openwrt/target/linux/imx6/patches-4.9/200-disable-msi.patch
Tim Harvey 456bd95023 imx6: disable MSI interrupts
The IMX6 PCIe host controller does not fire legacy interrupts if MSI is
enabled. A patch is being worked on to enable MSI at runtime only when
it is needed but meanwhile this patch will disable MSI for the imx6 kernel.

This fixes the no interrupt issue on cards/drivers that use legacy interrupts
such as ath9k.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Tested-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2017-04-26 11:52:55 +02:00

23 lines
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Diff

The IMX6 PCIe host controller does not fire legacy interrupts when MSI is
enabled. A patch is being worked on upstream to only enable MSI at runtime
when needed, but until that is ready we will allow MSI to be disabled.
--- a/drivers/pci/host/Kconfig
+++ b/drivers/pci/host/Kconfig
@@ -51,7 +51,6 @@ config PCIE_DW_PLAT
config PCIE_DW
bool
- depends on PCI_MSI_IRQ_DOMAIN
config PCI_EXYNOS
bool "Samsung Exynos PCIe controller"
@@ -63,7 +62,6 @@ config PCI_EXYNOS
config PCI_IMX6
bool "Freescale i.MX6 PCIe controller"
depends on SOC_IMX6Q
- depends on PCI_MSI_IRQ_DOMAIN
select PCIEPORTBUS
select PCIE_DW