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From:   YueHaibing <yuehaibing@huawei.com>
To:     Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Mike Rapoport <rppt@linux.vnet.ibm.com>,
        Alastair D'Silva <alastair@d-silva.org>,
        "Frederic Barrat" <fbarrat@linux.vnet.ibm.com>,
        Alexey Kardashevskiy <aik@ozlabs.ru>,
        David Gibson <david@gibson.dropbear.id.au>,
        Andrew Donnellan <andrew.donnellan@au1.ibm.com>,
        Andrew Morton <akpm@linux-foundation.org>
CC:     YueHaibing <yuehaibing@huawei.com>,
        <linuxppc-dev@lists.ozlabs.org>, <linux-kernel@vger.kernel.org>,
        <kernel-janitors@vger.kernel.org>
Subject: [PATCH -next] powerpc/powernv/npu: Fix debugfs_simple_attr.cocci warnings
Date:   Tue, 25 Dec 2018 02:44:36 +0000
Message-ID: <1545705876-63132-1-git-send-email-yuehaibing@huawei.com>
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Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE
for debugfs files.

Semantic patch information:
Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file()
imposes some significant overhead as compared to
DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe().

Generated by: scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
---
 arch/powerpc/platforms/powernv/pci-ioda.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index 1d6406a..c4cf230 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -3147,8 +3147,8 @@ static int pnv_pci_diag_data_set(void *data, u64 val)
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(pnv_pci_diag_data_fops, NULL,
-			pnv_pci_diag_data_set, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(pnv_pci_diag_data_fops, NULL, pnv_pci_diag_data_set,
+			 "%llu\n");
 
 #endif /* CONFIG_DEBUG_FS */
 
@@ -3173,8 +3173,8 @@ static void pnv_pci_ioda_create_dbgfs(void)
 			continue;
 		}
 
-		debugfs_create_file("dump_diag_regs", 0200, phb->dbgfs, hose,
-				    &pnv_pci_diag_data_fops);
+		debugfs_create_file_unsafe("dump_diag_regs", 0200, phb->dbgfs,
+					   hose, &pnv_pci_diag_data_fops);
 	}
 #endif /* CONFIG_DEBUG_FS */
 }