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Sat, 11 Apr 2026 00:25:36 -0700 (PDT) Received: from kubuntu.bits-hyderabad.ac.in ([182.75.45.16]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82f0c30ee6csm4880898b3a.4.2026.04.11.00.25.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 11 Apr 2026 00:25:36 -0700 (PDT) From: Advaith Neelacantan To: Lars-Peter Clausen Cc: Michael Hennerich , Jonathan Cameron , David Lechner , =?UTF-8?q?Nuno=20S=C3=A1?= , Andy Shevchenko , Greg Kroah-Hartman , linux-iio@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Advaith Neelacantan Subject: [PATCH] staging: iio: frequency: ad9832: use guard(mutex) for locking Date: Sat, 11 Apr 2026 12:55:04 +0530 Message-ID: <20260411072503.106621-2-advaith.neelacantan@gmail.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Replace mutex lock/unlock pairs with guard(mutex) for automatic scope-based locking. Simplifies code by removing need to manually unlock. Signed-off-by: Advaith Neelacantan --- drivers/staging/iio/frequency/ad9832.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/staging/iio/frequency/ad9832.c b/drivers/staging/iio/f= requency/ad9832.c index b87ea1781..73c47a049 100644 --- a/drivers/staging/iio/frequency/ad9832.c +++ b/drivers/staging/iio/frequency/ad9832.c @@ -181,7 +181,7 @@ static ssize_t ad9832_write(struct device *dev, struct = device_attribute *attr, if (ret) goto error_ret; =20 - mutex_lock(&st->lock); + guard(mutex)(&st->lock); switch ((u32)this_attr->address) { case AD9832_FREQ0HM: case AD9832_FREQ1HM: @@ -239,7 +239,6 @@ static ssize_t ad9832_write(struct device *dev, struct = device_attribute *attr, default: ret =3D -ENODEV; } - mutex_unlock(&st->lock); =20 error_ret: return ret ? ret : len; --=20 2.51.0