提交 4c2e6f6a 编写于 作者: M Matt Mackall 提交者: Linus Torvalds

[PATCH] RTC: Remove RTC UIP synchronization on Alpha

The sync may still be needed for CPU clock calibration but we don't sync in
the regular case.
Signed-off-by: NMatt Mackall <mpm@selenic.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 356a9ce1
...@@ -314,10 +314,11 @@ time_init(void) ...@@ -314,10 +314,11 @@ time_init(void)
if (!est_cycle_freq) if (!est_cycle_freq)
est_cycle_freq = validate_cc_value(calibrate_cc_with_pit()); est_cycle_freq = validate_cc_value(calibrate_cc_with_pit());
cc1 = rpcc_after_update_in_progress(); cc1 = rpcc();
/* Calibrate CPU clock -- attempt #2. */ /* Calibrate CPU clock -- attempt #2. */
if (!est_cycle_freq) { if (!est_cycle_freq) {
cc1 = rpcc_after_update_in_progress();
cc2 = rpcc_after_update_in_progress(); cc2 = rpcc_after_update_in_progress();
est_cycle_freq = validate_cc_value(cc2 - cc1); est_cycle_freq = validate_cc_value(cc2 - cc1);
cc1 = cc2; cc1 = cc2;
......
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