There could be some device which will work only after adjusting their
"Max Packet Size" and/or "Max Read Request Size".
This modification will only be effective if proper 'pci=' bootargs is
passed.
Signed-off-by: Pratyush Anand <pratyush.anand@xxxxxx>
---
arch/arm/kernel/bios32.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
index 2555250..62d603f 100644
--- a/arch/arm/kernel/bios32.c
+++ b/arch/arm/kernel/bios32.c
@@ -490,6 +490,18 @@ void __init pci_common_init(struct hw_pci *hw)
struct pci_bus *bus = sys->bus;
if (!pci_has_flag(PCI_PROBE_ONLY)) {
+ struct pci_bus *child;
+
+ /*
+ * Set MPS and readrq size
+ */
+ list_for_each_entry(child, &bus->children, node) {
+ struct pci_dev *self = child->self;
+ if (!self)
+ continue;
+ pcie_bus_configure_settings(child,
+ self->pcie_mpss);
+ }
/*
* Size the bridge windows.
*/
--
1.7.5.4
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