From ff529a9307a03ec03ed9751da053b57149300053 Mon Sep 17 00:00:00 2001 From: Christian Bruel Date: Fri, 14 Nov 2025 09:08:05 +0100 Subject: [PATCH] PCI: stm32: Fix EP page_size alignment pci_epc_mem_alloc_addr() allocates a CPU address from the ATU window phys base and a page number. Set the ep->page_size so the resulting CPU address is correctly aligned with the ATU required alignment. Fixes: 151f3d29baf4 ("PCI: stm32-ep: Add PCIe Endpoint support for STM32MP25") Signed-off-by: Christian Bruel [mani: added fixes tag] Signed-off-by: Manivannan Sadhasivam Signed-off-by: Bjorn Helgaas Link: https://patch.msgid.link/20251114-atu_align_ep-v1-1-88da5366fa04@foss.st.com --- drivers/pci/controller/dwc/pcie-stm32-ep.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-stm32-ep.c b/drivers/pci/controller/dwc/pcie-stm32-ep.c index faa6433a784f3..7d48038d576d9 100644 --- a/drivers/pci/controller/dwc/pcie-stm32-ep.c +++ b/drivers/pci/controller/dwc/pcie-stm32-ep.c @@ -214,6 +214,8 @@ static int stm32_add_pcie_ep(struct stm32_pcie *stm32_pcie, ep->ops = &stm32_pcie_ep_ops; + ep->page_size = stm32_pcie_epc_features.align; + ret = dw_pcie_ep_init(ep); if (ret) { dev_err(dev, "Failed to initialize ep: %d\n", ret); -- 2.47.3