diff --git a/src/server/gdb_server.c b/src/server/gdb_server.c
index 8360ee1b9..41a47bf3c 100644
--- a/src/server/gdb_server.c
+++ b/src/server/gdb_server.c
@@ -3012,7 +3012,8 @@ static int gdb_query_packet(struct connection *connection,
 	return ERROR_OK;
 }
 
-static bool gdb_handle_vcont_packet(struct connection *connection, const char *packet, int packet_size)
+static bool gdb_handle_vcont_packet(struct connection *connection, const char *packet,
+	__attribute__((unused)) int packet_size)
 {
 	struct gdb_connection *gdb_connection = connection->priv;
 	struct target *target = get_available_target_from_connection(connection);
@@ -3031,7 +3032,6 @@ static bool gdb_handle_vcont_packet(struct connection *connection, const char *p
 
 	if (parse[0] == ';') {
 		++parse;
-		--packet_size;
 	}
 
 	/* simple case, a continue packet */
@@ -3070,14 +3070,11 @@ static bool gdb_handle_vcont_packet(struct connection *connection, const char *p
 		int current_pc = 1;
 		int64_t thread_id;
 		parse++;
-		packet_size--;
 		if (parse[0] == ':') {
 			char *endp;
 			parse++;
-			packet_size--;
 			thread_id = strtoll(parse, &endp, 16);
 			if (endp) {
-				packet_size -= endp - parse;
 				parse = endp;
 			}
 		} else {
@@ -3115,7 +3112,6 @@ static bool gdb_handle_vcont_packet(struct connection *connection, const char *p
 
 		if (parse[0] == ';') {
 			++parse;
-			--packet_size;
 
 			if (parse[0] == 'c') {
 				parse += 1;
diff --git a/src/target/arm7_9_common.c b/src/target/arm7_9_common.c
index 8f87d9cda..0632290d9 100644
--- a/src/target/arm7_9_common.c
+++ b/src/target/arm7_9_common.c
@@ -1553,7 +1553,6 @@ static int arm7_9_restore_context(struct target *target)
 
 		if (dirty) {
 			uint32_t mask = 0x0;
-			int num_regs = 0;
 			uint32_t regs[16];
 
 			if (mode_change) {
@@ -1576,7 +1575,6 @@ static int arm7_9_restore_context(struct target *target)
 				if (reg->dirty) {
 					regs[j] = buf_get_u32(reg->value, 0, 32);
 					mask |= 1 << j;
-					num_regs++;
 					reg->dirty = false;
 					reg->valid = true;
 					LOG_DEBUG("writing register %i mode %s "
diff --git a/src/target/riscv/batch.c b/src/target/riscv/batch.c
index bf68c05f9..e87ba49d1 100644
--- a/src/target/riscv/batch.c
+++ b/src/target/riscv/batch.c
@@ -127,7 +127,7 @@ int riscv_batch_run(struct riscv_batch *batch)
 	return ERROR_OK;
 }
 
-void riscv_batch_add_dmi_write(struct riscv_batch *batch, unsigned address, uint64_t data,
+void riscv_batch_add_dmi_write(struct riscv_batch *batch, unsigned int address, uint64_t data,
 	bool read_back)
 {
 	assert(batch->used_scans < batch->allocated_scans);
@@ -194,7 +194,7 @@ void riscv_batch_add_nop(struct riscv_batch *batch)
 	batch->used_scans++;
 }
 
-void dump_field(int idle, const struct scan_field *field)
+static void dump_field(int idle, const struct scan_field *field)
 {
 	static const char * const op_string[] = {"-", "r", "w", "?"};
 	static const char * const status_string[] = {"+", "?", "F", "b"};
diff --git a/src/target/riscv/batch.h b/src/target/riscv/batch.h
index 5151e61bf..ac1a8f574 100644
--- a/src/target/riscv/batch.h
+++ b/src/target/riscv/batch.h
@@ -59,7 +59,7 @@ bool riscv_batch_full(struct riscv_batch *batch);
 int riscv_batch_run(struct riscv_batch *batch);
 
 /* Adds a DMI write to this batch. */
-void riscv_batch_add_dmi_write(struct riscv_batch *batch, unsigned address, uint64_t data,
+void riscv_batch_add_dmi_write(struct riscv_batch *batch, unsigned int address, uint64_t data,
 	bool read_back);
 
 /* DMI reads must be handled in two parts: the first one schedules a read and
diff --git a/src/target/riscv/riscv-013.c b/src/target/riscv/riscv-013.c
index a7b613e76..c614ec391 100644
--- a/src/target/riscv/riscv-013.c
+++ b/src/target/riscv/riscv-013.c
@@ -47,9 +47,9 @@ static int riscv013_step_current_hart(struct target *target);
 static int riscv013_on_step(struct target *target);
 static int riscv013_resume_prep(struct target *target);
 static enum riscv_halt_reason riscv013_halt_reason(struct target *target);
-static int riscv013_write_debug_buffer(struct target *target, unsigned index,
+static int riscv013_write_debug_buffer(struct target *target, unsigned int index,
 		riscv_insn_t d);
-static riscv_insn_t riscv013_read_debug_buffer(struct target *target, unsigned
+static riscv_insn_t riscv013_read_debug_buffer(struct target *target, unsigned int
 		index);
 static int riscv013_invalidate_cached_debug_buffer(struct target *target);
 static int riscv013_execute_debug_buffer(struct target *target);
@@ -1005,7 +1005,7 @@ static uint32_t abstract_memory_size(unsigned width)
  * Creates a memory access abstract command.
  */
 static uint32_t access_memory_command(struct target *target, bool virtual,
-		unsigned width, bool postincrement, bool is_write)
+		unsigned int width, bool postincrement, bool is_write)
 {
 	uint32_t command = set_field(0, AC_ACCESS_MEMORY_CMDTYPE, 2);
 	command = set_field(command, AC_ACCESS_MEMORY_AAMVIRTUAL, virtual);
@@ -1855,8 +1855,8 @@ static int examine(struct target *target)
 	if (!halted) {
 		r->prepped = true;
 		if (riscv013_halt_go(target) != ERROR_OK) {
-			LOG_TARGET_ERROR(target, "Fatal: Hart %d failed to halt during examine()",
-					info->index);
+			LOG_TARGET_ERROR(target, "Fatal: Hart %d failed to halt during %s",
+					info->index, __func__);
 			return ERROR_FAIL;
 		}
 		target->state = TARGET_HALTED;
@@ -4104,35 +4104,35 @@ static int write_memory_bus_v1(struct target *target, target_addr_t address,
 
 			uint32_t sbvalue[4] = { 0 };
 			if (size > 12) {
-				sbvalue[3] = ((uint32_t) p[12]) |
-						(((uint32_t) p[13]) << 8) |
-						(((uint32_t) p[14]) << 16) |
-						(((uint32_t) p[15]) << 24);
+				sbvalue[3] = ((uint32_t)p[12]) |
+						(((uint32_t)p[13]) << 8) |
+						(((uint32_t)p[14]) << 16) |
+						(((uint32_t)p[15]) << 24);
 				riscv_batch_add_dmi_write(batch, DM_SBDATA3, sbvalue[3], false);
 			}
 
 			if (size > 8) {
-				sbvalue[2] = ((uint32_t) p[8]) |
-						(((uint32_t) p[9]) << 8) |
-						(((uint32_t) p[10]) << 16) |
-						(((uint32_t) p[11]) << 24);
+				sbvalue[2] = ((uint32_t)p[8]) |
+						(((uint32_t)p[9]) << 8) |
+						(((uint32_t)p[10]) << 16) |
+						(((uint32_t)p[11]) << 24);
 				riscv_batch_add_dmi_write(batch, DM_SBDATA2, sbvalue[2], false);
 			}
 			if (size > 4) {
-				sbvalue[1] = ((uint32_t) p[4]) |
-						(((uint32_t) p[5]) << 8) |
-						(((uint32_t) p[6]) << 16) |
-						(((uint32_t) p[7]) << 24);
+				sbvalue[1] = ((uint32_t)p[4]) |
+						(((uint32_t)p[5]) << 8) |
+						(((uint32_t)p[6]) << 16) |
+						(((uint32_t)p[7]) << 24);
 				riscv_batch_add_dmi_write(batch, DM_SBDATA1, sbvalue[1], false);
 			}
 
 			sbvalue[0] = p[0];
 			if (size > 2) {
-				sbvalue[0] |= ((uint32_t) p[2]) << 16;
-				sbvalue[0] |= ((uint32_t) p[3]) << 24;
+				sbvalue[0] |= ((uint32_t)p[2]) << 16;
+				sbvalue[0] |= ((uint32_t)p[3]) << 24;
 			}
 			if (size > 1)
-				sbvalue[0] |= ((uint32_t) p[1]) << 8;
+				sbvalue[0] |= ((uint32_t)p[1]) << 8;
 
 			riscv_batch_add_dmi_write(batch, DM_SBDATA0, sbvalue[0], false);
 
@@ -4595,7 +4595,7 @@ static int select_prepped_harts(struct target *target)
 		struct target *t = entry->target;
 		struct riscv_info *info = riscv_info(t);
 		riscv013_info_t *info_013 = get_info(t);
-		unsigned index = info_013->index;
+		unsigned int index = info_013->index;
 		LOG_DEBUG("index=%d, coreid=%d, prepped=%d", index, t->coreid, info->prepped);
 		if (info->prepped) {
 			info_013->selected = true;
@@ -4779,11 +4779,11 @@ static enum riscv_halt_reason riscv013_halt_reason(struct target *target)
 	}
 
 	LOG_ERROR("Unknown DCSR cause field: 0x%" PRIx64, get_field(dcsr, CSR_DCSR_CAUSE));
-	LOG_ERROR("  dcsr=0x%" PRIx32, (uint32_t) dcsr);
+	LOG_ERROR("  dcsr=0x%" PRIx32, (uint32_t)dcsr);
 	return RISCV_HALT_UNKNOWN;
 }
 
-int riscv013_write_debug_buffer(struct target *target, unsigned index, riscv_insn_t data)
+static int riscv013_write_debug_buffer(struct target *target, unsigned int index, riscv_insn_t data)
 {
 	dm013_info_t *dm = get_dm(target);
 	if (!dm)
@@ -4798,14 +4798,14 @@ int riscv013_write_debug_buffer(struct target *target, unsigned index, riscv_ins
 	return ERROR_OK;
 }
 
-riscv_insn_t riscv013_read_debug_buffer(struct target *target, unsigned index)
+static riscv_insn_t riscv013_read_debug_buffer(struct target *target, unsigned int index)
 {
 	uint32_t value;
 	dmi_read(target, &value, DM_PROGBUF0 + index);
 	return value;
 }
 
-int riscv013_invalidate_cached_debug_buffer(struct target *target)
+static int riscv013_invalidate_cached_debug_buffer(struct target *target)
 {
 	dm013_info_t *dm = get_dm(target);
 	if (!dm) {
@@ -4819,7 +4819,7 @@ int riscv013_invalidate_cached_debug_buffer(struct target *target)
 	return ERROR_OK;
 }
 
-int riscv013_execute_debug_buffer(struct target *target)
+static int riscv013_execute_debug_buffer(struct target *target)
 {
 	uint32_t run_program = 0;
 	run_program = set_field(run_program, AC_ACCESS_REGISTER_AARSIZE, 2);
@@ -4830,7 +4830,7 @@ int riscv013_execute_debug_buffer(struct target *target)
 	return execute_abstract_command(target, run_program);
 }
 
-void riscv013_fill_dmi_write_u64(struct target *target, char *buf, int a, uint64_t d)
+static void riscv013_fill_dmi_write_u64(struct target *target, char *buf, int a, uint64_t d)
 {
 	RISCV013_INFO(info);
 	buf_set_u64((unsigned char *)buf, DTM_DMI_OP_OFFSET, DTM_DMI_OP_LENGTH, DMI_OP_WRITE);
@@ -4838,7 +4838,7 @@ void riscv013_fill_dmi_write_u64(struct target *target, char *buf, int a, uint64
 	buf_set_u64((unsigned char *)buf, DTM_DMI_ADDRESS_OFFSET, info->abits, a);
 }
 
-void riscv013_fill_dmi_read_u64(struct target *target, char *buf, int a)
+static void riscv013_fill_dmi_read_u64(struct target *target, char *buf, int a)
 {
 	RISCV013_INFO(info);
 	buf_set_u64((unsigned char *)buf, DTM_DMI_OP_OFFSET, DTM_DMI_OP_LENGTH, DMI_OP_READ);
@@ -4846,7 +4846,7 @@ void riscv013_fill_dmi_read_u64(struct target *target, char *buf, int a)
 	buf_set_u64((unsigned char *)buf, DTM_DMI_ADDRESS_OFFSET, info->abits, a);
 }
 
-void riscv013_fill_dmi_nop_u64(struct target *target, char *buf)
+static void riscv013_fill_dmi_nop_u64(struct target *target, char *buf)
 {
 	RISCV013_INFO(info);
 	buf_set_u64((unsigned char *)buf, DTM_DMI_OP_OFFSET, DTM_DMI_OP_LENGTH, DMI_OP_NOP);
@@ -4854,7 +4854,7 @@ void riscv013_fill_dmi_nop_u64(struct target *target, char *buf)
 	buf_set_u64((unsigned char *)buf, DTM_DMI_ADDRESS_OFFSET, info->abits, 0);
 }
 
-int riscv013_dmi_write_u64_bits(struct target *target)
+static int riscv013_dmi_write_u64_bits(struct target *target)
 {
 	RISCV013_INFO(info);
 	return info->abits + DTM_DMI_DATA_LENGTH + DTM_DMI_OP_LENGTH;
@@ -4933,7 +4933,7 @@ static int riscv013_step_or_resume_current_hart(struct target *target,
 	return ERROR_FAIL;
 }
 
-void riscv013_clear_abstract_error(struct target *target)
+static void riscv013_clear_abstract_error(struct target *target)
 {
 	/* Wait for busy to go away. */
 	time_t start = time(NULL);
diff --git a/src/target/riscv/riscv.c b/src/target/riscv/riscv.c
index cc51ffdb9..b354905f3 100644
--- a/src/target/riscv/riscv.c
+++ b/src/target/riscv/riscv.c
@@ -28,7 +28,7 @@
 
 #define get_field(reg, mask) (((reg) & (mask)) / ((mask) & ~((mask) << 1)))
 #define set_field(reg, mask, val) (((reg) & ~(mask)) | (((val) * ((mask) & ~((mask) << 1))) & (mask)))
-#define field_value(mask, val) set_field((riscv_reg_t) 0, mask, val)
+#define field_value(mask, val) set_field((riscv_reg_t)0, mask, val)
 
 /*** JTAG registers. ***/
 
@@ -516,9 +516,9 @@ static bool can_use_napot_match(struct trigger *trigger)
 {
 	riscv_reg_t addr = trigger->address;
 	riscv_reg_t size = trigger->length;
-	bool sizePowerOf2 = (size & (size - 1)) == 0;
-	bool addrAligned = (addr & (size - 1)) == 0;
-	return size > 1 && sizePowerOf2 && addrAligned;
+	bool size_power_of_2 = (size & (size - 1)) == 0;
+	bool addr_aligned = (addr & (size - 1)) == 0;
+	return size > 1 && size_power_of_2 && addr_aligned;
 }
 
 /* Find the next free trigger of the given type, without talking to the target. */
@@ -531,7 +531,7 @@ static int find_next_free_trigger(struct target *target, int type, bool chained,
 	unsigned int num_found = 0;
 	unsigned int num_required = chained ? 2 : 1;
 
-	for (unsigned i = *idx; i < r->trigger_count; i++) {
+	for (unsigned int i = *idx; i < r->trigger_count; i++) {
 		if (r->trigger_unique_id[i] == -1) {
 			if (r->trigger_tinfo[i] & (1 << type)) {
 				num_found++;
@@ -561,7 +561,7 @@ static int find_first_trigger_by_id(struct target *target, int unique_id)
 {
 	RISCV_INFO(r);
 
-	for (unsigned i = 0; i < r->trigger_count; i++) {
+	for (unsigned int i = 0; i < r->trigger_count; i++) {
 		if (r->trigger_unique_id[i] == unique_id)
 			return i;
 	}
@@ -760,8 +760,8 @@ struct match_triggers_tdata1_fields {
 	riscv_reg_t tdata1_ignore_mask;
 };
 
-static struct match_triggers_tdata1_fields fill_match_triggers_tdata1_fields_t2(
-		struct target *target, struct trigger *trigger)
+static struct match_triggers_tdata1_fields fill_match_triggers_tdata1_fields_t2(struct target *target,
+	struct trigger *trigger)
 {
 	RISCV_INFO(r);
 
@@ -796,8 +796,8 @@ static struct match_triggers_tdata1_fields fill_match_triggers_tdata1_fields_t2(
 	return result;
 }
 
-static struct match_triggers_tdata1_fields fill_match_triggers_tdata1_fields_t6(
-		struct target *target, struct trigger *trigger)
+static struct match_triggers_tdata1_fields fill_match_triggers_tdata1_fields_t6(struct target *target,
+	struct trigger *trigger)
 {
 	bool misa_s = riscv_supports_extension(target, 'S');
 	bool misa_u = riscv_supports_extension(target, 'U');
@@ -1578,7 +1578,7 @@ int riscv_flush_registers(struct target *target)
 /**
  * Set OpenOCD's generic debug reason from the RISC-V halt reason.
  */
-int set_debug_reason(struct target *target, enum riscv_halt_reason halt_reason)
+static int set_debug_reason(struct target *target, enum riscv_halt_reason halt_reason)
 {
 	RISCV_INFO(r);
 	r->trigger_hit = -1;
@@ -2684,7 +2684,7 @@ static int riscv_checksum_memory(struct target *target,
 	buf_set_u64(reg_params[1].value, 0, xlen, count);
 
 	/* 20 second timeout/megabyte */
-	int timeout = 20000 * (1 + (count / (1024 * 1024)));
+	unsigned int timeout = 20000 * (1 + (count / (1024 * 1024)));
 
 	retval = target_run_algorithm(target, 0, NULL, 2, reg_params,
 			crc_algorithm->address,
@@ -2913,10 +2913,10 @@ int riscv_openocd_poll(struct target *target)
 		targets = &single_target_list;
 	}
 
-	unsigned should_remain_halted = 0;
-	unsigned should_resume = 0;
-	unsigned halted = 0;
-	unsigned running = 0;
+	unsigned int should_remain_halted = 0;
+	unsigned int should_resume = 0;
+	unsigned int halted = 0;
+	unsigned int running = 0;
 	struct target_list *entry;
 	foreach_smp_target(entry, targets) {
 		struct target *t = entry->target;
@@ -3509,9 +3509,9 @@ COMMAND_HANDLER(riscv_dmi_write)
 		   - if debug module was reset, in which case progbuf registers
 		     may not retain their value.
 		*/
-		bool progbufTouched = (address >= DM_PROGBUF0 && address <= DM_PROGBUF15);
-		bool dmDeactivated = (address == DM_DMCONTROL && (value & DM_DMCONTROL_DMACTIVE) == 0);
-		if (progbufTouched || dmDeactivated) {
+		bool progbuf_touched = (address >= DM_PROGBUF0 && address <= DM_PROGBUF15);
+		bool dm_deactivated = (address == DM_DMCONTROL && (value & DM_DMCONTROL_DMACTIVE) == 0);
+		if (progbuf_touched || dm_deactivated) {
 			if (r->invalidate_cached_debug_buffer)
 				r->invalidate_cached_debug_buffer(target);
 		}
@@ -3949,7 +3949,7 @@ COMMAND_HANDLER(handle_memory_sample_command)
 
 	if (CMD_ARGC == 0) {
 		command_print(CMD, "Memory sample configuration for %s:", target_name(target));
-		for (unsigned i = 0; i < ARRAY_SIZE(r->sample_config.bucket); i++) {
+		for (unsigned int i = 0; i < ARRAY_SIZE(r->sample_config.bucket); i++) {
 			if (r->sample_config.bucket[i].enabled) {
 				command_print(CMD, "bucket %d; address=0x%" TARGET_PRIxADDR "; size=%d", i,
 							  r->sample_config.bucket[i].address,
@@ -3969,7 +3969,7 @@ COMMAND_HANDLER(handle_memory_sample_command)
 	uint32_t bucket;
 	COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], bucket);
 	if (bucket > ARRAY_SIZE(r->sample_config.bucket)) {
-		LOG_ERROR("Max bucket number is %d.", (unsigned) ARRAY_SIZE(r->sample_config.bucket));
+		LOG_ERROR("Max bucket number is %zu.", ARRAY_SIZE(r->sample_config.bucket));
 		return ERROR_COMMAND_ARGUMENT_INVALID;
 	}
 
@@ -4036,7 +4036,7 @@ COMMAND_HANDLER(handle_dump_sample_buf_command)
 		command_print(CMD, "%s", encoded);
 		free(encoded);
 	} else {
-		unsigned i = 0;
+		unsigned int i = 0;
 		while (i < r->sample_buf.used) {
 			uint8_t command = r->sample_buf.buf[i++];
 			if (command == RISCV_SAMPLE_BUF_TIMESTAMP_BEFORE) {
@@ -4080,7 +4080,7 @@ error:
 }
 
 COMMAND_HELPER(riscv_print_info_line, const char *section, const char *key,
-			   unsigned value)
+			   unsigned int value)
 {
 	char full_key[80];
 	snprintf(full_key, sizeof(full_key), "%s.%s", section, key);
@@ -4437,7 +4437,7 @@ static const struct command_registration riscv_command_handlers[] = {
 	COMMAND_REGISTRATION_DONE
 };
 
-static unsigned riscv_xlen_nonconst(struct target *target)
+static unsigned int riscv_xlen_nonconst(struct target *target)
 {
 	return riscv_xlen(target);
 }
@@ -5981,7 +5981,7 @@ int riscv_init_registers(struct target *target)
 			} else if (r->exist && !list_empty(&info->hide_csr)) {
 				range_list_t *entry;
 				list_for_each_entry(entry, &info->hide_csr, list)
-					if ((entry->low <= csr_number) && (csr_number <= entry->high)) {
+					if (entry->low <= csr_number && csr_number <= entry->high) {
 						LOG_TARGET_DEBUG(target, "Hiding CSR %d (name=%s)", csr_number, r->name);
 						r->hidden = true;
 						break;
diff --git a/src/target/target.c b/src/target/target.c
index 581f5ef58..6481dfb61 100644
--- a/src/target/target.c
+++ b/src/target/target.c
@@ -1948,13 +1948,13 @@ static int target_call_timer_callbacks_check_time(int checktime)
 	return ERROR_OK;
 }
 
-int target_call_timer_callbacks()
+int target_call_timer_callbacks(void)
 {
 	return target_call_timer_callbacks_check_time(1);
 }
 
 /* invoke periodic callbacks immediately */
-int target_call_timer_callbacks_now()
+int target_call_timer_callbacks_now(void)
 {
 	return target_call_timer_callbacks_check_time(0);
 }