x86: xen: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <x86@kernel.org>
Cc: <xen-devel@lists.xenproject.org>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/x86/xen/debugfs.c b/arch/x86/xen/debugfs.c
index 13da87918b4f3288d1e437fa0c97390ec6a6810c..532410998684d94c59943c065c315b930b48ae0b 100644 (file)
--- a/arch/x86/xen/debugfs.c
+++ b/arch/x86/xen/debugfs.c
@@ -9,13 +9,8 @@ static struct dentry *d_xen_debug;
 
 struct dentry * __init xen_init_debugfs(void)
 {
-       if (!d_xen_debug) {
+       if (!d_xen_debug)
                d_xen_debug = debugfs_create_dir("xen", NULL);
-
-               if (!d_xen_debug)
-                       pr_warning("Could not create 'xen' debugfs directory\n");
-       }
-
        return d_xen_debug;
 }
 

diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 95ce9b5be41124cb6f48db15d433a069fc76f69d..0acba2c712ab842b98e7b1f005e89f0e206555b3 100644 (file)
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -817,9 +817,6 @@ static int __init xen_p2m_debugfs(void)
 {
        struct dentry *d_xen = xen_init_debugfs();
 
-       if (d_xen == NULL)
-               return -ENOMEM;
-
        d_mmu_debug = debugfs_create_dir("mmu", d_xen);
 
        debugfs_create_file("p2m", 0600, d_mmu_debug, NULL, &p2m_dump_fops);