linux-kernel - [PATCH 2/4] iio: hid-sensor-gyro-3d: add module alias for autoload

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Message-Id: <1373445120-5407-3-git-send-email-holler@ahsoftware.de>
Date:	Wed, 10 Jul 2013 10:31:58 +0200
From:	Alexander Holler <holler@...oftware.de>
To:	linux-kernel@...r.kernel.org
Cc:	linux-iio@...r.kernel.org, Jonathan Cameron <jic23@....ac.uk>,
	Srinivas Pandruvada <srinivas.pandruvada@...el.com>,
	Alexander Holler <holler@...oftware.de>
Subject: [PATCH 2/4] iio: hid-sensor-gyro-3d: add module alias for autoload

Add a MODULE_DEVICE_TABLE in order to let hotplug mechanisms automatically
load the driver.

This makes it also possible to use the usual driver name instead of
HID-SENSOR-2000xx which isn't very descriptive in kernel messages.

Signed-off-by: Alexander Holler <holler@...oftware.de>
---
 drivers/iio/gyro/hid-sensor-gyro-3d.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/iio/gyro/hid-sensor-gyro-3d.c b/drivers/iio/gyro/hid-sensor-gyro-3d.c
index bc943dd..9cc8aa1 100644
--- a/drivers/iio/gyro/hid-sensor-gyro-3d.c
+++ b/drivers/iio/gyro/hid-sensor-gyro-3d.c
@@ -30,10 +30,6 @@
 #include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
-/*Format: HID-SENSOR-usage_id_in_hex*/
-/*Usage ID from spec for Gyro-3D: 0x200076*/
-#define DRIVER_NAME "HID-SENSOR-200076"
-
 enum gyro_3d_channel {
 	CHANNEL_SCAN_INDEX_X,
 	CHANNEL_SCAN_INDEX_Y,
@@ -389,9 +385,19 @@ static int hid_gyro_3d_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static struct platform_device_id hid_gyro_3d_ids[] = {
+	{
+		/* Format: HID-SENSOR-usage_id_in_hex_lowercase */
+		.name = "HID-SENSOR-200076",
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, hid_gyro_3d_ids);
+
 static struct platform_driver hid_gyro_3d_platform_driver = {
+	.id_table = hid_gyro_3d_ids,
 	.driver = {
-		.name	= DRIVER_NAME,
+		.name	= KBUILD_MODNAME,
 		.owner	= THIS_MODULE,
 	},
 	.probe		= hid_gyro_3d_probe,
-- 
1.8.1.5

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