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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Maurizio Lombardi <mlombard@redhat.com>
Date: Mon, 18 Jun 2018 12:51:25 -0400
Subject: [PATCH] add pci_hw_vendor_status()
Message-id: <1529326285-28560-1-git-send-email-mlombard@redhat.com>
Patchwork-id: 222337
O-Subject: [RHEL8 PATCH] pci: add pci_hw_vendor_status()
Bugzilla: 1590829
RH-Acked-by: Tomas Henzl <thenzl@redhat.com>
RH-Acked-by: Prarit Bhargava <prarit@redhat.com>
This patch adds pci_hw_vendor_status() like in RHEL7 which should be called
during the driver's probe to identify deprecated devices.
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1590829
Brew: https://brewweb.devel.redhat.com/taskinfo?taskID=16761315
See RHEL7 commits e0dddd9a63403ec82077ed410074fc6485873d4b and
3fcddde5ddf4b190c84ce9d83d56a75137513bd7
RHEL_only.
Upstream Status: RHEL only
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
---
drivers/pci/pci-driver.c | 29 +++++++++++++++++++++++++++++
include/linux/pci.h | 4 ++++
2 files changed, 33 insertions(+)
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 0454ca0e4e3f..5cc490b821be 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -18,6 +18,7 @@
#include <linux/kexec.h>
#include <linux/of_device.h>
#include <linux/acpi.h>
+#include <linux/kernel.h>
#include "pci.h"
#include "pcie/portdrv.h"
@@ -278,6 +279,34 @@ static const struct pci_device_id *pci_match_device(struct pci_driver *drv,
return found_id;
}
+/**
+ * pci_hw_vendor_status - Tell if a PCI device is supported by the HW vendor
+ * @ids: array of PCI device id structures to search in
+ * @dev: the PCI device structure to match against
+ *
+ * Used by a driver to check whether this device is in its list of unsupported
+ * devices. Returns the matching pci_device_id structure or %NULL if there is
+ * no match.
+ *
+ * Reserved for Internal Red Hat use only.
+ */
+const struct pci_device_id *pci_hw_vendor_status(
+ const struct pci_device_id *ids,
+ struct pci_dev *dev)
+{
+ char devinfo[64];
+ const struct pci_device_id *ret = pci_match_id(ids, dev);
+
+ if (ret) {
+ snprintf(devinfo, sizeof(devinfo), "%s %s",
+ dev_driver_string(&dev->dev), dev_name(&dev->dev));
+ mark_hardware_deprecated(devinfo);
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL(pci_hw_vendor_status);
+
struct drv_dev_and_id {
struct pci_driver *drv;
struct pci_dev *dev;
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 83ce1cdf5676..88397dd562d9 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1397,6 +1397,10 @@ int pci_add_dynid(struct pci_driver *drv,
unsigned long driver_data);
const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
struct pci_dev *dev);
+/* Reserved for Internal Red Hat use only */
+const struct pci_device_id *pci_hw_vendor_status(
+ const struct pci_device_id *ids,
+ struct pci_dev *dev);
int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
int pass);
--
2.26.2
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