From: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
To: linux-input@vger.kernel.org, linux-acpi@vger.kernel.org,
linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-tegra@vger.kernel.org,
patches@opensource.cirrus.com,
ibm-acpi-devel@lists.sourceforge.net,
platform-driver-x86@vger.kernel.org
Cc: "Rafael J . Wysocki" <rjw@rjwysocki.net>,
Len Brown <lenb@kernel.org>, Jonathan Cameron <jic23@kernel.org>,
Hartmut Knaack <knaack.h@gmx.de>,
Lars-Peter Clausen <lars@metafoo.de>,
Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
Kukjin Kim <kgene@kernel.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
Vladimir Zapolskiy <vz@mleia.com>,
Sylvain Lemieux <slemieux.tyco@gmail.com>,
Laxman Dewangan <ldewangan@nvidia.com>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Barry Song <baohua@kernel.org>,
Michael Hennerich <michael.hennerich@analog.com>,
Nick Dyer <nick@shmanahar.org>,
Hans de Goede <hdegoede@redhat.com>,
Ferruh Yigit <fery@cypress.com>, Sangwon Jee <jeesw@melfas.com>,
Henrique de Moraes Holschuh <ibm-acpi@hmh.eng.br>,
Andrzej Pietrasiewicz <andrzej.p@collabora.com>,
kernel@collabora.com
Subject: [PATCHv2 1/7] Input: add input_device_enabled()
Date: Fri, 15 May 2020 18:51:51 +0200 [thread overview]
Message-ID: <20200515165151.28670-1-andrzej.p@collabora.com> (raw)
In-Reply-To: <20200515164943.28480-1-andrzej.p@collabora.com>
A helper function for drivers to decide if the device is used or not.
A lockdep check is introduced as inspecting ->users should be done under
input device's mutex.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
---
drivers/input/input.c | 8 ++++++++
include/linux/input.h | 2 ++
2 files changed, 10 insertions(+)
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 3cfd2c18eebd..41377bfa142d 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -2127,6 +2127,14 @@ void input_enable_softrepeat(struct input_dev *dev, int delay, int period)
}
EXPORT_SYMBOL(input_enable_softrepeat);
+bool input_device_enabled(struct input_dev *dev)
+{
+ lockdep_assert_held(&dev->mutex);
+
+ return dev->users > 0;
+}
+EXPORT_SYMBOL_GPL(input_device_enabled);
+
/**
* input_register_device - register device with input core
* @dev: device to be registered
diff --git a/include/linux/input.h b/include/linux/input.h
index 56f2fd32e609..eda4587dba67 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -502,6 +502,8 @@ bool input_match_device_id(const struct input_dev *dev,
void input_enable_softrepeat(struct input_dev *dev, int delay, int period);
+bool input_device_enabled(struct input_dev *dev);
+
extern struct class input_class;
/**
--
2.17.1
next prev parent reply other threads:[~2020-05-15 16:52 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200506002746.GB89269@dtor-ws>
2020-05-15 16:49 ` [PATCHv2 0/7] Support inhibiting input devices Andrzej Pietrasiewicz
2020-05-15 16:51 ` Andrzej Pietrasiewicz [this message]
2020-05-15 16:52 ` [PATCHv2 4/7] iio: adc: exynos: Use input_device_enabled() Andrzej Pietrasiewicz
2020-05-15 16:52 ` [PATCHv2 6/7] Input: Add "inhibited" property Andrzej Pietrasiewicz
2020-05-15 18:19 ` [PATCHv2 0/7] Support inhibiting input devices Hans de Goede
2020-05-17 22:55 ` Peter Hutterer
2020-05-18 2:40 ` Dmitry Torokhov
2020-05-18 7:36 ` Hans de Goede
2020-05-22 15:35 ` Andrzej Pietrasiewicz
2020-05-27 6:13 ` Peter Hutterer
2020-05-18 10:48 ` Andrzej Pietrasiewicz
2020-05-18 12:24 ` Hans de Goede
2020-05-18 13:49 ` Andrzej Pietrasiewicz
2020-05-18 14:23 ` Hans de Goede
2020-05-19 9:02 ` Andrzej Pietrasiewicz
2020-05-19 9:36 ` Hans de Goede
2020-05-27 6:34 ` Dmitry Torokhov
2020-06-02 16:56 ` Andrzej Pietrasiewicz
2020-06-02 17:52 ` Dmitry Torokhov
2020-06-02 18:50 ` Andrzej Pietrasiewicz
2020-06-02 20:19 ` Hans de Goede
2020-06-03 13:07 ` Andrzej Pietrasiewicz
2020-06-03 17:38 ` Hans de Goede
2020-06-03 17:54 ` Andrzej Pietrasiewicz
2020-06-03 19:37 ` Hans de Goede
2020-06-04 7:28 ` Dmitry Torokhov
2020-06-05 17:33 ` [PATCH v3 " Andrzej Pietrasiewicz
2020-06-05 17:33 ` [PATCH v3 1/7] Input: add input_device_enabled() Andrzej Pietrasiewicz
2020-06-05 17:33 ` [PATCH v3 2/7] Input: use input_device_enabled() Andrzej Pietrasiewicz
2020-06-05 17:33 ` [PATCH v3 3/7] ACPI: button: Access input device's users under appropriate mutex Andrzej Pietrasiewicz
2020-06-05 17:33 ` [PATCH v3 4/7] ACPI: button: Use input_device_enabled() helper Andrzej Pietrasiewicz
2020-06-05 17:33 ` [PATCH v3 5/7] iio: adc: exynos: Use input_device_enabled() Andrzej Pietrasiewicz
2020-06-05 19:49 ` Michał Mirosław
2020-06-05 17:33 ` [PATCH v3 6/7] platform/x86: thinkpad_acpi: " Andrzej Pietrasiewicz
2020-06-05 17:33 ` [PATCH v3 7/7] Input: Add "inhibited" property Andrzej Pietrasiewicz
2020-06-05 17:41 ` Hans de Goede
2020-06-08 11:22 ` [PATCH v4 0/7] Support inhibiting input devices Andrzej Pietrasiewicz
2020-06-08 11:22 ` [PATCH v4 1/7] Input: add input_device_enabled() Andrzej Pietrasiewicz
2020-12-03 6:25 ` Dmitry Torokhov
2020-06-08 11:22 ` [PATCH v4 2/7] Input: use input_device_enabled() Andrzej Pietrasiewicz
2020-12-03 6:26 ` Dmitry Torokhov
[not found] ` <CGME20201207133237eucas1p26f8484944760a14e51dc7353ed33cd28@eucas1p2.samsung.com>
2020-12-07 13:32 ` Marek Szyprowski
2020-12-07 15:50 ` Andrzej Pietrasiewicz
2020-12-08 10:05 ` Marek Szyprowski
2020-12-09 6:37 ` Dmitry Torokhov
2020-12-11 7:09 ` [PATCH] Input: cyapa - do not call input_device_enabled from power mode handler Dmitry Torokhov
2020-12-11 8:22 ` Marek Szyprowski
2020-12-11 8:31 ` Dmitry Torokhov
2020-06-08 11:22 ` [PATCH v4 3/7] ACPI: button: Access input device's users under appropriate mutex Andrzej Pietrasiewicz
2020-06-24 15:00 ` Rafael J. Wysocki
2020-06-25 5:23 ` Dmitry Torokhov
2020-06-25 10:55 ` Rafael J. Wysocki
2020-10-05 5:08 ` Dmitry Torokhov
2020-06-08 11:22 ` [PATCH v4 4/7] ACPI: button: Use input_device_enabled() helper Andrzej Pietrasiewicz
2020-06-25 5:24 ` Dmitry Torokhov
2020-10-05 5:06 ` Dmitry Torokhov
2020-06-08 11:22 ` [PATCH v4 5/7] iio: adc: exynos: Use input_device_enabled() Andrzej Pietrasiewicz
2020-06-10 1:28 ` Michał Mirosław
2020-06-10 7:52 ` [FIXED PATCH " Andrzej Pietrasiewicz
2020-06-08 11:22 ` [PATCH v4 6/7] platform/x86: thinkpad_acpi: " Andrzej Pietrasiewicz
2020-06-08 11:22 ` [PATCH v4 7/7] Input: Add "inhibited" property Andrzej Pietrasiewicz
2020-10-05 18:10 ` Dmitry Torokhov
2020-10-06 13:04 ` Andrzej Pietrasiewicz
2020-10-07 1:11 ` Dmitry Torokhov
2020-10-07 1:12 ` Dmitry Torokhov
2020-12-03 6:26 ` Dmitry Torokhov
2020-06-10 9:49 ` [PATCH v4 0/7] Support inhibiting input devices Hans de Goede
2020-06-10 10:38 ` Rafael J. Wysocki
2020-06-10 13:12 ` Andrzej Pietrasiewicz
2020-06-10 13:21 ` Hans de Goede
2020-06-10 13:41 ` Andrzej Pietrasiewicz
2020-06-12 8:30 ` Hans de Goede
2020-06-12 8:47 ` Andrzej Pietrasiewicz
2020-06-16 17:29 ` [PATCH] Input: document inhibiting Andrzej Pietrasiewicz
2020-06-16 17:38 ` Randy Dunlap
2020-06-17 7:44 ` Hans de Goede
2020-06-17 10:18 ` [PATCH v2] " Andrzej Pietrasiewicz
2020-06-17 10:21 ` Hans de Goede
2020-06-17 16:52 ` Randy Dunlap
2020-06-23 13:35 ` Pavel Machek
2020-12-03 6:27 ` Dmitry Torokhov
2020-06-10 14:01 ` [PATCH v4 0/7] Support inhibiting input devices Rafael J. Wysocki
2020-06-10 13:52 ` Hans de Goede
2020-06-10 18:28 ` Dmitry Torokhov
2020-06-12 8:14 ` Hans de Goede
2020-06-12 8:17 ` Hans de Goede
2020-08-03 14:40 ` Andrzej Pietrasiewicz
2020-06-07 20:24 ` [PATCH v3 " Pavel Machek
2020-06-08 5:37 ` Dmitry Torokhov
2020-06-08 9:28 ` Andrzej Pietrasiewicz
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