dm: pci: Avoid setting a PCI region that has 0 size
It makes no sense to set a PCI region that has 0 size.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index 9d51236..a2e8296 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -897,8 +897,9 @@
#endif
if (gd->pci_ram_top && gd->pci_ram_top < base + size)
size = gd->pci_ram_top - base;
- pci_set_region(hose->regions + hose->region_count++, base, base,
- size, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
+ if (size)
+ pci_set_region(hose->regions + hose->region_count++, base,
+ base, size, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
#endif
return 0;