arm: PCI: Set policy flag for full resource reassignment

All arch/arm platforms effectively want a full PCI resource reassignment
done by the kernel. This happens as a side effect of resource management
calls done directly by the host bridge drivers or by the old style
pci_common_init_dev() function.

Make it explicit so those policies can be moved out of the host bridge
drivers

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
index ed46ca69813d3a..e6d130d4208e33 100644
--- a/arch/arm/kernel/bios32.c
+++ b/arch/arm/kernel/bios32.c
@@ -522,6 +522,19 @@ static void pcibios_init_hw(struct device *parent, struct hw_pci *hw,
 	}
 }
 
+/*
+ * Set global PCI policy for both old-style (hw_pci based) platforms
+ * and new-style (drivers/pci/controller DT based) platforms.
+ */
+static int pci_init_policy(void)
+{
+	/* By default, all arm platforms reassign all PCI resources */
+	pci_set_flags(PCI_REASSIGN_ALL_RSRC);
+
+	return 0;
+}
+arch_initcall(pci_init_policy);
+
 void pci_common_init_dev(struct device *parent, struct hw_pci *hw)
 {
 	struct pci_sys_data *sys;