ARM/PCI: Remove unused fields from struct hw_pci

The msi_ctrl, io_optional and align_resource fields in struct hw_pci are
currently unused by arm/mach PCI host controller drivers and we won't
be adding any new users.

Remove them and related code.

Link: https://lore.kernel.org/r/20200904141607.4066-1-lorenzo.pieralisi@arm.com
Link: https://lore.kernel.org/r/20200916103045.28651-1-lorenzo.pieralisi@arm.comSigned-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>

arch/arm/include/asm/mach/pci.h

@@ -17,10 +17,8 @@ struct pci_host_bridge;
 struct device;
 
 struct hw_pci {
-	struct msi_controller *msi_ctrl;
 	struct pci_ops	*ops;
 	int		nr_controllers;
-	unsigned int	io_optional:1;
 	void		**private_data;
 	int		(*setup)(int nr, struct pci_sys_data *);
 	int		(*scan)(int nr, struct pci_host_bridge *);
@@ -28,11 +26,6 @@ struct hw_pci {
 	void		(*postinit)(void);
 	u8		(*swizzle)(struct pci_dev *dev, u8 *pin);
 	int		(*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
-	resource_size_t (*align_resource)(struct pci_dev *dev,
-					  const struct resource *res,
-					  resource_size_t start,
-					  resource_size_t size,
-					  resource_size_t align);
 };
 
 /*

arch/arm/kernel/bios32.c

@@ -394,8 +394,7 @@ static int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 	return irq;
 }
 
-static int pcibios_init_resource(int busnr, struct pci_sys_data *sys,
-				 int io_optional)
+static int pcibios_init_resource(int busnr, struct pci_sys_data *sys)
 {
 	int ret;
 	struct resource_entry *window;
@@ -405,14 +404,6 @@ static int pcibios_init_resource(int busnr, struct pci_sys_data *sys,
 			 &iomem_resource, sys->mem_offset);
 	}
 
-	/*
-	 * If a platform says I/O port support is optional, we don't add
-	 * the default I/O space.  The platform is responsible for adding
-	 * any I/O space it needs.
-	 */
-	if (io_optional)
-		return 0;
-
 	resource_list_for_each_entry(window, &sys->resources)
 		if (resource_type(window->res) == IORESOURCE_IO)
 			return 0;
@@ -462,7 +453,7 @@ static void pcibios_init_hw(struct device *parent, struct hw_pci *hw,
 
 		if (ret > 0) {
 
-			ret = pcibios_init_resource(nr, sys, hw->io_optional);
+			ret = pcibios_init_resource(nr, sys);
 			if (ret)  {
 				pci_free_host_bridge(bridge);
 				break;
@@ -480,9 +471,6 @@ static void pcibios_init_hw(struct device *parent, struct hw_pci *hw,
 				bridge->sysdata = sys;
 				bridge->busnr = sys->busnr;
 				bridge->ops = hw->ops;
-				bridge->msi = hw->msi_ctrl;
-				bridge->align_resource =
-						hw->align_resource;
 
 				ret = pci_scan_root_bus_bridge(bridge);
 			}