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From: Niklas Schnelle <schnelle@linux.ibm.com>
To: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	"Oliver O'Halloran" <oohall@gmail.com>,
	linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-s390@vger.kernel.org, linux-arch@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 1/1] powerpc: Drop superfluous pci_dev_is_added() calls
Date: Fri, 10 Sep 2021 16:19:40 +0200	[thread overview]
Message-ID: <20210910141940.2598035-2-schnelle@linux.ibm.com> (raw)
In-Reply-To: <20210910141940.2598035-1-schnelle@linux.ibm.com>

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@linux.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


  reply	other threads:[~2021-09-10 14:19 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-10 14:19 [PATCH 0/1] Arch use of pci_dev_is_added() Niklas Schnelle
2021-09-10 14:19 ` Niklas Schnelle [this message]
2021-09-11 11:09   ` [PATCH 1/1] powerpc: Drop superfluous pci_dev_is_added() calls Michael Ellerman
2021-09-13 14:58     ` Oliver O'Halloran
2021-09-14 19:31   ` Bjorn Helgaas
2021-09-15  0:23     ` Michael Ellerman
2021-10-11 12:06 ` [PATCH 0/1] Arch use of pci_dev_is_added() Michael Ellerman

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