linux-kernel - [PATCH 3/6] powerpc: mm: book3s64: hash_utils: no need to check return value of debugfs

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Date:   Sun,  9 Feb 2020 11:58:58 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
        Christophe Leroy <christophe.leroy@....fr>,
        Nicholas Piggin <npiggin@...il.com>
Subject: [PATCH 3/6] powerpc: mm: book3s64: hash_utils: 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: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@....fr>
Cc: Nicholas Piggin <npiggin@...il.com>
Cc: linuxppc-dev@...ts.ozlabs.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/powerpc/mm/book3s64/hash_utils.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c
index 523d4d39d11e..7e5714a69a58 100644
--- a/arch/powerpc/mm/book3s64/hash_utils.c
+++ b/arch/powerpc/mm/book3s64/hash_utils.c
@@ -2018,11 +2018,8 @@ DEFINE_DEBUGFS_ATTRIBUTE(fops_hpt_order, hpt_order_get, hpt_order_set, "%llu\n")
 
 static int __init hash64_debugfs(void)
 {
-	if (!debugfs_create_file_unsafe("hpt_order", 0600, powerpc_debugfs_root,
-					NULL, &fops_hpt_order)) {
-		pr_err("lpar: unable to create hpt_order debugsfs file\n");
-	}
-
+	debugfs_create_file("hpt_order", 0600, powerpc_debugfs_root, NULL,
+			    &fops_hpt_order);
 	return 0;
 }
 machine_device_initcall(pseries, hash64_debugfs);
-- 
2.25.0