[PATCH v2 1/2] iio: imu: adis16400: use DEFINE_DEBUGFS_ATTRIBUTE instead of DEFINE_SIMPLE_ATTRIBUTE

[Rohit Sarkar]

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@xxxxxxxxx>
---
 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