As stated in comment above the code, CRS response can be returned to OS
only for 4-byte PCI_VENDOR_ID config read request. So fix the code.
Fixes: 1d7ad68559e2 ("arm: a37xx: pci: Handle propagation of CRSSVE bit from
PCIe Root Port")
Signed-off-by: Pali Rohár <p...@kernel.org>
---
drivers/pci/pci-aardvark.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/pci-aardvark.c b/drivers/pci/pci-aardvark.c
index ade5ab056f84..9e623b6e617b 100644
--- a/drivers/pci/pci-aardvark.c
+++ b/drivers/pci/pci-aardvark.c
@@ -445,7 +445,7 @@ static int pcie_advk_read_config(const struct udevice *bus,
pci_dev_t bdf,
* for returning CRS, so that if U-Boot does support CRS in the future,
* it will work for Aardvark.
*/
- allow_crs = pcie->cfgcrssve;
+ allow_crs = (offset == PCI_VENDOR_ID) && (size == PCI_SIZE_32) &&
pcie->cfgcrssve;
if (advk_readl(pcie, PIO_START)) {
dev_err(pcie->dev,
--
2.20.1
