commit b7598a43f2b4 ("[PATCH] Avoid assigning PCI resources from
zero address") only moved the bus lower address to 0x1000 if the
given bus start address is zero. The comment said 0x1000 is a
reasonable starting value, hence we'd better apply the same
adjustment when the given bus start address is below 0x1000.
Signed-off-by: Bin Meng <bmeng...@gmail.com>
---
Changes in v2:
- avoid changing res->bus_start
drivers/pci/pci_auto_common.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/pci_auto_common.c b/drivers/pci/pci_auto_common.c
index 1837873..84908e6 100644
--- a/drivers/pci/pci_auto_common.c
+++ b/drivers/pci/pci_auto_common.c
@@ -21,9 +21,10 @@ void pciauto_region_init(struct pci_region *res)
/*
* Avoid allocating PCI resources from address 0 -- this is illegal
* according to PCI 2.1 and moreover, this is known to cause Linux IDE
- * drivers to fail. Use a reasonable starting value of 0x1000 instead.
+ * drivers to fail. Use a reasonable starting value of 0x1000 instead
+ * if the bus start address is below 0x1000.
*/
- res->bus_lower = res->bus_start ? res->bus_start : 0x1000;
+ res->bus_lower = res->bus_start < 0x1000 ? 0x1000 : res->bus_start;
}
void pciauto_region_align(struct pci_region *res, pci_size_t size)
--
2.7.4
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
