Only delay opal_rtc_read() when busy and are going to retry.
This has the advantage of possibly saving a massive 10ms off booting!
Kudos to Stewart for noticing.
Signed-off-by: Michael Neuling <mi...@neuling.org>
diff --git a/arch/powerpc/platforms/powernv/opal-rtc.c
b/arch/powerpc/platforms/powernv/opal-rtc.c
index 37dbee1..06511f3 100644
--- a/arch/powerpc/platforms/powernv/opal-rtc.c
+++ b/arch/powerpc/platforms/powernv/opal-rtc.c
@@ -51,7 +51,7 @@ unsigned long __init opal_get_boot_time(void)
rc = opal_rtc_read(&__y_m_d, &__h_m_s_ms);
if (rc == OPAL_BUSY_EVENT)
opal_poll_events(NULL);
- else
+ else if (rc == OPAL_BUSY)
mdelay(10);
}
if (rc != OPAL_SUCCESS)
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