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[1/3] build: Add compat code for pm_runtime_get_if_in_use

Message ID 1500811924-4559-2-git-send-email-jasmin@anw.at (mailing list archive)
State New, archived
Headers show

Commit Message

Jasmin J. July 23, 2017, 12:12 p.m. UTC 
From: Jasmin Jessich <jasmin@anw.at>

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
---
 v4l/compat.h                      | 15 +++++++++++++++
 v4l/scripts/make_config_compat.pl |  1 +
 2 files changed, 16 insertions(+)
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Patch

diff --git a/v4l/compat.h b/v4l/compat.h
index e565292..b5b0846 100644
--- a/v4l/compat.h
+++ b/v4l/compat.h
@@ -2084,4 +2084,19 @@  static inline void *skb_put_data(struct sk_buff *skb, const void *data,
 }
 #endif
 
+#ifdef NEED_PM_RUNTIME_GET
+static inline int pm_runtime_get_if_in_use(struct device *dev)
+{
+	unsigned long flags;
+	int retval;
+
+	spin_lock_irqsave(&dev->power.lock, flags);
+	retval = dev->power.disable_depth > 0 ? -EINVAL :
+		dev->power.runtime_status == RPM_ACTIVE
+			&& atomic_inc_not_zero(&dev->power.usage_count);
+	spin_unlock_irqrestore(&dev->power.lock, flags);
+	return retval;
+}
+#endif
+
 #endif /*  _COMPAT_H */
diff --git a/v4l/scripts/make_config_compat.pl b/v4l/scripts/make_config_compat.pl
index 5ac59ab..be278aa 100644
--- a/v4l/scripts/make_config_compat.pl
+++ b/v4l/scripts/make_config_compat.pl
@@ -700,6 +700,7 @@  sub check_other_dependencies()
 	check_files_for_func("to_of_node", "NEED_TO_OF_NODE", "include/linux/of.h");
 	check_files_for_func("is_of_node", "NEED_IS_OF_NODE", "include/linux/of.h");
 	check_files_for_func("skb_put_data", "NEED_SKB_PUT_DATA", "include/linux/skbuff.h");
+	check_files_for_func("pm_runtime_get_if_in_use", "NEED_PM_RUNTIME_GET", "include/linux/pm_runtime.h");
 
 	# For tests for uapi-dependent logic
 	check_files_for_func_uapi("usb_endpoint_maxp", "NEED_USB_ENDPOINT_MAXP", "usb/ch9.h");