diff options
Diffstat (limited to 'drivers/platform/x86/ibm_rtl.c')
| -rw-r--r-- | drivers/platform/x86/ibm_rtl.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/platform/x86/ibm_rtl.c b/drivers/platform/x86/ibm_rtl.c index 94a114aa8e28..b1396e5b2953 100644 --- a/drivers/platform/x86/ibm_rtl.c +++ b/drivers/platform/x86/ibm_rtl.c @@ -81,6 +81,19 @@ static void __iomem *rtl_cmd_addr; static u8 rtl_cmd_type; static u8 rtl_cmd_width; +#ifndef readq +static inline __u64 readq(const volatile void __iomem *addr) +{ + const volatile u32 __iomem *p = addr; + u32 low, high; + + low = readl(p); + high = readl(p + 1); + + return low + ((u64)high << 32); +} +#endif + static void __iomem *rtl_port_map(phys_addr_t addr, unsigned long len) { if (rtl_cmd_type == RTL_ADDR_TYPE_MMIO) |