staging: mt7621-pci: remove dead code derived to not use custom reads and writes

Driver is using now pci subsystem generics reads and writes and requesting
bus resources without using legacy code functions. Because of this there is
a lot of dead code that can be removed.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Tested-by: NeilBrown <neil@brown.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-pci/pci-mt7621.c

@@ -123,15 +123,6 @@
 	*(volatile u32 *)(RALINK_PCI_BASE+(ofs)) = cpu_to_le32(data)
 #define MV_READ(ofs, data)	\
 	*(data) = le32_to_cpu(*(volatile u32 *)(RALINK_PCI_BASE+(ofs)))
-#define MV_WRITE_16(ofs, data)	\
-	*(volatile u16 *)(RALINK_PCI_BASE+(ofs)) = cpu_to_le16(data)
-#define MV_READ_16(ofs, data)	\
-	*(data) = le16_to_cpu(*(volatile u16 *)(RALINK_PCI_BASE+(ofs)))
-
-#define MV_WRITE_8(ofs, data)	\
-	*(volatile u8 *)(RALINK_PCI_BASE+(ofs)) = data
-#define MV_READ_8(ofs, data)	\
-	*(data) = *(volatile u8 *)(RALINK_PCI_BASE+(ofs))
 
 #define RALINK_PCI_MM_MAP_BASE		0x60000000
 #define RALINK_PCI_IO_MAP_BASE		0x1e160000
@@ -176,13 +167,6 @@
 #define MEMORY_BASE 0x0
 static int pcie_link_status = 0;
 
-#define PCI_ACCESS_READ_1  0
-#define PCI_ACCESS_READ_2  1
-#define PCI_ACCESS_READ_4  2
-#define PCI_ACCESS_WRITE_1 3
-#define PCI_ACCESS_WRITE_2 4
-#define PCI_ACCESS_WRITE_4 5
-
 /**
  * struct mt7621_pcie_port - PCIe port information
  * @base: IO mapped register base
@@ -227,118 +211,6 @@ static inline u32 mt7621_pci_get_cfgaddr(unsigned int bus, unsigned int slot,
 		(func << 8) | (where & 0xfc) | 0x80000000;
 }
 
-static int config_access(unsigned char access_type, struct pci_bus *bus,
-			unsigned int devfn, unsigned int where, u32 *data)
-{
-	unsigned int slot = PCI_SLOT(devfn);
-	u8 func = PCI_FUNC(devfn);
-	u32 address_reg, data_reg;
-	unsigned int address;
-
-	address_reg = RALINK_PCI_CONFIG_ADDR;
-	data_reg = RALINK_PCI_CONFIG_DATA_VIRTUAL_REG;
-
-	address = mt7621_pci_get_cfgaddr(bus->number, slot, func, where);
-
-	MV_WRITE(address_reg, address);
-
-	switch (access_type) {
-	case PCI_ACCESS_WRITE_1:
-		MV_WRITE_8(data_reg+(where&0x3), *data);
-		break;
-	case PCI_ACCESS_WRITE_2:
-		MV_WRITE_16(data_reg+(where&0x3), *data);
-		break;
-	case PCI_ACCESS_WRITE_4:
-		MV_WRITE(data_reg, *data);
-		break;
-	case PCI_ACCESS_READ_1:
-		MV_READ_8(data_reg+(where&0x3), data);
-		break;
-	case PCI_ACCESS_READ_2:
-		MV_READ_16(data_reg+(where&0x3), data);
-		break;
-	case PCI_ACCESS_READ_4:
-		MV_READ(data_reg, data);
-		break;
-	default:
-		printk("no specify access type\n");
-		break;
-	}
-	return 0;
-}
-
-static int
-read_config_byte(struct pci_bus *bus, unsigned int devfn, int where, u8 *val)
-{
-	return config_access(PCI_ACCESS_READ_1, bus, devfn, (unsigned int)where, (u32 *)val);
-}
-
-static int
-read_config_word(struct pci_bus *bus, unsigned int devfn, int where, u16 *val)
-{
-	return config_access(PCI_ACCESS_READ_2, bus, devfn, (unsigned int)where, (u32 *)val);
-}
-
-static int
-read_config_dword(struct pci_bus *bus, unsigned int devfn, int where, u32 *val)
-{
-	return config_access(PCI_ACCESS_READ_4, bus, devfn, (unsigned int)where, (u32 *)val);
-}
-
-static int
-write_config_byte(struct pci_bus *bus, unsigned int devfn, int where, u8 val)
-{
-	if (config_access(PCI_ACCESS_WRITE_1, bus, devfn, (unsigned int)where, (u32 *)&val))
-		return -1;
-
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static int
-write_config_word(struct pci_bus *bus, unsigned int devfn, int where, u16 val)
-{
-	if (config_access(PCI_ACCESS_WRITE_2, bus, devfn, where, (u32 *)&val))
-		return -1;
-
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static int
-write_config_dword(struct pci_bus *bus, unsigned int devfn, int where, u32 val)
-{
-	if (config_access(PCI_ACCESS_WRITE_4, bus, devfn, where, &val))
-		return -1;
-
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static int
-pci_config_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val)
-{
-	switch (size) {
-	case 1:
-		return read_config_byte(bus, devfn, where, (u8 *) val);
-	case 2:
-		return read_config_word(bus, devfn, where, (u16 *) val);
-	default:
-		return read_config_dword(bus, devfn, where, val);
-	}
-}
-
-static int
-pci_config_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val)
-{
-	switch (size) {
-	case 1:
-		return write_config_byte(bus, devfn, where, (u8) val);
-	case 2:
-		return write_config_word(bus, devfn, where, (u16) val);
-	default:
-		return write_config_dword(bus, devfn, where, val);
-	}
-}
-
 static void __iomem *mt7621_pcie_map_bus(struct pci_bus *bus,
 					 unsigned int devfn, int where)
 {