From: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
pci_probe_only is set on ppc64 to prevent resource re-allocation
by the core. It's meant to be used in very specific circumstances
such as when operating under a hypervisor that may prevent such
re-allocation.
Instead of default to 1, we make it default to 0 and explicitly
set it in the few cases where we need it.
This fixes FSL PCI which wants it clear among others.
Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
---
arch/powerpc/kernel/pci_64.c | 2 +-
arch/powerpc/platforms/powermac/pci.c | 3 ---
arch/powerpc/platforms/powernv/pci.c | 3 ---
arch/powerpc/platforms/pseries/setup.c | 3 +++
arch/powerpc/platforms/wsp/wsp_pci.c | 1 -
5 files changed, 4 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 3318d39..f627eb7 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -33,7 +33,7 @@
#include <asm/machdep.h>
#include <asm/ppc-pci.h>
-unsigned long pci_probe_only = 1;
+unsigned long pci_probe_only = 0;
/* pci_io_base -- the base address from which io bars are offsets.
* This is the lowest I/O base address (so bar values are always positive),
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index 31a7d3a..43bbe1b 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -1059,9 +1059,6 @@ void __init pmac_pci_init(void)
}
/* pmac_check_ht_link(); */
- /* We can allocate missing resources if any */
- pci_probe_only = 0;
-
#else /* CONFIG_PPC64 */
init_p2pbridge();
init_second_ohare();
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index a70bc1e..a053f4f 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -557,9 +557,6 @@ void __init pnv_pci_init(void)
pci_set_flags(PCI_CAN_SKIP_ISA_ALIGN);
- /* We do not want to just probe */
- pci_probe_only = 0;
-
/* OPAL absent, try POPAL first then RTAS detection of PHBs */
if (!firmware_has_feature(FW_FEATURE_OPAL)) {
#ifdef CONFIG_PPC_POWERNV_RTAS
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index f79f127..386e265 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -380,6 +380,9 @@ static void __init pSeries_setup_arch(void)
fwnmi_init();
+ /* By default, only probe PCI (can be overriden by rtas_pci */
+ pci_probe_only = 1;
+
/* Find and initialize PCI host bridges */
init_pci_config_tokens();
find_and_init_phbs();
diff --git a/arch/powerpc/platforms/wsp/wsp_pci.c b/arch/powerpc/platforms/wsp/wsp_pci.c
index e0262cd..299157a 100644
--- a/arch/powerpc/platforms/wsp/wsp_pci.c
+++ b/arch/powerpc/platforms/wsp/wsp_pci.c
@@ -682,7 +682,6 @@ static int __init wsp_setup_one_phb(struct device_node *np)
/* XXX Force re-assigning of everything for now */
pci_add_flags(PCI_REASSIGN_ALL_BUS | PCI_REASSIGN_ALL_RSRC |
PCI_ENABLE_PROC_DOMAINS);
- pci_probe_only = 0;
/* Calculate how the TCE space is divided */
phb->dma32_base = 0;
--
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