create("sba_iommu-bitmap", 0, root, &sba_proc_bitmap_fops);
 #endif
 
         parisc_vmerge_boundary = IOVP_SIZE;