linux-kernel - [PATCH v2 1/9] PM / core: add helper to return suspend status of a device

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Date:   Sat, 22 Dec 2018 21:26:15 +0100
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     linux-i2c@...r.kernel.org
Cc:     linux-renesas-soc@...r.kernel.org, linux-pm@...r.kernel.org,
        Hans de Goede <hdegoede@...hat.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Wolfram Sang <wsa+renesas@...g-engineering.com>
Subject: [PATCH v2 1/9] PM / core: add helper to return suspend status of a device

I2C core would like this to reject transfers on an already suspended
adapter.

Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---
 include/linux/device.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/device.h b/include/linux/device.h
index 1b25c7a43f4c..e63d3e06989f 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -1138,6 +1138,11 @@ static inline int device_is_registered(struct device *dev)
 	return dev->kobj.state_in_sysfs;
 }
 
+static inline bool device_is_suspended(struct device *dev)
+{
+	return dev->power.is_suspended;
+}
+
 static inline void device_enable_async_suspend(struct device *dev)
 {
 	if (!dev->power.is_prepared)
-- 
2.19.1