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Fri, 14 Jul 2023 07:10:18 +0000 Received: from SG2PR06MB5288.apcprd06.prod.outlook.com ([fe80::f9b8:80b5:844e:f49a]) by SG2PR06MB5288.apcprd06.prod.outlook.com ([fe80::f9b8:80b5:844e:f49a%6]) with mapi id 15.20.6565.037; Fri, 14 Jul 2023 07:10:18 +0000 From: Minjie Du To: Jiri Slaby , Nick Kossifidis , Luis Chamberlain , Kalle Valo , linux-wireless@vger.kernel.org (open list:ATHEROS ATH5K WIRELESS DRIVER), linux-kernel@vger.kernel.org (open list) Cc: opensource.kernel@vivo.com, Minjie Du Subject: [PATCH v5] wifi: ath5k: remove phydir check from ath5k_debug_init_device() Date: Fri, 14 Jul 2023 15:10:02 +0800 Message-Id: <20230714071002.1264-1-duminjie@vivo.com> X-Mailer: git-send-email 2.39.0 X-ClientProxiedBy: TY2PR01CA0019.jpnprd01.prod.outlook.com (2603:1096:404:a::31) To SG2PR06MB5288.apcprd06.prod.outlook.com (2603:1096:4:1dc::9) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SG2PR06MB5288:EE_|TY0PR06MB5282:EE_ X-MS-Office365-Filtering-Correlation-Id: 40a572ca-c6f6-464a-6446-08db84396143 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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As the debugfs API returns an error pointer, the returned value can never be NULL. Therefore, as the documentation suggests that the check is unnecessary and other debugfs calls have no operation in error cases, it is advisable to completely eliminate the check. Signed-off-by: Minjie Du Reviewed-by: Jiri Slaby --- V4 -> V5: fix expression about patch. V3 -> V4: fix the patch format. V2 -> V3: remove the error check. V1 -> V2: use IS_ERR_OR_NULL() replace IS_ERR() to error check. V1: use IS_ERR() to error check. --- drivers/net/wireless/ath/ath5k/debug.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c index 4b41160e5..ec130510a 100644 --- a/drivers/net/wireless/ath/ath5k/debug.c +++ b/drivers/net/wireless/ath/ath5k/debug.c @@ -982,8 +982,6 @@ ath5k_debug_init_device(struct ath5k_hw *ah) ah->debug.level = ath5k_debug; phydir = debugfs_create_dir("ath5k", ah->hw->wiphy->debugfsdir); - if (!phydir) - return; debugfs_create_file("debug", 0600, phydir, ah, &fops_debug); debugfs_create_file("registers", 0400, phydir, ah, ®isters_fops);