coding guidelines: comply with MISRA Rule 11.8

modified parameter types to receive a const pointer when a
non-const pointer is not needed

Signed-off-by: Hess Nathan <nhess@baumer.com>

arch/arc/core/mpu/arc_core_mpu.c

@@ -34,7 +34,7 @@ int arch_mem_domain_max_partitions_get(void)
 /*
  * Validate the given buffer is user accessible or not
  */
-int arch_buffer_validate(void *addr, size_t size, int write)
+int arch_buffer_validate(const void *addr, size_t size, int write)
 {
 	return arc_core_mpu_buffer_validate(addr, size, write);
 }

arch/arc/core/mpu/arc_mpu_common_internal.h

@@ -207,7 +207,7 @@ int arc_core_mpu_get_max_domain_partition_regions(void)
 /**
  * @brief validate the given buffer is user accessible or not
  */
-int arc_core_mpu_buffer_validate(void *addr, size_t size, int write)
+int arc_core_mpu_buffer_validate(const void *addr, size_t size, int write)
 {
 	/*
 	 * For ARC MPU, smaller region number takes priority.

arch/arc/core/mpu/arc_mpu_v4_internal.h

@@ -779,7 +779,7 @@ int arc_core_mpu_get_max_domain_partition_regions(void)
 /**
  * @brief validate the given buffer is user accessible or not
  */
-int arc_core_mpu_buffer_validate(void *addr, size_t size, int write)
+int arc_core_mpu_buffer_validate(const void *addr, size_t size, int write)
 {
 	int r_index;
 	int key = arch_irq_lock();

arch/arm/core/mpu/arm_core_mpu.c

@@ -338,7 +338,7 @@ int arch_mem_domain_max_partitions_get(void)
 	return ARM_CORE_MPU_MAX_DOMAIN_PARTITIONS_GET(available_regions);
 }
 
-int arch_buffer_validate(void *addr, size_t size, int write)
+int arch_buffer_validate(const void *addr, size_t size, int write)
 {
 	return arm_core_mpu_buffer_validate(addr, size, write);
 }

arch/arm/core/mpu/arm_core_mpu_dev.h

@@ -261,7 +261,7 @@ int arm_core_mpu_get_max_available_dyn_regions(void);
  *       spans multiple enabled MPU regions (even if these regions all
  *       permit user access).
  */
-int arm_core_mpu_buffer_validate(void *addr, size_t size, int write);
+int arm_core_mpu_buffer_validate(const void *addr, size_t size, int write);
 
 #endif /* CONFIG_ARM_MPU */
 

arch/arm/core/mpu/arm_mpu.c

@@ -341,7 +341,7 @@ int arm_core_mpu_get_max_available_dyn_regions(void)
  *
  * Presumes the background mapping is NOT user accessible.
  */
-int arm_core_mpu_buffer_validate(void *addr, size_t size, int write)
+int arm_core_mpu_buffer_validate(const void *addr, size_t size, int write)
 {
 	return mpu_buffer_validate(addr, size, write);
 }

arch/arm/core/mpu/arm_mpu_v7_internal.h

@@ -169,7 +169,7 @@ static inline int is_user_accessible_region(uint32_t r_index, int write)
  * This internal function validates whether a given memory buffer
  * is user accessible or not.
  */
-static inline int mpu_buffer_validate(void *addr, size_t size, int write)
+static inline int mpu_buffer_validate(const void *addr, size_t size, int write)
 {
 	int32_t r_index;
 	int rc = -EPERM;

arch/arm/core/mpu/arm_mpu_v8_internal.h

@@ -408,7 +408,7 @@ static inline int is_user_accessible_region(uint32_t rnr, int write)
  * This internal function validates whether a given memory buffer
  * is user accessible or not.
  */
-static inline int mpu_buffer_validate(void *addr, size_t size, int write)
+static inline int mpu_buffer_validate(const void *addr, size_t size, int write)
 {
 	int32_t rnr;
 	int rc = -EPERM;
@@ -455,7 +455,7 @@ static inline int mpu_buffer_validate(void *addr, size_t size, int write)
  * in case the fast address range check fails.
  *
  */
-static inline int mpu_buffer_validate(void *addr, size_t size, int write)
+static inline int mpu_buffer_validate(const void *addr, size_t size, int write)
 {
 	uint32_t _addr = (uint32_t)addr;
 	uint32_t _size = (uint32_t)size;

arch/arm/core/mpu/nxp_mpu.c

@@ -602,7 +602,7 @@ static inline int is_user_accessible_region(uint32_t r_index, int write)
 /**
  * @brief validate the given buffer is user accessible or not
  */
-int arm_core_mpu_buffer_validate(void *addr, size_t size, int write)
+int arm_core_mpu_buffer_validate(const void *addr, size_t size, int write)
 {
 	uint8_t r_index;
 

arch/arm64/core/userspace.S

@@ -51,7 +51,7 @@ strlen_done:
 	ret
 
 /*
- * int arch_buffer_validate(void *addr, size_t size, int write)
+ * int arch_buffer_validate(const void *addr, size_t size, int write)
  */
 
 GTEXT(arch_buffer_validate)

arch/riscv/core/pmp.c

@@ -667,7 +667,7 @@ int arch_mem_domain_thread_remove(struct k_thread *thread)
 	((inner_start) >= (outer_start) && (inner_size) <= (outer_size) && \
 	 ((inner_start) - (outer_start)) <= ((outer_size) - (inner_size)))
 
-int arch_buffer_validate(void *addr, size_t size, int write)
+int arch_buffer_validate(const void *addr, size_t size, int write)
 {
 	uintptr_t start = (uintptr_t)addr;
 	int ret = -1;

arch/x86/core/x86_mmu.c

@@ -848,7 +848,7 @@ static inline pentry_t pte_finalize_value(pentry_t val, bool user_table,
 __pinned_func
 static inline pentry_t atomic_pte_get(const pentry_t *target)
 {
-	return (pentry_t)atomic_ptr_get((atomic_ptr_t *)target);
+	return (pentry_t)atomic_ptr_get((const atomic_ptr_t *)target);
 }
 
 __pinned_func
@@ -1301,7 +1301,7 @@ void arch_mem_unmap(void *addr, size_t size)
 {
 	int ret;
 
-	ret = range_map_unlocked((void *)addr, 0, size, 0, 0,
+	ret = range_map_unlocked(addr, 0, size, 0, 0,
 				 OPTION_FLUSH | OPTION_CLEAR);
 	__ASSERT_NO_MSG(ret == 0);
 	ARG_UNUSED(ret);
@@ -1387,7 +1387,7 @@ void z_x86_set_stack_guard(k_thread_stack_t *stack)
 __pinned_func
 static bool page_validate(pentry_t *ptables, uint8_t *addr, bool write)
 {
-	pentry_t *table = (pentry_t *)ptables;
+	pentry_t *table = ptables;
 
 	for (int level = 0; level < NUM_LEVELS; level++) {
 		pentry_t entry = get_entry(table, addr, level);
@@ -1432,7 +1432,7 @@ static inline void bcb_fence(void)
 }
 
 __pinned_func
-int arch_buffer_validate(void *addr, size_t size, int write)
+int arch_buffer_validate(const void *addr, size_t size, int write)
 {
 	pentry_t *ptables = z_x86_thread_page_tables_get(_current);
 	uint8_t *virt;

arch/xtensa/core/mpu.c

@@ -969,7 +969,7 @@ out:
 	return ret;
 }
 
-int arch_buffer_validate(void *addr, size_t size, int write)
+int arch_buffer_validate(const void *addr, size_t size, int write)
 {
 	uintptr_t aligned_addr;
 	size_t aligned_size, addr_offset;

arch/xtensa/core/ptables.c

@@ -1044,7 +1044,7 @@ static bool page_validate(uint32_t *ptables, uint32_t page, uint8_t ring, bool w
 	return true;
 }
 
-int arch_buffer_validate(void *addr, size_t size, int write)
+int arch_buffer_validate(const void *addr, size_t size, int write)
 {
 	int ret = 0;
 	uint8_t *virt;

include/zephyr/arch/arc/v2/mpu/arc_core_mpu.h

@@ -88,7 +88,7 @@ void arc_core_mpu_remove_mem_domain(struct k_mem_domain *mem_domain);
 void arc_core_mpu_remove_mem_partition(struct k_mem_domain *domain,
 			uint32_t partition_id);
 int arc_core_mpu_get_max_domain_partition_regions(void);
-int arc_core_mpu_buffer_validate(void *addr, size_t size, int write);
+int arc_core_mpu_buffer_validate(const void *addr, size_t size, int write);
 
 #endif
 

include/zephyr/arch/arch_interface.h

@@ -783,7 +783,7 @@ int arch_mem_domain_partition_add(struct k_mem_domain *domain,
  *
  * @return nonzero if the permissions don't match.
  */
-int arch_buffer_validate(void *addr, size_t size, int write);
+int arch_buffer_validate(const void *addr, size_t size, int write);
 
 /**
  * Get the optimal virtual region alignment to optimize the MMU table layout