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sh: turn off irqs when disabling CMT/TMU timers

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Modify the CMT and TMU drivers to disable interrupts when
disabling the timer. Only using start/stop bits is not
enough.

This fixes a bootup hang on Migo-R when the CMT is replaced
by TMU for clockevents but the CMT keeps on delivering irqs
even though the timer start bit is off.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2009-06-17 05:04:04 +00:00 committed by Paul Mundt
parent 4c7eb4ebc9
commit be890a1a95
2 changed files with 6 additions and 0 deletions
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3
drivers/clocksource/sh_cmt.c
View file

@ -184,6 +184,9 @@ static void sh_cmt_disable(struct sh_cmt_priv *p)
/* disable channel */
sh_cmt_start_stop_ch(p, 0);
/* disable interrupts in CMT block */
sh_cmt_write(p, CMCSR, 0);
/* stop clock */
clk_disable(p->clk);
}

3
drivers/clocksource/sh_tmu.c
View file

@ -138,6 +138,9 @@ static void sh_tmu_disable(struct sh_tmu_priv *p)
/* disable channel */
sh_tmu_start_stop_ch(p, 0);
/* disable interrupts in TMU block */
sh_tmu_write(p, TCR, 0x0000);
/* stop clock */
clk_disable(p->clk);
}