dev/pci: Unmap memory on allocation failure

2026-11-02 21:53:06 +01:00
parent 54f279a9e6
commit fd50c97f1a
3 changed files with 24 additions and 4 deletions
@@ -43,8 +43,14 @@ errno_t pci_ecam_register(phys_t base, uint16_t domain, uint8_t start_bus, uint8

    for (size_t i = 0; i < length; i += arch_mem_page_size()) {
        errno_t status = pmap_map(&kernel_vma.pmap, vaddr + i, phys + i, PTE_READ | PTE_WRITE, CACHE_MMIO);
-        if (status != 0)
+        if (status != 0) {
+            while (i) {
+                i -= arch_mem_page_size();
+                pmap_unmap(&kernel_vma.pmap, vaddr + i);
+            }
+            vm_free(vaddr, length);
            return status;
+        }
    }

    struct pci_ecam* ecam = mem_alloc(sizeof(*ecam), 0);