From: Mingkai Hu Mingkai.Hu@freescale.com
Referring to 'commit ff3e077bd23c ("dm: pci: Add a uclass for PCI")'.
For legacy PCIe driver, it needs loop to read the vender_id from devie 0 to devie 255 to check if there is device available. Reading non-existen device will trigger the "Cannot read bus configuration: -1" information.
Signed-off-by: Mingkai Hu Mingkai.Hu@freescale.com Signed-off-by: Gong Qianyu Qianyu.Gong@nxp.com --- common/cmd_pci.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/common/cmd_pci.c b/common/cmd_pci.c index 4e0951f..d94f90d 100644 --- a/common/cmd_pci.c +++ b/common/cmd_pci.c @@ -324,7 +324,9 @@ void pciinfo(int bus_num, int short_pci_listing) unsigned char header_type; unsigned short vendor_id; pci_dev_t dev; +#ifdef CONFIG_DM_PCI int ret; +#endif
if (!hose) return; @@ -348,10 +350,14 @@ void pciinfo(int bus_num, int short_pci_listing) if (pci_skip_dev(hose, dev)) continue;
+#ifdef CONFIG_DM_PCI ret = pci_read_config_word(dev, PCI_VENDOR_ID, &vendor_id); if (ret) goto error; +#else + pci_read_config_word(dev, PCI_VENDOR_ID, &vendor_id); +#endif if ((vendor_id == 0xFFFF) || (vendor_id == 0x0000)) continue;
@@ -373,8 +379,10 @@ void pciinfo(int bus_num, int short_pci_listing) }
return; +#ifdef CONFIG_DM_PCI error: printf("Cannot read bus configuration: %d\n", ret); +#endif } #endif