Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Sean V Kelley <seanvk.dev@oregontracks.org>
To:     bhelgaas@google.com, Jonathan.Cameron@huawei.com,
        rafael.j.wysocki@intel.com, ashok.raj@intel.com,
        tony.luck@intel.com, sathyanarayanan.kuppuswamy@intel.com,
        qiuxu.zhuo@intel.com
Cc:     linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
        Sean V Kelley <sean.v.kelley@intel.com>
Subject: [PATCH v9 15/15] PCI/AER: Add RCEC AER error injection support
Date:   Thu, 15 Oct 2020 17:11:13 -0700
Message-Id: <20201016001113.2301761-16-seanvk.dev@oregontracks.org>
In-Reply-To: <20201016001113.2301761-1-seanvk.dev@oregontracks.org>
References: <20201016001113.2301761-1-seanvk.dev@oregontracks.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: Qiuxu Zhuo <qiuxu.zhuo@intel.com>

Root Complex Event Collectors (RCEC) appear as peers to Root Ports and may
also have the AER capability.

Add RCEC support to the AER error injection driver.

Co-developed-by: Sean V Kelley <sean.v.kelley@intel.com>
Link: https://lore.kernel.org/r/20201002184735.1229220-15-seanvk.dev@oregontracks.org
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Sean V Kelley <sean.v.kelley@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
 drivers/pci/pcie/aer_inject.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/pcie/aer_inject.c b/drivers/pci/pcie/aer_inject.c
index c2cbf425afc5..767f8859b99b 100644
--- a/drivers/pci/pcie/aer_inject.c
+++ b/drivers/pci/pcie/aer_inject.c
@@ -333,8 +333,11 @@ static int aer_inject(struct aer_error_inj *einj)
 	if (!dev)
 		return -ENODEV;
 	rpdev = pcie_find_root_port(dev);
+	/* If Root Port not found, try to find an RCEC */
+	if (!rpdev)
+		rpdev = dev->rcec;
 	if (!rpdev) {
-		pci_err(dev, "Root port not found\n");
+		pci_err(dev, "Neither Root Port nor RCEC found\n");
 		ret = -ENODEV;
 		goto out_put;
 	}
-- 
2.28.0