From 5c3d14f76fccd14f0882fe2a11e19534a11a1674 Mon Sep 17 00:00:00 2001 From: Jayachandran C Date: Fri, 10 Jun 2016 21:55:10 +0200 Subject: [PATCH] PCI: Add parent device field to ECAM struct pci_config_window Add a parent device field to struct pci_config_window. The parent is not saved now, but will be useful to save it in some cases. For ACPI on ARM64, it can be used to setup ACPI companion and domain. Since the parent dev is in struct pci_config_window now, we need not pass it to the init function as a separate argument. Signed-off-by: Jayachandran C Signed-off-by: Bjorn Helgaas Acked-by: Lorenzo Pieralisi --- drivers/pci/ecam.c | 3 ++- drivers/pci/host/pci-thunder-pem.c | 3 ++- include/linux/pci-ecam.h | 4 ++-- 3 files changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/pci/ecam.c b/drivers/pci/ecam.c index 820e26b473f4..66e0d718472f 100644 --- a/drivers/pci/ecam.c +++ b/drivers/pci/ecam.c @@ -51,6 +51,7 @@ struct pci_config_window *pci_ecam_create(struct device *dev, if (!cfg) return ERR_PTR(-ENOMEM); + cfg->parent = dev; cfg->ops = ops; cfg->busr.start = busr->start; cfg->busr.end = busr->end; @@ -94,7 +95,7 @@ struct pci_config_window *pci_ecam_create(struct device *dev, } if (ops->init) { - err = ops->init(dev, cfg); + err = ops->init(cfg); if (err) goto err_exit; } diff --git a/drivers/pci/host/pci-thunder-pem.c b/drivers/pci/host/pci-thunder-pem.c index 5020d3d61ba7..91f6fc68d374 100644 --- a/drivers/pci/host/pci-thunder-pem.c +++ b/drivers/pci/host/pci-thunder-pem.c @@ -284,8 +284,9 @@ static int thunder_pem_config_write(struct pci_bus *bus, unsigned int devfn, return pci_generic_config_write(bus, devfn, where, size, val); } -static int thunder_pem_init(struct device *dev, struct pci_config_window *cfg) +static int thunder_pem_init(struct pci_config_window *cfg) { + struct device *dev = cfg->parent; resource_size_t bar4_start; struct resource *res_pem; struct thunder_pem_pci *pem_pci; diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h index 9878bebd45bb..7adad206b1f4 100644 --- a/include/linux/pci-ecam.h +++ b/include/linux/pci-ecam.h @@ -27,8 +27,7 @@ struct pci_config_window; struct pci_ecam_ops { unsigned int bus_shift; struct pci_ops pci_ops; - int (*init)(struct device *, - struct pci_config_window *); + int (*init)(struct pci_config_window *); }; /* @@ -45,6 +44,7 @@ struct pci_config_window { void __iomem *win; /* 64-bit single mapping */ void __iomem **winp; /* 32-bit per-bus mapping */ }; + struct device *parent;/* ECAM res was from this dev */ }; /* create and free pci_config_window */ -- GitLab