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    Subject[PATCH v5 5/9] coresight: use const for device_node structures
    Date
    Almost low level functions from open firmware have used const to
    qualify device_node structures, so add const for device_node
    parameters in of_coresight related functions.

    Signed-off-by: Leo Yan <leo.yan@linaro.org>
    ---
    drivers/hwtracing/coresight/of_coresight.c | 6 +++---
    include/linux/coresight.h | 8 ++++----
    2 files changed, 7 insertions(+), 7 deletions(-)

    diff --git a/drivers/hwtracing/coresight/of_coresight.c b/drivers/hwtracing/coresight/of_coresight.c
    index 78d2399..46eec0f 100644
    --- a/drivers/hwtracing/coresight/of_coresight.c
    +++ b/drivers/hwtracing/coresight/of_coresight.c
    @@ -52,7 +52,7 @@ of_coresight_get_endpoint_device(struct device_node *endpoint)
    endpoint, of_dev_node_match);
    }

    -static void of_coresight_get_ports(struct device_node *node,
    +static void of_coresight_get_ports(const struct device_node *node,
    int *nr_inport, int *nr_outport)
    {
    struct device_node *ep = NULL;
    @@ -101,7 +101,7 @@ static int of_coresight_alloc_memory(struct device *dev,
    return 0;
    }

    -int of_coresight_get_cpu(struct device_node *node)
    +int of_coresight_get_cpu(const struct device_node *node)
    {
    int cpu;
    bool found;
    @@ -128,7 +128,7 @@ int of_coresight_get_cpu(struct device_node *node)
    EXPORT_SYMBOL_GPL(of_coresight_get_cpu);

    struct coresight_platform_data *of_get_coresight_platform_data(
    - struct device *dev, struct device_node *node)
    + struct device *dev, const struct device_node *node)
    {
    int i = 0, ret = 0;
    struct coresight_platform_data *pdata;
    diff --git a/include/linux/coresight.h b/include/linux/coresight.h
    index bf96678..4915254 100644
    --- a/include/linux/coresight.h
    +++ b/include/linux/coresight.h
    @@ -263,13 +263,13 @@ static inline int coresight_timeout(void __iomem *addr, u32 offset,
    #endif

    #ifdef CONFIG_OF
    -extern int of_coresight_get_cpu(struct device_node *node);
    +extern int of_coresight_get_cpu(const struct device_node *node);
    extern struct coresight_platform_data *of_get_coresight_platform_data(
    - struct device *dev, struct device_node *node);
    + struct device *dev, const struct device_node *node);
    #else
    -static inline int of_coresight_get_cpu(struct device_node *node) { return 0; }
    +static inline int of_coresight_get_cpu(const struct device_node *node) { return 0; }
    static inline struct coresight_platform_data *of_get_coresight_platform_data(
    - struct device *dev, struct device_node *node) { return NULL; }
    + struct device *dev, const struct device_node *node) { return NULL; }
    #endif

    #ifdef CONFIG_PID_NS
    --
    2.7.4
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