From nobody Tue Feb 10 11:55:29 2026 Received: from mail.subdimension.ro (nalicastle.subdimension.ro [172.105.74.154]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C17DB3128A1; Thu, 18 Dec 2025 11:14:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=172.105.74.154 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766056469; cv=none; b=GjAF68tJOuzbsFap3bxrj7rd7qdyyJrBJBejGQs0c/09bnU8p+aR1b4o92bLWLz4P1Qpp0uvBa5QmBYyDriyZJPmB1i2qOY7eho4syQUhQAyc6sA54mXIv7A23B9pcwdqWBZvI/eLjC5PTG2Zo+9DFwuZR8m3/DbzkYedDUnvEk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766056469; c=relaxed/simple; bh=1coGTefDFpJud9GjaT9tBoJNihKOd+3uZmtnEgI/peU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=UGJcVMCtqqLX3j2iwPPZV0QWwzinCaEz7iHzfPNAoGKbzwuIV0Tg+7vvapr0OqjN7tlYE3uKb1LLJQVfx4elH5QsSDwVWDrLu4IAXlfw55k+mNg9stfTexpmT4hfifeQODVj//sgf0EzJg9uvd9biJfttalHU6cV4YZ9Tu2M/mE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=subdimension.ro; spf=pass smtp.mailfrom=subdimension.ro; dkim=pass (2048-bit key) header.d=subdimension.ro header.i=@subdimension.ro header.b=aMrj6yMW; arc=none smtp.client-ip=172.105.74.154 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=subdimension.ro Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=subdimension.ro Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=subdimension.ro header.i=@subdimension.ro header.b="aMrj6yMW" Received: from sunspire.home.arpa (unknown [IPv6:2a02:2f0e:3804:ac00:e2d5:5eff:fed9:f1c4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mail.subdimension.ro (Postfix) with ESMTPSA id 9D8A516020B; Thu, 18 Dec 2025 13:06:16 +0200 (EET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=subdimension.ro; s=mail; t=1766055976; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qMjFVRQ20JyE32MWgj0CsR8LhHhUMC95H0NKR5JiROQ=; b=aMrj6yMWu9wEqQxyBox3sJNIsaCPQLYp65JGVSfrb5tb9nYVP/pJ2lGtBqnyIN+nb2yTZR wymMV/9mUfGJytyZpAu1h0i9kp9kVOwQ8mn7u2JpGJcsSgfyJG9xJOlYz+IVMR/acSwz5E Ov6SKTEGQq2tnOI+r43+HYiQMBowAhjRxAxmBg+gjHXZVtSBCSMREiqEKIYyqI3NcoOqYZ 7P+V3OZWfVCDI7rSzIgc8j6RCSye2YQR5v5vxLo5UT2sMM1o7RDERrJsMQaNNui6M0pEKw 9uOBrgb8cNOd8njnQC1P0M6KwKxaxO2JXRCkEvKA+OdaWI3HWk2z57zMdQF3zg== From: Petre Rodan Date: Thu, 18 Dec 2025 13:05:44 +0200 Subject: [PATCH 02/14] iio: pressure: mprls0025pa: remove redundant mutex Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251218-mprls_cleanup-v1-2-b36a170f1a5c@subdimension.ro> References: <20251218-mprls_cleanup-v1-0-b36a170f1a5c@subdimension.ro> In-Reply-To: <20251218-mprls_cleanup-v1-0-b36a170f1a5c@subdimension.ro> To: Jonathan Cameron , David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , Andreas Klinger Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Jonathan Cameron X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=2917; i=petre.rodan@subdimension.ro; h=from:subject:message-id; bh=1coGTefDFpJud9GjaT9tBoJNihKOd+3uZmtnEgI/peU=; b=LS0tLS1CRUdJTiBQR1AgTUVTU0FHRS0tLS0tCgpvd0o0bkFGdEFwTDlrQTBEQUFvQmRDc25wM k02U1dNQnl5WmlBR2xENEE5eDZTSXBBREY3eENCbGlwWEJJdHdHCm1zMjREWUF2dHY2cUNzenJ3 U04vZ0lrQ013UUFBUW9BSFJZaEJCb2ltQncrRGJ4UXBFNmlkM1FySjZkak9rbGoKQlFKcFErQVB BQW9KRUhRcko2ZGpPa2xqUGxrUC8zRUlxWGFOU2lRK0t6YStlelRCaDMweGNrNVlZOThmdEtqLw oydHNJUi9IYlA4SmJvQUxFaURTNW5RdldsVHF6QjN4SFNCbjg3U29XaXdhUnBWMzRISWxEanNuV FY0Sk9iZEl3CkFLcmw3Vzg3NUF0RUhoWHJRRFlSazQ1dzBybXV6clppdkE5Uy84dXpZbWI3VGs4 VnczSU9jblRIdHRMWkZoalkKSUIxU0xuS1N1bENJS2J1K3ZOZHljY2taeXNFSEVSMzg4d1NZdjY 3aS8rMTVLcExwUzJ6ek9uQkxoTjMxc3NVcQo3NDlseGxiQzdaWVJoL3lpMHdzVnJDeVNnVFFhWm h4ZkJRYlVqTm5uNjVZUGpheTRtUUo1VzcycTVVeEZockcvCk0rSVV2ajFaM3piMlFROFVSdnlhT EcyMFhFWXhrcW1tYkZPTEJXRDBiMnNybXpmSGtUWHRMZVdRTFNGckhzZkYKenJRcmtvRkpRTmYx S1hBMjAxRzRQR2pGSDNYVytrNWFaYkFuVDFQOEV5M1dXNVV0SjRIMWJBclFOUDNHL2lZMApyaml PU0Y4YXFjbUtKMWFEbkMzQTY1VTdoUFVpOGNxcjBiWlA0TWkyY1VOTzhYQUhIWXVnZ1owWDByYj RBTW1FCkZpR2c2MGo3RVp1U1ViRlhMcW96Unl6Q092UWczRGZNV29KRDUzNENwM0thcElzcmxaL 1FVa1NvM1FrMHRtNXYKcmFHWnVkTy9xVW9FeEZSWlpnYUJYZGNwYUREMEFuOUlJTlNpcEZ5ZmZD S0NyTFlGQ3I0T0Z2aFA2VmlCV3JrSwpEYVE4SjRHckRsMnRQaTA4SWVMVi9WMjYveXNETVB6dEw 1VEVuMmVUQi9vNW5pM1doeTlXSE5tSkxhUVBIZ2hFClVHSFdTbkpSeEVRYldnPT0KPXBscysKLS 0tLS1FTkQgUEdQIE1FU1NBR0UtLS0tLQo= X-Developer-Key: i=petre.rodan@subdimension.ro; a=openpgp; fpr=D80A7FC176151935EC3E5FA9CF269999844E7F30 Remove the redundant mutex since both i2c and spi transfer functions provide their own locking mechanism. Signed-off-by: Petre Rodan --- drivers/iio/pressure/mprls0025pa.c | 6 ------ drivers/iio/pressure/mprls0025pa.h | 3 --- 2 files changed, 9 deletions(-) diff --git a/drivers/iio/pressure/mprls0025pa.c b/drivers/iio/pressure/mprl= s0025pa.c index 2336f2760eae..d3e76eed07e6 100644 --- a/drivers/iio/pressure/mprls0025pa.c +++ b/drivers/iio/pressure/mprls0025pa.c @@ -188,7 +188,6 @@ static void mpr_reset(struct mpr_data *data) * If there is an end of conversion (EOC) interrupt registered the function * waits for a maximum of one second for the interrupt. * - * Context: The function can sleep and data->lock should be held when call= ing it * Return: * * 0 - OK, the pressure value could be read * * -ETIMEDOUT - Timeout while waiting for the EOC interrupt or busy flag= is @@ -273,7 +272,6 @@ static irqreturn_t mpr_trigger_handler(int irq, void *p) struct iio_dev *indio_dev =3D pf->indio_dev; struct mpr_data *data =3D iio_priv(indio_dev); =20 - mutex_lock(&data->lock); ret =3D mpr_read_pressure(data, &data->chan.pres); if (ret < 0) goto err; @@ -282,7 +280,6 @@ static irqreturn_t mpr_trigger_handler(int irq, void *p) iio_get_time_ns(indio_dev)); =20 err: - mutex_unlock(&data->lock); iio_trigger_notify_done(indio_dev->trig); =20 return IRQ_HANDLED; @@ -300,9 +297,7 @@ static int mpr_read_raw(struct iio_dev *indio_dev, =20 switch (mask) { case IIO_CHAN_INFO_RAW: - mutex_lock(&data->lock); ret =3D mpr_read_pressure(data, &pressure); - mutex_unlock(&data->lock); if (ret < 0) return ret; *val =3D pressure; @@ -342,7 +337,6 @@ int mpr_common_probe(struct device *dev, const struct m= pr_ops *ops, int irq) data->ops =3D ops; data->irq =3D irq; =20 - mutex_init(&data->lock); init_completion(&data->completion); =20 indio_dev->name =3D "mprls0025pa"; diff --git a/drivers/iio/pressure/mprls0025pa.h b/drivers/iio/pressure/mprl= s0025pa.h index d62a018eaff3..d38ac750e392 100644 --- a/drivers/iio/pressure/mprls0025pa.h +++ b/drivers/iio/pressure/mprls0025pa.h @@ -14,7 +14,6 @@ #include #include #include -#include #include #include =20 @@ -44,7 +43,6 @@ enum mpr_func_id { * struct mpr_data * @dev: current device structure * @ops: functions that implement the sensor reads/writes, bus init - * @lock: access to device during read * @pmin: minimal pressure in pascal * @pmax: maximal pressure in pascal * @function: transfer function @@ -66,7 +64,6 @@ enum mpr_func_id { struct mpr_data { struct device *dev; const struct mpr_ops *ops; - struct mutex lock; u32 pmin; u32 pmax; enum mpr_func_id function; --=20 2.51.2