clk: mux: Declare u32 *table parameter as const

The elements of the table are never modified in clk-mux.c. To make this
clear to clock drivers, declare the parameter as const u32 *table.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20220205103613.1216218-4-j.neuschaefer@gmx.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c
index 20582aae7a35f2a0bd6fed0316fb85a9f3b18476..214045f6e9895719c3490b14cd158fae74b2c387 100644 (file)
--- a/drivers/clk/clk-mux.c
+++ b/drivers/clk/clk-mux.c
@@ -40,7 +40,7 @@ static inline void clk_mux_writel(struct clk_mux *mux, u32 val)
                writel(val, mux->reg);
 }
 
-int clk_mux_val_to_index(struct clk_hw *hw, u32 *table, unsigned int flags,
+int clk_mux_val_to_index(struct clk_hw *hw, const u32 *table, unsigned int flags,
                         unsigned int val)
 {
        int num_parents = clk_hw_get_num_parents(hw);
@@ -67,7 +67,7 @@ int clk_mux_val_to_index(struct clk_hw *hw, u32 *table, unsigned int flags,
 }
 EXPORT_SYMBOL_GPL(clk_mux_val_to_index);
 
-unsigned int clk_mux_index_to_val(u32 *table, unsigned int flags, u8 index)
+unsigned int clk_mux_index_to_val(const u32 *table, unsigned int flags, u8 index)
 {
        unsigned int val = index;
 
@@ -152,7 +152,7 @@ struct clk_hw *__clk_hw_register_mux(struct device *dev, struct device_node *np,
                const struct clk_hw **parent_hws,
                const struct clk_parent_data *parent_data,
                unsigned long flags, void __iomem *reg, u8 shift, u32 mask,
-               u8 clk_mux_flags, u32 *table, spinlock_t *lock)
+               u8 clk_mux_flags, const u32 *table, spinlock_t *lock)
 {
        struct clk_mux *mux;
        struct clk_hw *hw;
@@ -218,7 +218,7 @@ struct clk_hw *__devm_clk_hw_register_mux(struct device *dev, struct device_node
                const struct clk_hw **parent_hws,
                const struct clk_parent_data *parent_data,
                unsigned long flags, void __iomem *reg, u8 shift, u32 mask,
-               u8 clk_mux_flags, u32 *table, spinlock_t *lock)
+               u8 clk_mux_flags, const u32 *table, spinlock_t *lock)
 {
        struct clk_hw **ptr, *hw;
 
@@ -244,7 +244,7 @@ EXPORT_SYMBOL_GPL(__devm_clk_hw_register_mux);
 struct clk *clk_register_mux_table(struct device *dev, const char *name,
                const char * const *parent_names, u8 num_parents,
                unsigned long flags, void __iomem *reg, u8 shift, u32 mask,
-               u8 clk_mux_flags, u32 *table, spinlock_t *lock)
+               u8 clk_mux_flags, const u32 *table, spinlock_t *lock)
 {
        struct clk_hw *hw;
 

diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 2faa6f7aa8a87a222c60d5e1d48c4827b7e3ed94..27be575288747619cd2a95a8813d9f73b8a90342 100644 (file)
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -888,7 +888,7 @@ void clk_hw_unregister_divider(struct clk_hw *hw);
 struct clk_mux {
        struct clk_hw   hw;
        void __iomem    *reg;
-       u32             *table;
+       const u32       *table;
        u32             mask;
        u8              shift;
        u8              flags;
@@ -913,18 +913,18 @@ struct clk_hw *__clk_hw_register_mux(struct device *dev, struct device_node *np,
                const struct clk_hw **parent_hws,
                const struct clk_parent_data *parent_data,
                unsigned long flags, void __iomem *reg, u8 shift, u32 mask,
-               u8 clk_mux_flags, u32 *table, spinlock_t *lock);
+               u8 clk_mux_flags, const u32 *table, spinlock_t *lock);
 struct clk_hw *__devm_clk_hw_register_mux(struct device *dev, struct device_node *np,
                const char *name, u8 num_parents,
                const char * const *parent_names,
                const struct clk_hw **parent_hws,
                const struct clk_parent_data *parent_data,
                unsigned long flags, void __iomem *reg, u8 shift, u32 mask,
-               u8 clk_mux_flags, u32 *table, spinlock_t *lock);
+               u8 clk_mux_flags, const u32 *table, spinlock_t *lock);
 struct clk *clk_register_mux_table(struct device *dev, const char *name,
                const char * const *parent_names, u8 num_parents,
                unsigned long flags, void __iomem *reg, u8 shift, u32 mask,
-               u8 clk_mux_flags, u32 *table, spinlock_t *lock);
+               u8 clk_mux_flags, const u32 *table, spinlock_t *lock);
 
 #define clk_register_mux(dev, name, parent_names, num_parents, flags, reg,    \
                         shift, width, clk_mux_flags, lock)                   \
@@ -962,9 +962,9 @@ struct clk *clk_register_mux_table(struct device *dev, const char *name,
                              (shift), BIT((width)) - 1, (clk_mux_flags),     \
                              NULL, (lock))
 
-int clk_mux_val_to_index(struct clk_hw *hw, u32 *table, unsigned int flags,
+int clk_mux_val_to_index(struct clk_hw *hw, const u32 *table, unsigned int flags,
                         unsigned int val);
-unsigned int clk_mux_index_to_val(u32 *table, unsigned int flags, u8 index);
+unsigned int clk_mux_index_to_val(const u32 *table, unsigned int flags, u8 index);
 
 void clk_unregister_mux(struct clk *clk);
 void clk_hw_unregister_mux(struct clk_hw *hw);