From 1eaf7800b6b99b48e73eab56202cf1c7a0e19ac9 Mon Sep 17 00:00:00 2001
From: Bin Meng <bmeng.cn@gmail.com>
Date: Tue, 27 Mar 2018 00:46:05 -0700
Subject: [PATCH] dm: pci: Check board information pointer in decode_regions()
PCI enumeration may happen very early on an x86 board. The board
information pointer should have been checked in decode_regions()
as its space may not be allocated yet.
With this commit, Intel Galileo board boots again.
Fixes: 664758c ("pci: Fix decode regions for memory banks")
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
drivers/pci/pci-uclass.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index ad43e8a27c..9d51236770 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -876,6 +876,9 @@ static int decode_regions(struct pci_controller *hose, ofnode parent_node,
#ifdef CONFIG_NR_DRAM_BANKS
bd_t *bd = gd->bd;
+ if (!bd)
+ return 0;
+
for (i = 0; i < CONFIG_NR_DRAM_BANKS; ++i) {
if (bd->bi_dram[i].size) {
pci_set_region(hose->regions + hose->region_count++,
--
2.39.5