linux-kernel - [PATCH 1/1] powerpc: Drop superfluous pci_dev_is

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Date:   Fri, 10 Sep 2021 16:19:40 +0200
From:   Niklas Schnelle <schnelle@...ux.ibm.com>
To:     Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        "Oliver O'Halloran" <oohall@...il.com>, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
        linux-arch@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH 1/1] powerpc: Drop superfluous pci_dev_is_added() calls

On powerpc, pci_dev_is_added() is called as part of SR-IOV fixups
that are done under pcibios_add_device() which in turn is only called in
pci_device_add() whih is called when a PCI device is scanned.

Now pci_dev_assign_added() is called in pci_bus_add_device() which is
only called after scanning the device. Thus pci_dev_is_added() is always
false and can be dropped.

Signed-off-by: Niklas Schnelle <schnelle@...ux.ibm.com>
---
 arch/powerpc/platforms/powernv/pci-sriov.c | 6 ------
 arch/powerpc/platforms/pseries/setup.c     | 3 +--
 2 files changed, 1 insertion(+), 8 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/pci-sriov.c b/arch/powerpc/platforms/powernv/pci-sriov.c
index 28aac933a439..deddbb233fde 100644
--- a/arch/powerpc/platforms/powernv/pci-sriov.c
+++ b/arch/powerpc/platforms/powernv/pci-sriov.c
@@ -9,9 +9,6 @@
 
 #include "pci.h"
 
-/* for pci_dev_is_added() */
-#include "../../../../drivers/pci/pci.h"
-
 /*
  * The majority of the complexity in supporting SR-IOV on PowerNV comes from
  * the need to put the MMIO space for each VF into a separate PE. Internally
@@ -228,9 +225,6 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev)
 
 void pnv_pci_ioda_fixup_iov(struct pci_dev *pdev)
 {
-	if (WARN_ON(pci_dev_is_added(pdev)))
-		return;
-
 	if (pdev->is_virtfn) {
 		struct pnv_ioda_pe *pe = pnv_ioda_get_pe(pdev);
 
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index f79126f16258..2188054470c1 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -74,7 +74,6 @@
 #include <asm/hvconsole.h>
 
 #include "pseries.h"
-#include "../../../../drivers/pci/pci.h"
 
 DEFINE_STATIC_KEY_FALSE(shared_processor);
 EXPORT_SYMBOL(shared_processor);
@@ -750,7 +749,7 @@ static void pseries_pci_fixup_iov_resources(struct pci_dev *pdev)
 	const int *indexes;
 	struct device_node *dn = pci_device_to_OF_node(pdev);
 
-	if (!pdev->is_physfn || pci_dev_is_added(pdev))
+	if (!pdev->is_physfn)
 		return;
 	/*Firmware must support open sriov otherwise dont configure*/
 	indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL);
-- 
2.25.1