[PATCH 1/2] ARM: delay: set loops_per_jiffy when moving to timer-based loop
From: Will Deacon <hidden>
Date: 2012-08-24 14:13:23
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
From: Will Deacon <hidden>
Date: 2012-08-24 14:13:23
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
The delay functions may be called by some platforms between switching to the timer-based delay loop but before calibration. In this case, the initial loops_per_jiffy may not be suitable for the timer (although a compromise may be achievable) and delay times may be considered too inaccurate. This patch updates loops_per_jiffy when switching to the timer-based delay loop so that delays are consistent prior to calibration. Signed-off-by: Will Deacon <redacted> --- arch/arm/lib/delay.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/arm/lib/delay.c b/arch/arm/lib/delay.c
index d6dacc6..395d5fb 100644
--- a/arch/arm/lib/delay.c
+++ b/arch/arm/lib/delay.c@@ -59,6 +59,7 @@ void __init init_current_timer_delay(unsigned long freq) { pr_info("Switching to timer-based delay loop\n"); lpj_fine = freq / HZ; + loops_per_jiffy = lpj_fine; arm_delay_ops.delay = __timer_delay; arm_delay_ops.const_udelay = __timer_const_udelay; arm_delay_ops.udelay = __timer_udelay;
--
1.7.4.1