linux-kernel - [PATCH 2/2] iio: imu: adis16460: use DEFINE_DEBUGFS_ATTRIBUTE instead of DEFINE_SIMPLE

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Message-Id: <20200328063456.24012-3-rohitsarkar5398@gmail.com>
Date:   Sat, 28 Mar 2020 12:04:55 +0530
From:   Rohit Sarkar <rohitsarkar5398@...il.com>
To:     linux-iio@...r.kernel.org
Cc:     dragos.bogdan@...log.com, Rohit Sarkar <rohitsarkar5398@...il.com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Stefan Popa <stefan.popa@...log.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] iio: imu: adis16460: use DEFINE_DEBUGFS_ATTRIBUTE instead of DEFINE_SIMPLE_ATTRIBUTE

debugfs_create_file_unsafe does not protect the fops handed to it
against file removal. DEFINE_DEBUGFS_ATTRIBUTE makes the fops aware of
the file lifetime and thus protects it against removal.

Signed-off-by: Rohit Sarkar <rohitsarkar5398@...il.com>
---
 drivers/iio/imu/adis16460.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/imu/adis16460.c b/drivers/iio/imu/adis16460.c
index 9539cfe4a259..ef22de5c0211 100644
--- a/drivers/iio/imu/adis16460.c
+++ b/drivers/iio/imu/adis16460.c
@@ -87,7 +87,7 @@ static int adis16460_show_serial_number(void *arg, u64 *val)
 
 	return 0;
 }
-DEFINE_SIMPLE_ATTRIBUTE(adis16460_serial_number_fops,
+DEFINE_DEBUGFS_ATTRIBUTE(adis16460_serial_number_fops,
 	adis16460_show_serial_number, NULL, "0x%.4llx\n");
 
 static int adis16460_show_product_id(void *arg, u64 *val)
@@ -105,7 +105,7 @@ static int adis16460_show_product_id(void *arg, u64 *val)
 
 	return 0;
 }
-DEFINE_SIMPLE_ATTRIBUTE(adis16460_product_id_fops,
+DEFINE_DEBUGFS_ATTRIBUTE(adis16460_product_id_fops,
 	adis16460_show_product_id, NULL, "%llu\n");
 
 static int adis16460_show_flash_count(void *arg, u64 *val)
@@ -123,7 +123,7 @@ static int adis16460_show_flash_count(void *arg, u64 *val)
 
 	return 0;
 }
-DEFINE_SIMPLE_ATTRIBUTE(adis16460_flash_count_fops,
+DEFINE_DEBUGFS_ATTRIBUTE(adis16460_flash_count_fops,
 	adis16460_show_flash_count, NULL, "%lld\n");
 
 static int adis16460_debugfs_init(struct iio_dev *indio_dev)
-- 
2.23.0.385.gbc12974a89