The patch titled
m68knommu: fix ColdFire timer off by 1
has been removed from the -mm tree. Its filename was
m68knommu-fix-coldfire-timer-off-by-1.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: m68knommu: fix ColdFire timer off by 1
From: Greg Ungerer <gerg@xxxxxxxxxxxx>
The coldfire timer runs from 0 to TRR included, then 0 again and so on. It
counts thus actually TRR + 1 steps for 1 tick, not TRR. Fix that.
Signed-off-by: Philippe De Muyter <phdm@xxxxxxxxx>
Signed-off-by: Greg Ungerer <gerg@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/m68knommu/platform/5307/timers.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)
diff -puN arch/m68knommu/platform/5307/timers.c~m68knommu-fix-coldfire-timer-off-by-1 arch/m68knommu/platform/5307/timers.c
--- a/arch/m68knommu/platform/5307/timers.c~m68knommu-fix-coldfire-timer-off-by-1
+++ a/arch/m68knommu/platform/5307/timers.c
@@ -62,10 +62,13 @@ void coldfire_tick(void)
/***************************************************************************/
+static int ticks_per_intr;
+
void coldfire_timer_init(irq_handler_t handler)
{
__raw_writew(MCFTIMER_TMR_DISABLE, TA(MCFTIMER_TMR));
- __raw_writetrr(((MCF_BUSCLK / 16) / HZ), TA(MCFTIMER_TRR));
+ ticks_per_intr = (MCF_BUSCLK / 16) / HZ;
+ __raw_writetrr(ticks_per_intr - 1, TA(MCFTIMER_TRR));
__raw_writew(MCFTIMER_TMR_ENORI | MCFTIMER_TMR_CLK16 |
MCFTIMER_TMR_RESTART | MCFTIMER_TMR_ENABLE, TA(MCFTIMER_TMR));
@@ -81,11 +84,10 @@ void coldfire_timer_init(irq_handler_t h
unsigned long coldfire_timer_offset(void)
{
- unsigned long trr, tcn, offset;
+ unsigned long tcn, offset;
tcn = __raw_readw(TA(MCFTIMER_TCN));
- trr = __raw_readtrr(TA(MCFTIMER_TRR));
- offset = (tcn * (1000000 / HZ)) / trr;
+ offset = ((tcn + 1) * (1000000 / HZ)) / ticks_per_intr;
/* Check if we just wrapped the counters and maybe missed a tick */
if ((offset < (1000000 / HZ / 2)) && mcf_timerirqpending(1))
_
Patches currently in -mm which might be from gerg@xxxxxxxxxxxx are
origin.patch
git-arm.patch
drivers-mtd-maps-nettelc-possible-cleanups.patch
nommu-stub-expand_stack-for-nommu-case.patch
m68knommu-use-trhead_size-instead-of-hard-constant.patch
m68knommu-remove-cruft-from-setup-code.patch
m68knommu-remove-old-cache-management-cruft-from-mm-code.patch
-
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