From nobody Mon Feb 9 17:34:43 2026 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 2A57D35CB9C; Fri, 23 Jan 2026 11:37:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769168248; cv=none; b=L1RtIRjr6FzwlTLuwLxZdrLh8ztDYN9LZb20iEXlCBDSx0FrEsSU52WsR2Kij0hMPQo5F2NY8ZP6YzcXJmMvteGPWRQQEV9DbVGCsj0QdVlxJWv3VeuUwwsvnpUXtHnB7m2ORdq/p3GVxYpiDkR512GVBRCoNgkyvmGLr2a5Mlw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769168248; c=relaxed/simple; bh=aiGlVd1BN8puUjJE6R0x7uIAwGUTd87MrPMBKwUJFWU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=uGwkPTh879GRD6RuQcahQQIZqSAUnmjuRtKUc0z4XHk8qoFk1RU0cyzEb/tddv+FANrzTgBfjPxqBKOzEEGLxeDDlZpUkAVmNz4w+ZBX4evNpI6yXvwQVzEvE83nmkpIE8lsJTu+v3+Gdywdkbh2sFU0a2SZTK9tP0wnIG8vTd8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=MZJ8YFCK; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=Ns2N6DET; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="MZJ8YFCK"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="Ns2N6DET" From: Sebastian Andrzej Siewior DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1769168240; 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=vpXBre8hOpdCJLr/q1ncOEZ+dMlHMQh3hprNMSGTivM=; b=MZJ8YFCKYKRuYMBkOMwk1ji4zbhy2xZw/yO7gMCTZ1m9rUvc9BFw/VxHOAGZ+hvKerSPnZ WnO9L6brsbRsFvNyKLL0SDcheWanKqbrC50sheXdTTtvXqzpvF1BAlABsY4qSlXL5ZPuH3 fibX3fr4tt66KhL5TN09ryv/bQ8WcCfYqHLbLA/CP2NqL36W9bE3NuOYJWN6xGZO5VzdNe tlYABjRBhbyqaKvRwOftidCThKZKDLVFM++WGiEdVCsydInGE2yWIo/YVsCAqX+Xr5AOG3 IvWJklgo4LgF8o98m9J1p97yHg0y3fINrBf9iF/P7HYMAV1XYAi3ZShITPMaKg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1769168240; 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=vpXBre8hOpdCJLr/q1ncOEZ+dMlHMQh3hprNMSGTivM=; b=Ns2N6DET06fM6N7BGIt/OWS3nTl68HOB4wqPKt/rAyDHSVBy4GvoHUuLBBAizGSeSyXGe8 TaII2TOz775HpkAA== To: linux-kernel@vger.kernel.org Cc: linux-rt-devel@lists.linux.dev, Thomas Gleixner , Sebastian Andrzej Siewior , Jonathan Cameron , David Lechner , =?UTF-8?q?Nuno=20S=C3=A1?= , Andy Shevchenko , Lars-Peter Clausen , Michael Hennerich , linux-iio@vger.kernel.org Subject: [PATCH 19/21] iio: Use IRQF_NO_THREAD Date: Fri, 23 Jan 2026 12:37:05 +0100 Message-ID: <20260123113708.416727-20-bigeasy@linutronix.de> In-Reply-To: <20260123113708.416727-1-bigeasy@linutronix.de> References: <20260123113708.416727-1-bigeasy@linutronix.de> 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" The interrupt handler iio_trigger_generic_data_rdy_poll() will invoke other interrupt handler and this supposed to happen from within the hardirq. Use IRQF_NO_THREAD to forbid forced-threading. Cc: Jonathan Cameron Cc: David Lechner Cc: "Nuno S=C3=A1" Cc: Andy Shevchenko Cc: Lars-Peter Clausen Cc: Michael Hennerich Cc: linux-iio@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior --- drivers/iio/accel/bma180.c | 5 +++-- drivers/iio/adc/ad7766.c | 10 ++-------- drivers/iio/gyro/itg3200_buffer.c | 2 +- drivers/iio/light/si1145.c | 2 +- 4 files changed, 7 insertions(+), 12 deletions(-) diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c index 8925f5279e627..7bc6761f51354 100644 --- a/drivers/iio/accel/bma180.c +++ b/drivers/iio/accel/bma180.c @@ -986,8 +986,9 @@ static int bma180_probe(struct i2c_client *client) } =20 ret =3D devm_request_irq(dev, client->irq, - iio_trigger_generic_data_rdy_poll, IRQF_TRIGGER_RISING, - "bma180_event", data->trig); + iio_trigger_generic_data_rdy_poll, + IRQF_TRIGGER_RISING | IRQF_NO_THREAD, + "bma180_event", data->trig); if (ret) { dev_err(dev, "unable to request IRQ\n"); goto err_trigger_free; diff --git a/drivers/iio/adc/ad7766.c b/drivers/iio/adc/ad7766.c index 4d570383ef025..9e4a66477d2d0 100644 --- a/drivers/iio/adc/ad7766.c +++ b/drivers/iio/adc/ad7766.c @@ -184,12 +184,6 @@ static const struct iio_info ad7766_info =3D { .read_raw =3D &ad7766_read_raw, }; =20 -static irqreturn_t ad7766_irq(int irq, void *private) -{ - iio_trigger_poll(private); - return IRQ_HANDLED; -} - static int ad7766_set_trigger_state(struct iio_trigger *trig, bool enable) { struct ad7766 *ad7766 =3D iio_trigger_get_drvdata(trig); @@ -260,8 +254,8 @@ static int ad7766_probe(struct spi_device *spi) * Some platforms might not allow the option to power it down so * don't enable the interrupt to avoid extra load on the system */ - ret =3D devm_request_irq(&spi->dev, spi->irq, ad7766_irq, - IRQF_TRIGGER_FALLING | IRQF_NO_AUTOEN, + ret =3D devm_request_irq(&spi->dev, spi->irq, iio_trigger_generic_data_r= dy_poll, + IRQF_TRIGGER_FALLING | IRQF_NO_AUTOEN | IRQF_NO_THREAD, dev_name(&spi->dev), ad7766->trig); if (ret < 0) diff --git a/drivers/iio/gyro/itg3200_buffer.c b/drivers/iio/gyro/itg3200_b= uffer.c index a624400a239cb..767b87b7feea7 100644 --- a/drivers/iio/gyro/itg3200_buffer.c +++ b/drivers/iio/gyro/itg3200_buffer.c @@ -120,7 +120,7 @@ int itg3200_probe_trigger(struct iio_dev *indio_dev) =20 ret =3D request_irq(st->i2c->irq, &iio_trigger_generic_data_rdy_poll, - IRQF_TRIGGER_RISING, + IRQF_NO_THREAD | IRQF_TRIGGER_RISING, "itg3200_data_rdy", st->trig); if (ret) diff --git a/drivers/iio/light/si1145.c b/drivers/iio/light/si1145.c index f8eb251eca8dc..ef0abc4499b74 100644 --- a/drivers/iio/light/si1145.c +++ b/drivers/iio/light/si1145.c @@ -1248,7 +1248,7 @@ static int si1145_probe_trigger(struct iio_dev *indio= _dev) =20 ret =3D devm_request_irq(&client->dev, client->irq, iio_trigger_generic_data_rdy_poll, - IRQF_TRIGGER_FALLING, + IRQF_TRIGGER_FALLING | IRQF_NO_THREAD, "si1145_irq", trig); if (ret < 0) { --=20 2.51.0