PCI: endpoint: Setting a BAR size > 4 GB is invalid if 64-bit flag is not set

Setting a BAR size > 4 GB is invalid if PCI_BASE_ADDRESS_MEM_TYPE_64
flag is not set.

This sanity check is done in pci_epc_set_bar(), so that we don't need
to do this sanity check in all epc->ops->set_bar() implementations.

Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>

drivers/pci/endpoint/pci-epc-core.c

@@ -315,7 +315,9 @@ int pci_epc_set_bar(struct pci_epc *epc, u8 func_no,
 	    (epf_bar->barno == BAR_5 &&
 	     flags & PCI_BASE_ADDRESS_MEM_TYPE_64) ||
 	    (flags & PCI_BASE_ADDRESS_SPACE_IO &&
-	     flags & PCI_BASE_ADDRESS_IO_MASK))
+	     flags & PCI_BASE_ADDRESS_IO_MASK) ||
+	    (upper_32_bits(epf_bar->size) &&
+	     !(flags & PCI_BASE_ADDRESS_MEM_TYPE_64)))
 		return -EINVAL;
 
 	if (!epc->ops->set_bar)