[PATCH 2/2, powerpc/powernv] powerpc/powernv: Tweak PCI_DEV_FLAGS_QUIET_PCI_REALIGN on/off during boot

Desnes A. Nunes do Rosario desnesn at linux.vnet.ibm.com
Thu Mar 15 03:34:55 AEDT 2018

Turn on PCI_DEV_FLAGS_QUIET_PCI_REALIGN flag on powernv's pci driver
to silent PCI realignment messages through a early stage hook, and turn
it off right before the pci device is enabled with a final stage hook.

Fixes: 38274637699 ("powerpc/powernv: Override pcibios_default_alignment() to force PCI devices to be page aligned")
Signed-off-by: Desnes A. Nunes do Rosario <desnesn at linux.vnet.ibm.com>
 arch/powerpc/platforms/powernv/pci.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index 69d102cbf48f..d28ce0899487 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -1108,6 +1108,20 @@ static void pnv_p7ioc_rc_quirk(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_IBM, 0x3b9, pnv_p7ioc_rc_quirk);
+/* Fixup that disables PCI realignment menssages for all PCI devices */
+static void disable_realign_menssages(struct pci_dev *dev)
+	dev->dev_flags |= PCI_DEV_FLAGS_QUIET_PCI_REALIGN;
+DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, disable_realign_menssages);
+/* Fixup that enables PCI realignment messages for all PCI devices */
+static void enable_realign_menssages(struct pci_dev *dev)
+	dev->dev_flags ^= PCI_DEV_FLAGS_QUIET_PCI_REALIGN;
+DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, enable_realign_menssages);
 void __init pnv_pci_init(void)
 	struct device_node *np;

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