| Message ID | 20210614100617.28753-4-sergio.paracuellos@gmail.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | staging: mt7621-pci: define ralink PCI_IOBASE to avoid manually ranges parsing | expand |
diff --git a/drivers/staging/mt7621-dts/mt7621.dtsi b/drivers/staging/mt7621-dts/mt7621.dtsi index ecfe2f2cf75a..f15ea61851b2 100644 --- a/drivers/staging/mt7621-dts/mt7621.dtsi +++ b/drivers/staging/mt7621-dts/mt7621.dtsi @@ -489,7 +489,7 @@ pcie: pcie@1e140000 { device_type = "pci"; - ranges = <0x02000000 0 0x00000000 0x60000000 0 0x10000000>, /* pci memory */ + ranges = <0x02000000 0 0x60000000 0x60000000 0 0x10000000>, /* pci memory */ <0x01000000 0 0x00000000 0x1e160000 0 0x00010000>; /* io space */ #interrupt-cells = <1>;
Driver code call 'devm_of_pci_get_host_bridge_resources' to get resources and properly fill 'bridge->windows' and 'bridge->dma_ranges'. After parsing the ranges and store as resources, at the end it makes a call to pci function 'pci_add_resource_offset' to set the offset for the memory resource. To calculate offset, resource start address subtracts pci address of the range. MT7621 does not need any offset for the memory resource. Moreover, setting an offset got into 'WARN_ON' calls from pci devices driver code. Until now memory range pci_addr was being '0x00000000' and res->start is '0x60000000' but becase pci controller driver was manually setting resources and adding them using pci function 'pci_add_resource' where a zero is passed as offset, things was properly working. Since PCI_IOBASE is defined now for ralink we don't set nothing manually anymore so we have to properly fix PCI address for this range to make things work and the new pci address must be set to '0x60000000'. Doing in this way the subtract result obtain zero as offset and pci device driver code properly works. Fixes: d59578da2bb8 ("staging: mt7621-dts: add dts files") Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> --- drivers/staging/mt7621-dts/mt7621.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)