[PATCH 1/2] cxl: Convert PCIBIOS errors to errno on remaining DVSEC/PCIe accesses

[Richard Cheng <icheng@nvidia.com>]

PCI config and PCIe capability accessors return positive PCIBIOS_*
status codes on failure, not negative errnos. update_gpf_port_dvsec()
and cxl_setup_parent_dport() propagate these raw values to callers that
test for failure with "if (rc)" and expect a negative errno, which can
misreport the error.

Conver the positive PCIBIOS status with pcibios_err_to_errno() on these
error paths.

Signed-off-by: Richard Cheng <icheng@nvidia.com>
---
 drivers/cxl/core/pci.c | 2 +-
 drivers/cxl/port.c     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/cxl/core/pci.c b/drivers/cxl/core/pci.c
index e4338fd7e01b..ea81a170132f 100644
--- a/drivers/cxl/core/pci.c
+++ b/drivers/cxl/core/pci.c
@@ -852,7 +852,7 @@ static int update_gpf_port_dvsec(struct pci_dev *pdev, int dvsec, int phase)
 		pci_dbg(pdev, "Port GPF phase %d timeout: %d0 secs\n",
 			phase, GPF_TIMEOUT_BASE_MAX);
 
-	return rc;
+	return pcibios_err_to_errno(rc);
 }
 
 int cxl_gpf_port_setup(struct cxl_dport *dport)
diff --git a/drivers/cxl/port.c b/drivers/cxl/port.c
index ada51948d52f..dc3029efb087 100644
--- a/drivers/cxl/port.c
+++ b/drivers/cxl/port.c
@@ -92,7 +92,7 @@ static int cxl_ras_unmask(struct cxl_port *port)
 
 	rc = pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &cap);
 	if (rc)
-		return rc;
+		return pcibios_err_to_errno(rc);
 
 	if (cap & PCI_EXP_DEVCTL_URRE) {
 		addr = port->regs.ras + CXL_RAS_UNCORRECTABLE_MASK_OFFSET;
-- 
2.43.0