[U-Boot] [PATCH v4 3/4] Revert "pci: Scale MAX_PCI_REGIONS based on CONFIG_NR_DRAM_BANKS"

[Simon Glass]

This reverts commit aec4298ccb337106fd0115b91d846a022fdf301d.

Unfortunately this has a dramatic impact on the pre-relocation memory
used on x86 platforms (increasing it by 2KB) since it increases the
overhead for each PCI device from 220 bytes to 412 bytes.

The offending line is in UCLASS_DRIVER(pci):

	.per_device_auto_alloc_size = sizeof(struct pci_controller),

This means that all PCI devices have the controller struct associated
with them. The solution is to move the regions[] member out of the array,
makes its size dynamic, or split UCLASS_PCI into controllers and
non-controllers, as the comment suggests.

For now, revert the commit to get things running again.

Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
Signed-off-by: Simon Glass <sjg at chromium.org>
---

Changes in v4: None
Changes in v3: None
Changes in v2: None

 include/pci.h | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/include/pci.h b/include/pci.h
index 066238a9c3c..508f7bca81c 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -546,11 +546,7 @@ extern void pci_cfgfunc_do_nothing(struct pci_controller* hose, pci_dev_t dev,
 extern void pci_cfgfunc_config_device(struct pci_controller* hose, pci_dev_t dev,
 				      struct pci_config_table *);
 
-#ifdef CONFIG_NR_DRAM_BANKS
-#define MAX_PCI_REGIONS (CONFIG_NR_DRAM_BANKS + 7)
-#else
-#define MAX_PCI_REGIONS 7
-#endif
+#define MAX_PCI_REGIONS		7
 
 #define INDIRECT_TYPE_NO_PCIE_LINK	1
 
-- 
2.21.0.1020.gf2820cf01a-goog