[PATCH v9 1/7] PCI: dwc: Use resource start as iomap() input in dw_pcie_pme_turn_off()
From: Frank Li <Frank.Li@nxp.com>
Date: 2025-01-28 22:08:30
Also in:
imx, linux-arm-kernel, linux-pci, lkml
Subsystem:
pci driver for synopsys designware, pci native host bridge and endpoint drivers, pci subsystem, the rest · Maintainers:
Jingoo Han, Manivannan Sadhasivam, Lorenzo Pieralisi, Krzysztof Wilczyński, Bjorn Helgaas, Linus Torvalds
Pass resource start as the input argument to iomap() instead of atu.cpu_address in dw_pcie_pme_turn_off(). While atu.cpu_address happens to be the same here, it actually represents the parent bus address before ATU, which may not always align with the CPU address. Using resource start ensures correctness and clarity. Signed-off-by: Frank Li <Frank.Li@nxp.com> --- change from v9 to v10 - new patch --- drivers/pci/controller/dwc/pcie-designware-host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index ffaded8f2df7b..ae3fd2a5dbf85 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;
--
2.34.1