This is a note to let you know that I've just added the patch titled
powerpc/powernv: Honor the generic "no_64bit_msi" flag
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-powernv-honor-the-generic-no_64bit_msi-flag.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 360743814c4082515581aa23ab1d8e699e1fbe88 Mon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Date: Tue, 7 Oct 2014 16:12:36 +1100
Subject: powerpc/powernv: Honor the generic "no_64bit_msi" flag
From: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
commit 360743814c4082515581aa23ab1d8e699e1fbe88 upstream.
Instead of the arch specific quirk which we are deprecating
and that drivers don't understand.
Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/platforms/powernv/pci-ioda.c | 3 +--
arch/powerpc/platforms/powernv/pci.c | 4 ++--
2 files changed, 3 insertions(+), 4 deletions(-)
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -902,7 +902,6 @@ static int pnv_pci_ioda_msi_setup(struct
unsigned int is_64, struct msi_msg *msg)
{
struct pnv_ioda_pe *pe = pnv_ioda_get_pe(dev);
- struct pci_dn *pdn = pci_get_pdn(dev);
struct irq_data *idata;
struct irq_chip *ichip;
unsigned int xive_num = hwirq - phb->msi_base;
@@ -918,7 +917,7 @@ static int pnv_pci_ioda_msi_setup(struct
return -ENXIO;
/* Force 32-bit MSI on some broken devices */
- if (pdn && pdn->force_32bit_msi)
+ if (dev->no_64bit_msi)
is_64 = 0;
/* Assign XIVE to PE */
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -1,3 +1,4 @@
+
/*
* Support PCI/PCIe on PowerNV platforms
*
@@ -50,9 +51,8 @@ static int pnv_msi_check_device(struct p
{
struct pci_controller *hose = pci_bus_to_host(pdev->bus);
struct pnv_phb *phb = hose->private_data;
- struct pci_dn *pdn = pci_get_pdn(pdev);
- if (pdn && pdn->force_32bit_msi && !phb->msi32_support)
+ if (pdev->no_64bit_msi && !phb->msi32_support)
return -ENODEV;
return (phb && phb->msi_bmp.bitmap) ? 0 : -ENODEV;
Patches currently in stable-queue which might be from benh@xxxxxxxxxxxxxxxxxxx are
queue-3.14/powerpc-powernv-honor-the-generic-no_64bit_msi-flag.patch
queue-3.14/of-base-fix-powerpc-address-parsing-hack.patch
queue-3.14/powerpc-pseries-honor-the-generic-no_64bit_msi-flag.patch
queue-3.14/gpu-radeon-set-flag-to-indicate-broken-64-bit-msi.patch
queue-3.14/pci-msi-add-device-flag-indicating-that-64-bit-msis-don-t-work.patch
--
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