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hc
2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/include/linux/rpmsg.h
....@@ -145,6 +145,8 @@
145145 int rpmsg_get_signals(struct rpmsg_endpoint *ept);
146146 int rpmsg_set_signals(struct rpmsg_endpoint *ept, u32 set, u32 clear);
147147 
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+ssize_t rpmsg_get_mtu(struct rpmsg_endpoint *ept);
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+
148150 #else
149151 
150152 static inline int register_rpmsg_device(struct rpmsg_device *dev)
....@@ -269,6 +271,14 @@
269271 	return -ENXIO;
270272 }
271273 
274
+static inline ssize_t rpmsg_get_mtu(struct rpmsg_endpoint *ept)
275
+{
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+	/* This shouldn't be possible */
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+	WARN_ON(1);
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+
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+	return -ENXIO;
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+}
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+
272282 #endif /* IS_ENABLED(CONFIG_RPMSG) */
273283 
274284 /* use a macro to avoid include chaining to get THIS_MODULE */