+ a_uint32_t tsf_lower, tsf_upper1, tsf_upper2;
+ a_int32_t i;
+
+ tsf_upper1 = ioread32_mac(AR_TSF_U32);
+ for (i = 0; i < ATH9K_HTC_MAX_TSF_READ; i++) {
+ tsf_lower = ioread32_mac(AR_TSF_L32);
+ tsf_upper2 = ioread32_mac(AR_TSF_U32);
+ if (tsf_upper2 == tsf_upper1)
+ break;
+ tsf_upper1 = tsf_upper2;
+ }