cregit-Linux how code gets into the kernel

Release 4.12 include/linux/soc/qcom/smem_state.h

#ifndef __QCOM_SMEM_STATE__

#define __QCOM_SMEM_STATE__

#include <linux/err.h>

struct device_node;
struct qcom_smem_state;


struct qcom_smem_state_ops {
	
int (*update_bits)(void *, u32, u32);
};

#ifdef CONFIG_QCOM_SMEM_STATE

struct qcom_smem_state *qcom_smem_state_get(struct device *dev, const char *con_id, unsigned *bit);
void qcom_smem_state_put(struct qcom_smem_state *);

int qcom_smem_state_update_bits(struct qcom_smem_state *state, u32 mask, u32 value);

struct qcom_smem_state *qcom_smem_state_register(struct device_node *of_node, const struct qcom_smem_state_ops *ops, void *data);
void qcom_smem_state_unregister(struct qcom_smem_state *state);

#else


static inline struct qcom_smem_state *qcom_smem_state_get(struct device *dev, const char *con_id, unsigned *bit) { return ERR_PTR(-EINVAL); }

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static inline void qcom_smem_state_put(struct qcom_smem_state *state) { }

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static inline int qcom_smem_state_update_bits(struct qcom_smem_state *state, u32 mask, u32 value) { return -EINVAL; }

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static inline struct qcom_smem_state *qcom_smem_state_register(struct device_node *of_node, const struct qcom_smem_state_ops *ops, void *data) { return ERR_PTR(-EINVAL); }

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static inline void qcom_smem_state_unregister(struct qcom_smem_state *state) { }

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#endif #endif

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