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61d1961adf
It is easy to forget to call qcom_smem_state_put() after a qcom_smem_state_get(). Introduce a devm_qcom_smem_state_get() helper function that automates this so that qcom_smem_state_put() is automatically called when a device is removed. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20210618111556.53416-1-stephan@gerhold.net Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __QCOM_SMEM_STATE__
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#define __QCOM_SMEM_STATE__
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#include <linux/err.h>
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struct device_node;
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struct qcom_smem_state;
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struct qcom_smem_state_ops {
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int (*update_bits)(void *, u32, u32);
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};
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#ifdef CONFIG_QCOM_SMEM_STATE
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struct qcom_smem_state *qcom_smem_state_get(struct device *dev, const char *con_id, unsigned *bit);
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struct qcom_smem_state *devm_qcom_smem_state_get(struct device *dev, const char *con_id, unsigned *bit);
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void qcom_smem_state_put(struct qcom_smem_state *);
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int qcom_smem_state_update_bits(struct qcom_smem_state *state, u32 mask, u32 value);
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struct qcom_smem_state *qcom_smem_state_register(struct device_node *of_node, const struct qcom_smem_state_ops *ops, void *data);
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void qcom_smem_state_unregister(struct qcom_smem_state *state);
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#else
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static inline struct qcom_smem_state *qcom_smem_state_get(struct device *dev,
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const char *con_id, unsigned *bit)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline struct qcom_smem_state *devm_qcom_smem_state_get(struct device *dev,
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const char *con_id,
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unsigned *bit)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline void qcom_smem_state_put(struct qcom_smem_state *state)
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{
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}
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static inline int qcom_smem_state_update_bits(struct qcom_smem_state *state,
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u32 mask, u32 value)
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{
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return -EINVAL;
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}
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static inline struct qcom_smem_state *qcom_smem_state_register(struct device_node *of_node,
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const struct qcom_smem_state_ops *ops, void *data)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline void qcom_smem_state_unregister(struct qcom_smem_state *state)
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{
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}
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#endif
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#endif
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