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From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: [PATCH] memory: tegra: fix debugfs_simple_attr.cocci warnings
Date: Thu, 17 Jun 2021 19:18:13 +0800	[thread overview]
Message-ID: <20210617111813.GA122591@19095dffe3c1> (raw)
In-Reply-To: <202106171914.tLcngWwd-lkp@intel.com>

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CC: kbuild-all(a)lists.01.org
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: Dmitry Osipenko <digetx@gmail.com>
CC: Thierry Reding <treding@nvidia.com>
CC: Krzysztof Kozlowski <krzk@kernel.org>
CC: Jonathan Hunter <jonathanh@nvidia.com>
CC: Joseph Lo <josephl@nvidia.com>
CC: Geert Uytterhoeven <geert+renesas@glider.be>
CC: linux-kernel(a)vger.kernel.org
CC: linux-tegra(a)vger.kernel.org

From: kernel test robot <lkp@intel.com>

drivers/memory/tegra/tegra210-emc-core.c:1695:0-23: WARNING: tegra210_emc_debug_max_rate_fops should be defined with DEFINE_DEBUGFS_ATTRIBUTE
drivers/memory/tegra/tegra210-emc-core.c:1665:0-23: WARNING: tegra210_emc_debug_min_rate_fops should be defined with DEFINE_DEBUGFS_ATTRIBUTE
drivers/memory/tegra/tegra210-emc-core.c:1726:0-23: WARNING: tegra210_emc_debug_temperature_fops should be defined with DEFINE_DEBUGFS_ATTRIBUTE

 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

Fixes: 56ebc9b0d77e ("memory: tegra: Enable compile testing for all drivers")
CC: Dmitry Osipenko <digetx@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
---

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   c7d4c1fd91ab4a6d2620497921a9c6bf54650ab8
commit: 56ebc9b0d77e0406aba2d900c82e79204cc7dc32 [6065/10489] memory: tegra: Enable compile testing for all drivers
:::::: branch date: 22 hours ago
:::::: commit date: 2 weeks ago

Please take the patch only if it's a positive warning. Thanks!

 tegra210-emc-core.c |   30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

--- a/drivers/memory/tegra/tegra210-emc-core.c
+++ b/drivers/memory/tegra/tegra210-emc-core.c
@@ -1662,9 +1662,9 @@ static int tegra210_emc_debug_min_rate_s
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(tegra210_emc_debug_min_rate_fops,
-			tegra210_emc_debug_min_rate_get,
-			tegra210_emc_debug_min_rate_set, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(tegra210_emc_debug_min_rate_fops,
+			 tegra210_emc_debug_min_rate_get,
+			 tegra210_emc_debug_min_rate_set, "%llu\n");
 
 static int tegra210_emc_debug_max_rate_get(void *data, u64 *rate)
 {
@@ -1692,9 +1692,9 @@ static int tegra210_emc_debug_max_rate_s
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(tegra210_emc_debug_max_rate_fops,
-			tegra210_emc_debug_max_rate_get,
-			tegra210_emc_debug_max_rate_set, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(tegra210_emc_debug_max_rate_fops,
+			 tegra210_emc_debug_max_rate_get,
+			 tegra210_emc_debug_max_rate_set, "%llu\n");
 
 static int tegra210_emc_debug_temperature_get(void *data, u64 *temperature)
 {
@@ -1723,9 +1723,9 @@ static int tegra210_emc_debug_temperatur
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(tegra210_emc_debug_temperature_fops,
-			tegra210_emc_debug_temperature_get,
-			tegra210_emc_debug_temperature_set, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(tegra210_emc_debug_temperature_fops,
+			 tegra210_emc_debug_temperature_get,
+			 tegra210_emc_debug_temperature_set, "%llu\n");
 
 static void tegra210_emc_debugfs_init(struct tegra210_emc *emc)
 {
@@ -1766,12 +1766,12 @@ static void tegra210_emc_debugfs_init(st
 
 	debugfs_create_file("available_rates", 0444, emc->debugfs.root, emc,
 			    &tegra210_emc_debug_available_rates_fops);
-	debugfs_create_file("min_rate", 0644, emc->debugfs.root, emc,
-			    &tegra210_emc_debug_min_rate_fops);
-	debugfs_create_file("max_rate", 0644, emc->debugfs.root, emc,
-			    &tegra210_emc_debug_max_rate_fops);
-	debugfs_create_file("temperature", 0644, emc->debugfs.root, emc,
-			    &tegra210_emc_debug_temperature_fops);
+	debugfs_create_file_unsafe("min_rate", 0644, emc->debugfs.root, emc,
+				   &tegra210_emc_debug_min_rate_fops);
+	debugfs_create_file_unsafe("max_rate", 0644, emc->debugfs.root, emc,
+				   &tegra210_emc_debug_max_rate_fops);
+	debugfs_create_file_unsafe("temperature", 0644, emc->debugfs.root,
+				   emc, &tegra210_emc_debug_temperature_fops);
 }
 
 static void tegra210_emc_detect(struct tegra210_emc *emc)

  reply	other threads:[~2021-06-17 11:18 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-17 11:18 [linux-next:master 6065/10489] drivers/memory/tegra/tegra210-emc-core.c:1695:0-23: WARNING: tegra210_emc_debug_max_rate_fops should be defined with DEFINE_DEBUGFS_ATTRIBUTE kernel test robot
2021-06-17 11:18 ` kernel test robot [this message]
  -- strict thread matches above, loose matches on Subject: below --
2021-06-17  9:58 [linux-next:master 6065/10489] drivers/memory/tegra/tegra20-emc.c:744:0-23: WARNING: tegra_emc_debug_max_rate_fops " kernel test robot
2021-06-17  9:58 ` [PATCH] memory: tegra: fix debugfs_simple_attr.cocci warnings kernel test robot
2021-06-17  9:59 ` kernel test robot

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