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From:   Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To:     Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        Charles Keepax <ckeepax@opensource.wolfsonmicro.com>,
        Robert Jarzmik <robert.jarzmik@free.fr>,
        Mark Brown <broonie@kernel.org>
Cc:     linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
        Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
        patches@opensource.cirrus.com, linux-input@vger.kernel.org
Subject: [PATCH] Input: wm97xx: Simplify resource management
Date:   Sun, 30 Jan 2022 09:06:36 +0100
Message-Id: <87dce7e80ea9b191843fa22415ca3aef5f3cc2e6.1643529968.git.christophe.jaillet@wanadoo.fr>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Since the commit in the Fixes tag below, 'wm->input_dev' is a managed
resource that doesn't need to be explicitly unregistered or freed (see
devm_input_allocate_device() documentation)

So, remove some unless line of code to slightly simplify it.

Fixes: c72f61e74073 ("Input: wm97xx: split out touchscreen registering")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
Compile tested only
---
 drivers/input/touchscreen/wm97xx-core.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c
index 78d2ee99f37a..1b58611c8084 100644
--- a/drivers/input/touchscreen/wm97xx-core.c
+++ b/drivers/input/touchscreen/wm97xx-core.c
@@ -615,10 +615,9 @@ static int wm97xx_register_touch(struct wm97xx *wm)
 	 * extensions)
 	 */
 	wm->touch_dev = platform_device_alloc("wm97xx-touch", -1);
-	if (!wm->touch_dev) {
-		ret = -ENOMEM;
-		goto touch_err;
-	}
+	if (!wm->touch_dev)
+		return -ENOMEM;
+
 	platform_set_drvdata(wm->touch_dev, wm);
 	wm->touch_dev->dev.parent = wm->dev;
 	wm->touch_dev->dev.platform_data = pdata;
@@ -629,9 +628,6 @@ static int wm97xx_register_touch(struct wm97xx *wm)
 	return 0;
 touch_reg_err:
 	platform_device_put(wm->touch_dev);
-touch_err:
-	input_unregister_device(wm->input_dev);
-	wm->input_dev = NULL;
 
 	return ret;
 }
@@ -639,8 +635,6 @@ static int wm97xx_register_touch(struct wm97xx *wm)
 static void wm97xx_unregister_touch(struct wm97xx *wm)
 {
 	platform_device_unregister(wm->touch_dev);
-	input_unregister_device(wm->input_dev);
-	wm->input_dev = NULL;
 }
 
 static int _wm97xx_probe(struct wm97xx *wm)
-- 
2.32.0