Fix bug for io_bar size during pci scan

During the pci scan process, Some devices return bar_reponse with the
highest bytes 0, such as the pci bridge in uli1575 return bar_response
with 0xffffff, So the bar_size should be manually set under 64K.

Signed-off-by: Jason Jin <jason.jin@freescale.com>

diff --git a/drivers/pci_auto.c b/drivers/pci_auto.c
index 15f74328f0a6a011c58cd425c56cb3a561dd1c98..9e921b2148a41d9c06eaa288e4a378b8c7b64edb 100644 (file)
--- a/drivers/pci_auto.c
+++ b/drivers/pci_auto.c
@@ -102,7 +102,8 @@ void pciauto_setup_device(struct pci_controller *hose,
 
                /* Check the BAR type and set our address mask */
                if (bar_response & PCI_BASE_ADDRESS_SPACE) {
-                       bar_size = ~(bar_response & PCI_BASE_ADDRESS_IO_MASK) + 1;
+                       bar_size = ((~(bar_response & PCI_BASE_ADDRESS_IO_MASK))
+                                  & 0xffff) + 1;
                        bar_res = io;
 
                        DEBUGF("PCI Autoconfig: BAR %d, I/O, size=0x%x, ", bar_nr, bar_size);