crypto: caam - constify pointer to descriptor buffer

The pointer to the descriptor buffer is not touched,
it always points to start of the descriptor buffer.
Thus, make it const.

Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/caam/desc_constr.h

@@ -33,38 +33,39 @@
 
 extern bool caam_little_end;
 
-static inline int desc_len(u32 *desc)
+static inline int desc_len(u32 * const desc)
 {
 	return caam32_to_cpu(*desc) & HDR_DESCLEN_MASK;
 }
 
-static inline int desc_bytes(void *desc)
+static inline int desc_bytes(void * const desc)
 {
 	return desc_len(desc) * CAAM_CMD_SZ;
 }
 
-static inline u32 *desc_end(u32 *desc)
+static inline u32 *desc_end(u32 * const desc)
 {
 	return desc + desc_len(desc);
 }
 
-static inline void *sh_desc_pdb(u32 *desc)
+static inline void *sh_desc_pdb(u32 * const desc)
 {
 	return desc + 1;
 }
 
-static inline void init_desc(u32 *desc, u32 options)
+static inline void init_desc(u32 * const desc, u32 options)
 {
 	*desc = cpu_to_caam32((options | HDR_ONE) + 1);
 }
 
-static inline void init_sh_desc(u32 *desc, u32 options)
+static inline void init_sh_desc(u32 * const desc, u32 options)
 {
 	PRINT_POS;
 	init_desc(desc, CMD_SHARED_DESC_HDR | options);
 }
 
-static inline void init_sh_desc_pdb(u32 *desc, u32 options, size_t pdb_bytes)
+static inline void init_sh_desc_pdb(u32 * const desc, u32 options,
+				    size_t pdb_bytes)
 {
 	u32 pdb_len = (pdb_bytes + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ;
 
@@ -72,19 +73,20 @@ static inline void init_sh_desc_pdb(u32 *desc, u32 options, size_t pdb_bytes)
 		     options);
 }
 
-static inline void init_job_desc(u32 *desc, u32 options)
+static inline void init_job_desc(u32 * const desc, u32 options)
 {
 	init_desc(desc, CMD_DESC_HDR | options);
 }
 
-static inline void init_job_desc_pdb(u32 *desc, u32 options, size_t pdb_bytes)
+static inline void init_job_desc_pdb(u32 * const desc, u32 options,
+				     size_t pdb_bytes)
 {
 	u32 pdb_len = (pdb_bytes + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ;
 
 	init_job_desc(desc, (((pdb_len + 1) << HDR_START_IDX_SHIFT)) | options);
 }
 
-static inline void append_ptr(u32 *desc, dma_addr_t ptr)
+static inline void append_ptr(u32 * const desc, dma_addr_t ptr)
 {
 	dma_addr_t *offset = (dma_addr_t *)desc_end(desc);
 
@@ -94,8 +96,8 @@ static inline void append_ptr(u32 *desc, dma_addr_t ptr)
 				CAAM_PTR_SZ / CAAM_CMD_SZ);
 }
 
-static inline void init_job_desc_shared(u32 *desc, dma_addr_t ptr, int len,
-					u32 options)
+static inline void init_job_desc_shared(u32 * const desc, dma_addr_t ptr,
+					int len, u32 options)
 {
 	PRINT_POS;
 	init_job_desc(desc, HDR_SHARED | options |
@@ -103,7 +105,7 @@ static inline void init_job_desc_shared(u32 *desc, dma_addr_t ptr, int len,
 	append_ptr(desc, ptr);
 }
 
-static inline void append_data(u32 *desc, void *data, int len)
+static inline void append_data(u32 * const desc, void *data, int len)
 {
 	u32 *offset = desc_end(desc);
 
@@ -114,7 +116,7 @@ static inline void append_data(u32 *desc, void *data, int len)
 				(len + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ);
 }
 
-static inline void append_cmd(u32 *desc, u32 command)
+static inline void append_cmd(u32 * const desc, u32 command)
 {
 	u32 *cmd = desc_end(desc);
 
@@ -125,7 +127,7 @@ static inline void append_cmd(u32 *desc, u32 command)
 
 #define append_u32 append_cmd
 
-static inline void append_u64(u32 *desc, u64 data)
+static inline void append_u64(u32 * const desc, u64 data)
 {
 	u32 *offset = desc_end(desc);
 
@@ -142,14 +144,14 @@ static inline void append_u64(u32 *desc, u64 data)
 }
 
 /* Write command without affecting header, and return pointer to next word */
-static inline u32 *write_cmd(u32 *desc, u32 command)
+static inline u32 *write_cmd(u32 * const desc, u32 command)
 {
 	*desc = cpu_to_caam32(command);
 
 	return desc + 1;
 }
 
-static inline void append_cmd_ptr(u32 *desc, dma_addr_t ptr, int len,
+static inline void append_cmd_ptr(u32 * const desc, dma_addr_t ptr, int len,
 				  u32 command)
 {
 	append_cmd(desc, command | len);
@@ -157,7 +159,7 @@ static inline void append_cmd_ptr(u32 *desc, dma_addr_t ptr, int len,
 }
 
 /* Write length after pointer, rather than inside command */
-static inline void append_cmd_ptr_extlen(u32 *desc, dma_addr_t ptr,
+static inline void append_cmd_ptr_extlen(u32 * const desc, dma_addr_t ptr,
 					 unsigned int len, u32 command)
 {
 	append_cmd(desc, command);
@@ -166,7 +168,7 @@ static inline void append_cmd_ptr_extlen(u32 *desc, dma_addr_t ptr,
 	append_cmd(desc, len);
 }
 
-static inline void append_cmd_data(u32 *desc, void *data, int len,
+static inline void append_cmd_data(u32 * const desc, void *data, int len,
 				   u32 command)
 {
 	append_cmd(desc, command | IMMEDIATE | len);
@@ -174,7 +176,7 @@ static inline void append_cmd_data(u32 *desc, void *data, int len,
 }
 
 #define APPEND_CMD_RET(cmd, op) \
-static inline u32 *append_##cmd(u32 *desc, u32 options) \
+static inline u32 *append_##cmd(u32 * const desc, u32 options) \
 { \
 	u32 *cmd = desc_end(desc); \
 	PRINT_POS; \
@@ -184,13 +186,13 @@ static inline u32 *append_##cmd(u32 *desc, u32 options) \
 APPEND_CMD_RET(jump, JUMP)
 APPEND_CMD_RET(move, MOVE)
 
-static inline void set_jump_tgt_here(u32 *desc, u32 *jump_cmd)
+static inline void set_jump_tgt_here(u32 * const desc, u32 *jump_cmd)
 {
 	*jump_cmd = cpu_to_caam32(caam32_to_cpu(*jump_cmd) |
 				  (desc_len(desc) - (jump_cmd - desc)));
 }
 
-static inline void set_move_tgt_here(u32 *desc, u32 *move_cmd)
+static inline void set_move_tgt_here(u32 * const desc, u32 *move_cmd)
 {
 	u32 val = caam32_to_cpu(*move_cmd);
 
@@ -200,7 +202,7 @@ static inline void set_move_tgt_here(u32 *desc, u32 *move_cmd)
 }
 
 #define APPEND_CMD(cmd, op) \
-static inline void append_##cmd(u32 *desc, u32 options) \
+static inline void append_##cmd(u32 * const desc, u32 options) \
 { \
 	PRINT_POS; \
 	append_cmd(desc, CMD_##op | options); \
@@ -208,7 +210,8 @@ static inline void append_##cmd(u32 *desc, u32 options) \
 APPEND_CMD(operation, OPERATION)
 
 #define APPEND_CMD_LEN(cmd, op) \
-static inline void append_##cmd(u32 *desc, unsigned int len, u32 options) \
+static inline void append_##cmd(u32 * const desc, unsigned int len, \
+				u32 options) \
 { \
 	PRINT_POS; \
 	append_cmd(desc, CMD_##op | len | options); \
@@ -220,8 +223,8 @@ APPEND_CMD_LEN(seq_fifo_load, SEQ_FIFO_LOAD)
 APPEND_CMD_LEN(seq_fifo_store, SEQ_FIFO_STORE)
 
 #define APPEND_CMD_PTR(cmd, op) \
-static inline void append_##cmd(u32 *desc, dma_addr_t ptr, unsigned int len, \
-				u32 options) \
+static inline void append_##cmd(u32 * const desc, dma_addr_t ptr, \
+				unsigned int len, u32 options) \
 { \
 	PRINT_POS; \
 	append_cmd_ptr(desc, ptr, len, CMD_##op | options); \
@@ -231,8 +234,8 @@ APPEND_CMD_PTR(load, LOAD)
 APPEND_CMD_PTR(fifo_load, FIFO_LOAD)
 APPEND_CMD_PTR(fifo_store, FIFO_STORE)
 
-static inline void append_store(u32 *desc, dma_addr_t ptr, unsigned int len,
-				u32 options)
+static inline void append_store(u32 * const desc, dma_addr_t ptr,
+				unsigned int len, u32 options)
 {
 	u32 cmd_src;
 
@@ -249,7 +252,8 @@ static inline void append_store(u32 *desc, dma_addr_t ptr, unsigned int len,
 }
 
 #define APPEND_SEQ_PTR_INTLEN(cmd, op) \
-static inline void append_seq_##cmd##_ptr_intlen(u32 *desc, dma_addr_t ptr, \
+static inline void append_seq_##cmd##_ptr_intlen(u32 * const desc, \
+						 dma_addr_t ptr, \
 						 unsigned int len, \
 						 u32 options) \
 { \
@@ -263,7 +267,7 @@ APPEND_SEQ_PTR_INTLEN(in, IN)
 APPEND_SEQ_PTR_INTLEN(out, OUT)
 
 #define APPEND_CMD_PTR_TO_IMM(cmd, op) \
-static inline void append_##cmd##_as_imm(u32 *desc, void *data, \
+static inline void append_##cmd##_as_imm(u32 * const desc, void *data, \
 					 unsigned int len, u32 options) \
 { \
 	PRINT_POS; \
@@ -273,7 +277,7 @@ APPEND_CMD_PTR_TO_IMM(load, LOAD);
 APPEND_CMD_PTR_TO_IMM(fifo_load, FIFO_LOAD);
 
 #define APPEND_CMD_PTR_EXTLEN(cmd, op) \
-static inline void append_##cmd##_extlen(u32 *desc, dma_addr_t ptr, \
+static inline void append_##cmd##_extlen(u32 * const desc, dma_addr_t ptr, \
 					 unsigned int len, u32 options) \
 { \
 	PRINT_POS; \
@@ -287,7 +291,7 @@ APPEND_CMD_PTR_EXTLEN(seq_out_ptr, SEQ_OUT_PTR)
  * the size of its type
  */
 #define APPEND_CMD_PTR_LEN(cmd, op, type) \
-static inline void append_##cmd(u32 *desc, dma_addr_t ptr, \
+static inline void append_##cmd(u32 * const desc, dma_addr_t ptr, \
 				type len, u32 options) \
 { \
 	PRINT_POS; \
@@ -304,7 +308,7 @@ APPEND_CMD_PTR_LEN(seq_out_ptr, SEQ_OUT_PTR, u32)
  * from length of immediate data provided, e.g., split keys
  */
 #define APPEND_CMD_PTR_TO_IMM2(cmd, op) \
-static inline void append_##cmd##_as_imm(u32 *desc, void *data, \
+static inline void append_##cmd##_as_imm(u32 * const desc, void *data, \
 					 unsigned int data_len, \
 					 unsigned int len, u32 options) \
 { \
@@ -315,7 +319,7 @@ static inline void append_##cmd##_as_imm(u32 *desc, void *data, \
 APPEND_CMD_PTR_TO_IMM2(key, KEY);
 
 #define APPEND_CMD_RAW_IMM(cmd, op, type) \
-static inline void append_##cmd##_imm_##type(u32 *desc, type immediate, \
+static inline void append_##cmd##_imm_##type(u32 * const desc, type immediate, \
 					     u32 options) \
 { \
 	PRINT_POS; \