diff mbox series

[06/22] PCI: exynos: Use SET_PCI_ERROR_RESPONSE() when device not found

Message ID c6093448693d9623d66ba3f1d7b9ce990494410c.1633972263.git.naveennaidu479@gmail.com (mailing list archive)
State New
Headers show
Series PCI: Unify PCI error response checking | expand

Commit Message

Naveen Naidu Oct. 11, 2021, 5:52 p.m. UTC
An MMIO read from a PCI device that doesn't exist or doesn't respond
causes a PCI error.  There's no real data to return to satisfy the
CPU read, so most hardware fabricates ~0 data.

Use SET_PCI_ERROR_RESPONSE() to set the error response, when a faulty
read occurs.

This helps unify PCI error response checking and make error check
consistent and easier to find.

Compile tested only.

Signed-off-by: Naveen Naidu <naveennaidu479@gmail.com>
 drivers/pci/controller/dwc/pci-exynos.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series


diff --git a/drivers/pci/controller/dwc/pci-exynos.c b/drivers/pci/controller/dwc/pci-exynos.c
index c24dab383654..1fdbef184532 100644
--- a/drivers/pci/controller/dwc/pci-exynos.c
+++ b/drivers/pci/controller/dwc/pci-exynos.c
@@ -217,7 +217,7 @@  static int exynos_pcie_rd_own_conf(struct pci_bus *bus, unsigned int devfn,
 	struct dw_pcie *pci = to_dw_pcie_from_pp(bus->sysdata);
 	if (PCI_SLOT(devfn)) {
-		*val = ~0;