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dm: pci: Avoid setting a PCI region that has 0 size

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It makes no sense to set a PCI region that has 0 size.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2018-03-27 00:46:06 -07:00
parent 1eaf7800b6
commit ee1109bb45
1 changed files with 3 additions and 2 deletions
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5
drivers/pci/pci-uclass.c
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@ -897,8 +897,9 @@ static int decode_regions(struct pci_controller *hose, ofnode parent_node,
#endif
if (gd->pci_ram_top && gd->pci_ram_top < base + size)
size = gd->pci_ram_top - base;
pci_set_region(hose->regions + hose->region_count++, base, base,
size, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
if (size)
pci_set_region(hose->regions + hose->region_count++, base,
base, size, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
#endif
return 0;