From 8bcca26585585ae4b44d25d30f351ad0afa4976b Mon Sep 17 00:00:00 2001 From: Hou Zhiqiang Date: Tue, 13 Apr 2021 17:22:19 +0300 Subject: PCI: dwc: Move iATU detection earlier dw_pcie_ep_init() depends on the detected iATU region numbers to allocate the in/outbound window management bitmap. It fails after 281f1f99cf3a ("PCI: dwc: Detect number of iATU windows"). Move the iATU region detection into a new function, move the detection to the very beginning of dw_pcie_host_init() and dw_pcie_ep_init(). Also remove it from the dw_pcie_setup(), since it's more like a software initialization step than hardware setup. Link: https://lore.kernel.org/r/20210125044803.4310-1-Zhiqiang.Hou@nxp.com Link: https://lore.kernel.org/linux-pci/20210407131255.702054-1-dmitry.baryshkov@linaro.org Link: https://lore.kernel.org/r/20210413142219.2301430-1-dmitry.baryshkov@linaro.org Fixes: 281f1f99cf3a ("PCI: dwc: Detect number of iATU windows") Tested-by: Kunihiko Hayashi Tested-by: Marek Szyprowski Tested-by: Manivannan Sadhasivam Signed-off-by: Hou Zhiqiang [DB: moved dw_pcie_iatu_detect to happen after host_init callback] Signed-off-by: Dmitry Baryshkov Signed-off-by: Lorenzo Pieralisi Reviewed-by: Rob Herring Cc: stable@vger.kernel.org # v5.11+ Cc: Marek Szyprowski --- drivers/pci/controller/dwc/pcie-designware-host.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/pci/controller/dwc/pcie-designware-host.c') diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index e6c274f4485c..a608ae1fad57 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -398,6 +398,7 @@ int dw_pcie_host_init(struct pcie_port *pp) if (ret) goto err_free_msi; } + dw_pcie_iatu_detect(pci); dw_pcie_setup_rc(pp); -- cgit