arc: Add virt_to_phys() stub

Commit cf7c93cdd755 "usb: ehci: Implement V2P mapping"
introduced usage of virt_to_phys() in ehci-hcd.

Since there was no implementation of virt_to_phys() for ARC
compilation of the ehci-generic driver failed.

This change adds virt_to_phys() stub for ARC so now
USB driver for AXS101 board could be built again.

Signed-off-by: Alexey Brodkin <[email protected]>
Cc: Daniel Schwierzeck <[email protected]>
Cc: Hans de Goede <[email protected]>
Acked-by: Marek Vasut <[email protected]>

diff --git a/arch/arc/include/asm/io.h b/arch/arc/include/asm/io.h
index 281682c8b45abdfb6b19546c91187569c31185d3..b6f7724931ceab6dd674b56920e9134a4fe62c28 100644 (file)
--- a/arch/arc/include/asm/io.h
+++ b/arch/arc/include/asm/io.h
@@ -239,4 +239,9 @@ static inline int __raw_writesl(unsigned int addr, void *data, int longlen)
 #define setbits_8(addr, set) setbits(8, addr, set)
 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
 
+static inline phys_addr_t virt_to_phys(void *vaddr)
+{
+       return (phys_addr_t)((unsigned long)vaddr);
+}
+
 #endif /* __ASM_ARC_IO_H */