diff options
| author | Frank Li <Frank.Li@nxp.com> | 2025-03-15 15:15:36 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2025-03-17 14:18:14 -0500 |
| commit | 8f4a489b370e6612700aa16b9e4373b2d85d7503 (patch) | |
| tree | 94db9b7455411d8e63ec1d198b4a9ba32a2d1c18 /drivers/pci/controller/dwc | |
| parent | 2014c95afecee3e76ca4a56956a936e23283f05b (diff) | |
PCI: dwc: Use resource start as ioremap() input in dw_pcie_pme_turn_off()
The msg_res region translates writes into PCIe Message TLPs. Previously we
mapped this region using atu.cpu_addr, the input address programmed into
the ATU.
"cpu_addr" is a misnomer because when a bus fabric translates addresses
between the CPU and the ATU, the ATU input address is different from the
CPU address. A future patch will rename "cpu_addr" and correct the value
to be the ATU input address instead of the CPU physical address.
Map the msg_res region before writing to it using the msg_res resource
start, a CPU physical address.
Link: https://lore.kernel.org/r/20250315201548.858189-2-helgaas@kernel.org
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/controller/dwc')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-designware-host.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index ffaded8f2df7..ae3fd2a5dbf8 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -908,7 +908,7 @@ static int dw_pcie_pme_turn_off(struct dw_pcie *pci) if (ret) return ret; - mem = ioremap(atu.cpu_addr, pci->region_align); + mem = ioremap(pci->pp.msg_res->start, pci->region_align); if (!mem) return -ENOMEM; |