openwrt/target/linux/cns3xxx/patches-4.14/130-Extend-PCIE_BUS_PEER2PEER-to-set-MRSS-128-to-fix-CNS3xxx-BM-DMA..patch
Koen Vandeputte f960490fc8 kernel: bump 4.14 to 4.14.60
Refreshed all patches

Removed upstreamed patches:
- 500-ext4-fix-check-to-prevent-initializing-reserved-inod.patch

Compile-tested on: cns3xxx, imx6, x86_64
Runtime-tested on: cns3xxx, imx6, x86_64

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2018-08-03 16:10:38 +02:00

24 lines
958 B
Diff

--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2305,7 +2305,8 @@ static void pcie_write_mrrs(struct pci_d
/* In the "safe" case, do not configure the MRRS. There appear to be
* issues with setting MRRS to 0 on a number of devices.
*/
- if (pcie_bus_config != PCIE_BUS_PERFORMANCE)
+ if (pcie_bus_config != PCIE_BUS_PERFORMANCE &&
+ pcie_bus_config != PCIE_BUS_PEER2PEER)
return;
/* For Max performance, the MRRS must be set to the largest supported
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -845,7 +845,7 @@ enum pcie_bus_config_types {
PCIE_BUS_DEFAULT, /* ensure MPS matches upstream bridge */
PCIE_BUS_SAFE, /* use largest MPS boot-time devices support */
PCIE_BUS_PERFORMANCE, /* use MPS and MRRS for best performance */
- PCIE_BUS_PEER2PEER, /* set MPS = 128 for all devices */
+ PCIE_BUS_PEER2PEER, /* set MPS and MRSS to 128 for all devices */
};
extern enum pcie_bus_config_types pcie_bus_config;