[RFC PATCH V5 1/5] PCI: Embed pci_ecam_ops in pci_config_window structure
From: Tomasz Nowicki <hidden>
Date: 2016-08-08 13:06:01
Also in:
linux-acpi, linux-pci, lkml
Subsystem:
arm64 port (aarch64 architecture), pci subsystem, the rest · Maintainers:
Catalin Marinas, Will Deacon, Bjorn Helgaas, Linus Torvalds
pci_config_window keeps pointer to pci_ecam_ops and every time we want to deallocate pci_config_window (pci_ecam_free()) we need to make sure to free pci_ecam_ops in case it was dynamically allocated prior to pci_ecam_create() call. To avoid that extra effort, embed pci_ecam_ops in pci_config_window, instead of just a pointer. Signed-off-by: Tomasz Nowicki <redacted> To: Jayachandran C <redacted> --- arch/arm64/kernel/pci.c | 2 +- drivers/pci/ecam.c | 6 +++--- include/linux/pci-ecam.h | 2 +- 3 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
index acf3872..981e828 100644
--- a/arch/arm64/kernel/pci.c
+++ b/arch/arm64/kernel/pci.c@@ -183,7 +183,7 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) return NULL; } - acpi_pci_root_ops.pci_ops = &ri->cfg->ops->pci_ops; + acpi_pci_root_ops.pci_ops = &ri->cfg->ops.pci_ops; bus = acpi_pci_root_create(root, &acpi_pci_root_ops, &ri->common, ri->cfg); if (!bus)
diff --git a/drivers/pci/ecam.c b/drivers/pci/ecam.c
index 43ed08d..24242f0 100644
--- a/drivers/pci/ecam.c
+++ b/drivers/pci/ecam.c@@ -52,7 +52,7 @@ struct pci_config_window *pci_ecam_create(struct device *dev, return ERR_PTR(-ENOMEM); cfg->parent = dev; - cfg->ops = ops; + cfg->ops = *ops; cfg->busr.start = busr->start; cfg->busr.end = busr->end; cfg->busr.flags = IORESOURCE_BUS;
@@ -138,7 +138,7 @@ void __iomem *pci_ecam_map_bus(struct pci_bus *bus, unsigned int devfn, int where) { struct pci_config_window *cfg = bus->sysdata; - unsigned int devfn_shift = cfg->ops->bus_shift - 8; + unsigned int devfn_shift = cfg->ops.bus_shift - 8; unsigned int busn = bus->number; void __iomem *base;
@@ -149,7 +149,7 @@ void __iomem *pci_ecam_map_bus(struct pci_bus *bus, unsigned int devfn, if (per_bus_mapping) base = cfg->winp[busn]; else - base = cfg->win + (busn << cfg->ops->bus_shift); + base = cfg->win + (busn << cfg->ops.bus_shift); return base + (devfn << devfn_shift) + where; }
diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h
index 7adad20..0ce2920 100644
--- a/include/linux/pci-ecam.h
+++ b/include/linux/pci-ecam.h@@ -39,7 +39,7 @@ struct pci_config_window { struct resource res; struct resource busr; void *priv; - struct pci_ecam_ops *ops; + struct pci_ecam_ops ops; union { void __iomem *win; /* 64-bit single mapping */ void __iomem **winp; /* 32-bit per-bus mapping */
--
1.9.1