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From: Saravana Kannan <saravanak@google.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>
Cc: Saravana Kannan <saravanak@google.com>,
	kernel-team@android.com, linux-kernel@vger.kernel.org
Subject: [PATCH v2 2/3] driver core: Add dev_has_sync_state()
Date: Fri, 21 Feb 2020 00:05:09 -0800	[thread overview]
Message-ID: <20200221080510.197337-3-saravanak@google.com> (raw)
In-Reply-To: <20200221080510.197337-1-saravanak@google.com>

Add an API to check if a device has sync_state support in its driver or
bus.

Signed-off-by: Saravana Kannan <saravanak@google.com>
---
 include/linux/device.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/linux/device.h b/include/linux/device.h
index 0cd7c647c16c..fa04dfd22bbc 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -798,6 +798,17 @@ static inline struct device_node *dev_of_node(struct device *dev)
 	return dev->of_node;
 }
 
+static inline bool dev_has_sync_state(struct device *dev)
+{
+	if (!dev)
+		return false;
+	if (dev->driver && dev->driver->sync_state)
+		return true;
+	if (dev->bus && dev->bus->sync_state)
+		return true;
+	return false;
+}
+
 /*
  * High level routines for use by the bus drivers
  */
-- 
2.25.0.265.gbab2e86ba0-goog


  parent reply	other threads:[~2020-02-21  8:05 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-21  8:05 [PATCH v2 0/3] driver core: sync state fixups Saravana Kannan
2020-02-21  8:05 ` [PATCH v2 1/3] driver core: Call sync_state() even if supplier has no consumers Saravana Kannan
2020-02-21  9:25   ` Greg Kroah-Hartman
2020-02-21  9:48     ` Saravana Kannan
2020-02-21 10:32       ` Greg Kroah-Hartman
2020-02-21 16:00         ` Saravana Kannan
2020-02-21  8:05 ` Saravana Kannan [this message]
2020-02-21  8:05 ` [PATCH v2 3/3] driver core: Skip unnecessary work when device doesn't have sync_state() Saravana Kannan
2020-03-24 20:03   ` Davide Caratti
2020-03-24 20:14     ` Saravana Kannan
2020-03-25  7:44     ` Greg Kroah-Hartman
2020-03-25  9:11       ` Davide Caratti
2020-03-25  9:17         ` Greg Kroah-Hartman
2020-03-04 12:49 ` [PATCH v2 0/3] driver core: sync state fixups Greg Kroah-Hartman

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