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| author | Koen Vandeputte <koen.vandeputte@ncentric.com> | 2019-01-28 10:05:10 +0100 |
|---|---|---|
| committer | Koen Vandeputte <koen.vandeputte@ncentric.com> | 2019-01-28 18:17:32 +0100 |
| commit | c6bebe1a9496f9888e451a7f8aea6db916c0bdf2 (patch) | |
| tree | 3072aa2d1d3c9af9a92eab2eefc0bafe0db754bc /target/linux/cns3xxx/patches-4.19/130-Extend-PCIE_BUS_PEER2PEER-to-set-MRSS-128-to-fix-CNS3xxx-BM-DMA..patch | |
| parent | 037800270bbb103819efce3f258bd0d7986b68a0 (diff) | |
| download | upstream-c6bebe1a9496f9888e451a7f8aea6db916c0bdf2.tar.gz upstream-c6bebe1a9496f9888e451a7f8aea6db916c0bdf2.tar.bz2 upstream-c6bebe1a9496f9888e451a7f8aea6db916c0bdf2.zip | |
cns3xxx: add support for kernel 4.19
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
Diffstat (limited to 'target/linux/cns3xxx/patches-4.19/130-Extend-PCIE_BUS_PEER2PEER-to-set-MRSS-128-to-fix-CNS3xxx-BM-DMA..patch')
| -rw-r--r-- | target/linux/cns3xxx/patches-4.19/130-Extend-PCIE_BUS_PEER2PEER-to-set-MRSS-128-to-fix-CNS3xxx-BM-DMA..patch | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/target/linux/cns3xxx/patches-4.19/130-Extend-PCIE_BUS_PEER2PEER-to-set-MRSS-128-to-fix-CNS3xxx-BM-DMA..patch b/target/linux/cns3xxx/patches-4.19/130-Extend-PCIE_BUS_PEER2PEER-to-set-MRSS-128-to-fix-CNS3xxx-BM-DMA..patch new file mode 100644 index 0000000000..4b4f0e4f0a --- /dev/null +++ b/target/linux/cns3xxx/patches-4.19/130-Extend-PCIE_BUS_PEER2PEER-to-set-MRSS-128-to-fix-CNS3xxx-BM-DMA..patch @@ -0,0 +1,23 @@ +--- a/drivers/pci/probe.c ++++ b/drivers/pci/probe.c +@@ -2619,7 +2619,8 @@ 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; + + /* +--- a/include/linux/pci.h ++++ b/include/linux/pci.h +@@ -866,7 +866,7 @@ 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; |