linux-kernel - [PATCH 3.16 083/148] iio: adis16480: Add debugfs_reg

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Message-ID: <lsq.1581185940.73830083@decadent.org.uk>
Date:   Sat, 08 Feb 2020 18:20:22 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        "Nuno Sá" <nuno.sa@...log.com>,
        "Jonathan Cameron" <Jonathan.Cameron@...wei.com>
Subject: [PATCH 3.16 083/148] iio: adis16480: Add debugfs_reg_access entry

3.16.82-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Nuno Sá <nuno.sa@...log.com>

commit 4c35b7a51e2f291471f7221d112c6a45c63e83bc upstream.

The driver is defining debugfs entries by calling
`adis16480_debugfs_init()`. However, those entries are attached to the
iio_dev debugfs entry which won't exist if no debugfs_reg_access
callback is provided.

Fixes: 2f3abe6cbb6c ("iio:imu: Add support for the ADIS16480 and similar IMUs")
Signed-off-by: Nuno Sá <nuno.sa@...log.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/iio/imu/adis16480.c | 1 +
 1 file changed, 1 insertion(+)

--- a/drivers/iio/imu/adis16480.c
+++ b/drivers/iio/imu/adis16480.c
@@ -760,6 +760,7 @@ static const struct iio_info adis16480_i
 	.read_raw = &adis16480_read_raw,
 	.write_raw = &adis16480_write_raw,
 	.update_scan_mode = adis_update_scan_mode,
+	.debugfs_reg_access = adis_debugfs_reg_access,
 	.driver_module = THIS_MODULE,
 };