fix(versal2): modify function to have single return
This corrects the MISRA violation C2012-15.5:
A function should have a single point of exit at the end.
Introduced a temporary variable to store the return value to
ensure single return for the function.
Change-Id: Ib152831e84f5ead5b57fd713ebfedb1f3340a727
Signed-off-by: Maheedhar Bollapalli <maheedharsai.bollapalli@amd.com>
diff --git a/plat/amd/versal2/bl31_setup.c b/plat/amd/versal2/bl31_setup.c
index 6e7fffe..6512dbc 100644
--- a/plat/amd/versal2/bl31_setup.c
+++ b/plat/amd/versal2/bl31_setup.c
@@ -170,16 +170,19 @@
{
static uint32_t index;
uint32_t i;
+ int32_t ret = 0;
/* Validate 'handler' and 'id' parameters */
if ((handler == NULL) || (index >= MAX_INTR_EL3)) {
- return -EINVAL;
+ ret = -EINVAL;
+ goto exit_label;
}
/* Check if a handler has already been registered */
for (i = 0; i < index; i++) {
if (id == type_el3_interrupt_table[i].id) {
- return -EALREADY;
+ ret = -EALREADY;
+ goto exit_label;
}
}
@@ -188,7 +191,8 @@
index++;
- return 0;
+exit_label:
+ return ret;
}
static uint64_t rdo_el3_interrupt_handler(uint32_t id, uint32_t flags,
diff --git a/plat/amd/versal2/include/platform_def.h b/plat/amd/versal2/include/platform_def.h
index 42c9b08..be1e351 100644
--- a/plat/amd/versal2/include/platform_def.h
+++ b/plat/amd/versal2/include/platform_def.h
@@ -24,6 +24,9 @@
#define PLATFORM_CORE_COUNT (PLATFORM_CLUSTER_COUNT * PLATFORM_CORE_COUNT_PER_CLUSTER)
+#define E_INVALID_CORE_COUNT -1
+#define E_INVALID_CLUSTER_COUNT -3
+
#define PLAT_MAX_PWR_LVL U(2)
#define PLAT_MAX_RET_STATE U(1)
#define PLAT_MAX_OFF_STATE U(2)
diff --git a/plat/amd/versal2/plat_psci.c b/plat/amd/versal2/plat_psci.c
index e8dc5d3..55842cc 100644
--- a/plat/amd/versal2/plat_psci.c
+++ b/plat/amd/versal2/plat_psci.c
@@ -40,12 +40,14 @@
int32_t cluster = cpu_id / PLATFORM_CORE_COUNT_PER_CLUSTER;
uintptr_t apu_cluster_base = 0, apu_pcli_base, apu_pcli_cluster = 0;
uintptr_t rst_apu_cluster = PSX_CRF + RST_APU0_OFFSET + ((uint64_t)cluster * 0x4U);
+ int32_t ret = PSCI_E_SUCCESS;
VERBOSE("%s: mpidr: 0x%lx, cpuid: %x, cpu: %x, cluster: %x\n",
__func__, mpidr, cpu_id, cpu, cluster);
if (cpu_id == -1) {
- return PSCI_E_INTERN_FAIL;
+ ret = PSCI_E_INTERN_FAIL;
+ goto exit_label;
}
if (cluster > 3U) {
@@ -84,7 +86,8 @@
mmio_write_32(apu_pcli_base + PCLI_PSTATE_OFFSET, PCLI_PSTATE_VAL_CLEAR);
mmio_write_32(apu_pcli_base + PCLI_PREQ_OFFSET, PREQ_CHANGE_REQUEST);
- return PSCI_E_SUCCESS;
+exit_label:
+ return ret;
}
static void zynqmp_nopmu_pwr_domain_off(const psci_power_state_t *target_state)
@@ -101,13 +104,15 @@
static int32_t zynqmp_validate_ns_entrypoint(uint64_t ns_entrypoint)
{
+ int32_t ret = PSCI_E_INVALID_ADDRESS;
+
VERBOSE("Validate ns_entry point %lx\n", ns_entrypoint);
if ((ns_entrypoint) != 0U) {
- return PSCI_E_SUCCESS;
- } else {
- return PSCI_E_INVALID_ADDRESS;
+ ret = PSCI_E_SUCCESS;
}
+
+ return ret;
}
static void zynqmp_pwr_domain_on_finish(const psci_power_state_t *target_state)
diff --git a/plat/amd/versal2/plat_topology.c b/plat/amd/versal2/plat_topology.c
index 0763139..434e08a 100644
--- a/plat/amd/versal2/plat_topology.c
+++ b/plat/amd/versal2/plat_topology.c
@@ -41,6 +41,7 @@
int32_t plat_core_pos_by_mpidr(u_register_t mpidr)
{
uint32_t cluster_id, cpu_id;
+ int32_t ret = 0;
mpidr &= MPIDR_AFFINITY_MASK;
@@ -48,7 +49,8 @@
cpu_id = MPIDR_AFFLVL1_VAL(mpidr);
if (cluster_id >= PLATFORM_CLUSTER_COUNT) {
- return -3;
+ ret = E_INVALID_CLUSTER_COUNT;
+ goto exit_label;
}
/*
@@ -56,8 +58,11 @@
* one of the two clusters present on the platform.
*/
if (cpu_id >= PLATFORM_CORE_COUNT_PER_CLUSTER) {
- return -1;
+ ret = E_INVALID_CORE_COUNT;
+ } else {
+ ret = (cpu_id + (cluster_id * PLATFORM_CORE_COUNT_PER_CLUSTER));
}
- return (cpu_id + (cluster_id * PLATFORM_CORE_COUNT_PER_CLUSTER));
+exit_label:
+ return ret;
}
diff --git a/plat/amd/versal2/scmi.c b/plat/amd/versal2/scmi.c
index 53a835b..0d384a5 100644
--- a/plat/amd/versal2/scmi.c
+++ b/plat/amd/versal2/scmi.c
@@ -288,13 +288,16 @@
uint32_t start_idx)
{
const struct scmi_clk *clock = clk_find(agent_id, scmi_id);
+ int32_t ret = SCMI_SUCCESS;
if (clock == NULL) {
- return SCMI_NOT_FOUND;
+ ret = SCMI_NOT_FOUND;
+ goto exit_label;
}
if (start_idx > 0U) {
- return SCMI_OUT_OF_RANGE;
+ ret = SCMI_OUT_OF_RANGE;
+ goto exit_label;
}
if (array == NULL) {
@@ -304,10 +307,11 @@
VERBOSE("SCMI: CLK: id: %d, clk_name: %s, get_rate %lu\n",
scmi_id, clock->name, *array);
} else {
- return SCMI_GENERIC_ERROR;
+ ret = SCMI_GENERIC_ERROR;
}
- return SCMI_SUCCESS;
+exit_label:
+ return ret;
}
unsigned long plat_scmi_clock_get_rate(unsigned int agent_id, unsigned int scmi_id)
@@ -529,12 +533,13 @@
const char *plat_scmi_pd_get_name(unsigned int agent_id, unsigned int pd_id)
{
const struct scmi_pd *pd = find_pd(agent_id, pd_id);
+ const char *ret = NULL;
- if (pd == NULL) {
- return NULL;
+ if (pd != NULL) {
+ ret = pd->name;
}
- return pd->name;
+ return ret;
}
unsigned int plat_scmi_pd_statistics(unsigned int agent_id, unsigned long *pd_id)
@@ -550,14 +555,15 @@
unsigned int plat_scmi_pd_get_state(unsigned int agent_id, unsigned int pd_id)
{
const struct scmi_pd *pd = find_pd(agent_id, pd_id);
+ uint32_t ret = SCMI_NOT_SUPPORTED;
- if (pd == NULL) {
- return SCMI_NOT_SUPPORTED;
- }
+ if (pd != NULL) {
+ NOTICE("SCMI: PD: get id: %d, state: %x\n", pd_id, pd->state);
- NOTICE("SCMI: PD: get id: %d, state: %x\n", pd_id, pd->state);
+ ret = pd->state;
+ }
- return pd->state;
+ return ret;
}
int32_t plat_scmi_pd_set_state(unsigned int agent_id, unsigned int flags, unsigned int pd_id,
@@ -568,14 +574,15 @@
if (pd == NULL) {
ret = SCMI_NOT_SUPPORTED;
- } else {
+ goto exit_label;
+ }
- NOTICE("SCMI: PD: set id: %d, orig state: %x, new state: %x, flags: %x\n",
- pd_id, pd->state, state, flags);
+ NOTICE("SCMI: PD: set id: %d, orig state: %x, new state: %x, flags: %x\n",
+ pd_id, pd->state, state, flags);
- pd->state = state;
- }
+ pd->state = state;
+exit_label:
return ret;
}