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authorMagnus Damm <damm@igel.co.jp>2009-06-17 05:04:04 +0000
committerPaul Mundt <lethal@linux-sh.org>2009-06-17 15:39:56 +0900
commitbe890a1a95fb439594e796f1968f86ee9f36e718 (patch)
tree89a1107bfae107e43f544fb2041ca13a92b946b5 /drivers/clocksource
parent4c7eb4ebc9001ce343969f58fa538e164e82000b (diff)
downloadtalos-op-linux-be890a1a95fb439594e796f1968f86ee9f36e718.tar.gz
talos-op-linux-be890a1a95fb439594e796f1968f86ee9f36e718.zip
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 <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/clocksource')
-rw-r--r--drivers/clocksource/sh_cmt.c3
-rw-r--r--drivers/clocksource/sh_tmu.c3
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c
index 7135f50082d6..2964f5f4a7ef 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 08e6ec2cb094..9ffb05f4095d 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);
}
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