ace: mm: tlb: Ignore unmappig error in driver initalization

The sys_mm_drv_unmap_region_initial function is responsible for unmapping all unused virtual memory during tlb driver initialization. Most addresses will not have a mapped page. Ignore the error code indicating unmapped memory that will occur when trying to unmap. Signed-off-by: Adrian Warecki <[email protected]>
zephyrproject-rtos · Oct 15, 2024 · 0e9b9b0 · 0e9b9b0
1 parent 3be548b
commit 0e9b9b0
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c b/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c
@@ -478,7 +478,11 @@ static int sys_mm_drv_unmap_region_initial(void *virt_in, size_t size)
 
 		int ret2 = sys_mm_drv_unmap_page_wflush(va, false);
 
-		if (ret2 != 0) {
+		/* -EFAULT means that this page is not mapped.
+		 * This is not an error since we want to unmap all virtual memory without knowing
+		 * which pages are mapped.
+		 */
+		if (ret2 != 0 && ret2 != -EFAULT) {
 			__ASSERT(false, "cannot unmap %p\n", va);
 
 			ret = ret2;