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Message-Id: <20200331114732.14739-2-rohitsarkar5398@gmail.com>
Date: Tue, 31 Mar 2020 17:17:30 +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 v2 1/2] iio: imu: adis16400: 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/adis16400.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
diff --git a/drivers/iio/imu/adis16400.c b/drivers/iio/imu/adis16400.c
index cfb1c19eb930..c8fcd40f58c0 100644
--- a/drivers/iio/imu/adis16400.c
+++ b/drivers/iio/imu/adis16400.c
@@ -258,7 +258,7 @@ static int adis16400_show_product_id(void *arg, u64 *val)
return 0;
}
-DEFINE_SIMPLE_ATTRIBUTE(adis16400_product_id_fops,
+DEFINE_DEBUGFS_ATTRIBUTE(adis16400_product_id_fops,
adis16400_show_product_id, NULL, "%lld\n");
static int adis16400_show_flash_count(void *arg, u64 *val)
@@ -275,7 +275,7 @@ static int adis16400_show_flash_count(void *arg, u64 *val)
return 0;
}
-DEFINE_SIMPLE_ATTRIBUTE(adis16400_flash_count_fops,
+DEFINE_DEBUGFS_ATTRIBUTE(adis16400_flash_count_fops,
adis16400_show_flash_count, NULL, "%lld\n");
static int adis16400_debugfs_init(struct iio_dev *indio_dev)
@@ -283,15 +283,16 @@ static int adis16400_debugfs_init(struct iio_dev *indio_dev)
struct adis16400_state *st = iio_priv(indio_dev);
if (st->variant->flags & ADIS16400_HAS_SERIAL_NUMBER)
- debugfs_create_file("serial_number", 0400,
- indio_dev->debugfs_dentry, st,
- &adis16400_serial_number_fops);
+ debugfs_create_file_unsafe("serial_number", 0400,
+ indio_dev->debugfs_dentry, st,
+ &adis16400_serial_number_fops);
if (st->variant->flags & ADIS16400_HAS_PROD_ID)
- debugfs_create_file("product_id", 0400,
+ debugfs_create_file_unsafe("product_id", 0400,
+ indio_dev->debugfs_dentry, st,
+ &adis16400_product_id_fops);
+ debugfs_create_file_unsafe("flash_count", 0400,
indio_dev->debugfs_dentry, st,
- &adis16400_product_id_fops);
- debugfs_create_file("flash_count", 0400, indio_dev->debugfs_dentry,
- st, &adis16400_flash_count_fops);
+ &adis16400_flash_count_fops);
return 0;
}
--
2.23.0.385.gbc12974a89
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