| Message ID | 20240312105152.3457899-2-cassel@kernel.org |
|---|---|
| State | New |
| Headers | show |
| Series | PCI: endpoint: set prefetchable bit for 64-bit BARs | expand |
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index cd4ffb39dcdc..01ba088849cc 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -865,6 +865,12 @@ static int pci_epf_test_alloc_space(struct pci_epf *epf) dev_err(dev, "Failed to allocate space for BAR%d\n", bar); epf_test->reg[bar] = base; + + /* + * pci_epf_alloc_space() might have given us a 64-bit BAR, + * if we requested a size larger than 4 GB. + */ + add = (epf_bar->flags & PCI_BASE_ADDRESS_MEM_TYPE_64) ? 2 : 1; } return 0;
pci_epf_test_alloc_space() currently skips the BAR succeeding a 64-bit BAR if the 64-bit flag is set, before calling pci_epf_alloc_space(). However, pci_epf_alloc_space() will set the 64-bit flag if we request an allocation of 4 GB or larger, even if it wasn't set before the allocation. Thus, we need to check the flag also after pci_epf_alloc_space(). Signed-off-by: Niklas Cassel <cassel@kernel.org> --- drivers/pci/endpoint/functions/pci-epf-test.c | 6 ++++++ 1 file changed, 6 insertions(+)