/* Verify each defined memory region is valid. */
static bool ipa_mem_valid(struct ipa *ipa, const struct ipa_mem_data *mem_data)
{
+ DECLARE_BITMAP(regions, IPA_MEM_COUNT) = { };
struct device *dev = &ipa->pdev->dev;
enum ipa_mem_id mem_id;
for (mem_id = 0; mem_id < mem_data->local_count; mem_id++) {
const struct ipa_mem *mem = &mem_data->local[mem_id];
+ if (mem_id == IPA_MEM_UNDEFINED)
+ continue;
+
+ if (__test_and_set_bit(mem->id, regions)) {
+ dev_err(dev, "duplicate memory region %u\n", mem->id);
+ return false;
+ }
+
/* Defined regions have non-zero size and/or canary count */
if (mem->size || mem->canary_count) {
if (ipa_mem_valid_one(ipa, mem))