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pci: Show a message if PCI autoconfig fails

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At present this fails silently which can be confusing since some devices
on the PCI bus may not work correctly. Show a message in this case.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: add a '\n' in the PCI autoconfig fail message]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2019-09-25 08:56:16 -06:00 committed by Bin Meng
parent f365152a55
commit 6a73cf3d8f
1 changed files with 9 additions and 3 deletions
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12
drivers/pci/pci_auto.c
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@ -39,6 +39,8 @@ void dm_pciauto_setup_device(struct udevice *dev, int bars_num,
for (bar = PCI_BASE_ADDRESS_0;
bar < PCI_BASE_ADDRESS_0 + (bars_num * 4); bar += 4) {
int ret = 0;
/* Tickle the BAR and get the response */
if (!enum_only)
dm_pci_write_config32(dev, bar, 0xffffffff);
@ -97,9 +99,13 @@ void dm_pciauto_setup_device(struct udevice *dev, int bars_num,
(unsigned long long)bar_size);
}
if (!enum_only && pciauto_region_allocate(bar_res, bar_size,
&bar_value,
found_mem64) == 0) {
if (!enum_only) {
ret = pciauto_region_allocate(bar_res, bar_size,
&bar_value, found_mem64);
if (ret)
printf("PCI: Failed autoconfig bar %x\n", bar);
}
if (!enum_only && !ret) {
/* Write it out and update our limit */
dm_pci_write_config32(dev, bar, (u32)bar_value);