parisc: use non-racy method for /proc/pcxl_dma 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, 3 insertions, 4 deletions

diff --git a/arch/parisc/kernel/pci-dma.c b/arch/parisc/kernel/pci-dma.c
index 9448d4e91142..ccd61b9567a6 100644
--- a/arch/parisc/kernel/pci-dma.c
+++ b/arch/parisc/kernel/pci-dma.c
@@ -397,10 +397,9 @@ pcxl_dma_init(void)
                         "pcxl_dma_init: Unable to create gsc /proc dir entry\n");
         else {
                 struct proc_dir_entry* ent;
-                ent = create_proc_entry("pcxl_dma", 0, proc_gsc_root);
-                if (ent)
-                        ent->proc_fops = &proc_pcxl_dma_ops;
-                else
+                ent = proc_create("pcxl_dma", 0, proc_gsc_root,
+                                  &proc_pcxl_dma_ops);
+                if (!ent)
                         printk(KERN_WARNING
                                 "pci-dma.c: Unable to create pcxl_dma /proc entry.\n");
         }