linux-kernel - [PATCH v2 6/8] PCI/AER: Convert PCIBIOS

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Date:   Mon, 15 Jun 2020 09:32:23 +0200
From:   refactormyself@...il.com
To:     helgaas@...nel.org
Cc:     Bolarinwa Olayemi Saheed <refactormyself@...il.com>,
        bjorn@...gaas.com, linux-pci@...r.kernel.org,
        skhan@...uxfoundation.org, Russell Currey <ruscur@...sell.cc>,
        Sam Bobroff <sbobroff@...ux.ibm.com>,
        "Oliver O'Halloran" <oohall@...il.com>,
        linuxppc-dev@...ts.ozlabs.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 6/8] PCI/AER: Convert PCIBIOS_* errors to generic -E* errors

From: Bolarinwa Olayemi Saheed <refactormyself@...il.com>

pci_enable_pcie_error_reporting() return PCIBIOS_ error codes which were
passed on down the call heirarchy from PCIe capability accessors.

PCIBIOS_ error codes have positive values. Passing on these values is
inconsistent with functions which return only a negative value on failure.

Before passing on the return value of PCIe capability accessors, call
pcibios_err_to_errno() to convert any positive PCIBIOS_ error codes to
negative generic error values.

Suggested-by: Bjorn Helgaas <bjorn@...gaas.com>
Signed-off-by: Bolarinwa Olayemi Saheed <refactormyself@...il.com>
---
 drivers/pci/pcie/aer.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
index f4274d301235..95d480a52078 100644
--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c
@@ -349,13 +349,17 @@ bool aer_acpi_firmware_first(void)
 
 int pci_enable_pcie_error_reporting(struct pci_dev *dev)
 {
+	int rc;
+
 	if (pcie_aer_get_firmware_first(dev))
 		return -EIO;
 
 	if (!dev->aer_cap)
 		return -EIO;
 
-	return pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_AER_FLAGS);
+	rc = pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_AER_FLAGS);
+
+	return pcibios_err_to_errno(rc);
 }
 EXPORT_SYMBOL_GPL(pci_enable_pcie_error_reporting);
 
-- 
2.18.2