From be890a1a95fb439594e796f1968f86ee9f36e718 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Wed, 17 Jun 2009 05:04:04 +0000 Subject: sh: turn off irqs when disabling CMT/TMU timers 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 Signed-off-by: Paul Mundt --- drivers/clocksource/sh_cmt.c | 3 +++ drivers/clocksource/sh_tmu.c | 3 +++ 2 files changed, 6 insertions(+) (limited to 'drivers/clocksource') diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c index 7135f50082d..2964f5f4a7e 100644 --- a/drivers/clocksource/sh_cmt.c +++ b/drivers/clocksource/sh_cmt.c @@ -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); } diff --git a/drivers/clocksource/sh_tmu.c b/drivers/clocksource/sh_tmu.c index 08e6ec2cb09..9ffb05f4095 100644 --- a/drivers/clocksource/sh_tmu.c +++ b/drivers/clocksource/sh_tmu.c @@ -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); } -- cgit v1.2.3