linux-kernel - [PATCH RFC 4/6] iio: light: vcnl4000: Use cleanup.h for IIO locks

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Message-Id: <20251203-lock-impr-v1-4-b4a1fd639423@gmail.com>
Date: Wed, 03 Dec 2025 14:18:18 -0500
From: Kurt Borja <kuurtb@...il.com>
To: Andy Shevchenko <andriy.shevchenko@...el.com>, 
 Lars-Peter Clausen <lars@...afoo.de>, 
 Michael Hennerich <Michael.Hennerich@...log.com>, 
 Jonathan Cameron <jic23@...nel.org>, Benson Leung <bleung@...omium.org>, 
 Antoniu Miclaus <antoniu.miclaus@...log.com>, 
 Gwendal Grignou <gwendal@...omium.org>, 
 Shrikant Raskar <raskar.shree97@...il.com>, 
 Per-Daniel Olsson <perdaniel.olsson@...s.com>
Cc: David Lechner <dlechner@...libre.com>, 
 Nuno Sá <nuno.sa@...log.com>, 
 Andy Shevchenko <andy@...nel.org>, Guenter Roeck <groeck@...omium.org>, 
 Jonathan Cameron <Jonathan.Cameron@...wei.com>, linux-iio@...r.kernel.org, 
 linux-kernel@...r.kernel.org, chrome-platform@...ts.linux.dev, 
 Kurt Borja <kuurtb@...il.com>
Subject: [PATCH RFC 4/6] iio: light: vcnl4000: Use cleanup.h for IIO locks

Use ACQUIRE() for iio_device_claim_direct().

Signed-off-by: Kurt Borja <kuurtb@...il.com>
---
 drivers/iio/light/vcnl4000.c | 24 ++++++++----------------
 1 file changed, 8 insertions(+), 16 deletions(-)

diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
index 4dbb2294a843..55e5060ce337 100644
--- a/drivers/iio/light/vcnl4000.c
+++ b/drivers/iio/light/vcnl4000.c
@@ -25,6 +25,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/interrupt.h>
 #include <linux/units.h>
+#include <linux/cleanup.h>
 
 #include <linux/iio/buffer.h>
 #include <linux/iio/events.h>
@@ -1148,36 +1149,27 @@ static int vcnl4010_write_raw(struct iio_dev *indio_dev,
 			      struct iio_chan_spec const *chan,
 			      int val, int val2, long mask)
 {
-	int ret;
 	struct vcnl4000_data *data = iio_priv(indio_dev);
 
-	if (!iio_device_claim_direct(indio_dev))
+	ACQUIRE(iio_device_claim_direct, busy)(indio_dev);
+	if (ACQUIRE_ERR(iio_device_claim_direct, &busy))
 		return -EBUSY;
 
 	/* Protect against event capture. */
-	if (vcnl4010_is_in_periodic_mode(data)) {
-		ret = -EBUSY;
-		goto end;
-	}
+	if (vcnl4010_is_in_periodic_mode(data))
+		return -EBUSY;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		switch (chan->type) {
 		case IIO_PROXIMITY:
-			ret = vcnl4010_write_proxy_samp_freq(data, val, val2);
-			goto end;
+			return vcnl4010_write_proxy_samp_freq(data, val, val2);
 		default:
-			ret = -EINVAL;
-			goto end;
+			return -EINVAL;
 		}
 	default:
-		ret = -EINVAL;
-		goto end;
+		return -EINVAL;
 	}
-
-end:
-	iio_device_release_direct(indio_dev);
-	return ret;
 }
 
 static int vcnl4010_read_event(struct iio_dev *indio_dev,

-- 
2.52.0