diff options
| author | Magnus Damm <damm@igel.co.jp> | 2009-06-17 05:04:04 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-06-17 15:39:56 +0900 |
| commit | be890a1a95fb439594e796f1968f86ee9f36e718 (patch) | |
| tree | 89a1107bfae107e43f544fb2041ca13a92b946b5 /drivers/clocksource/sh_cmt.c | |
| parent | 4c7eb4ebc9001ce343969f58fa538e164e82000b (diff) | |
| download | lwn-be890a1a95fb439594e796f1968f86ee9f36e718.tar.gz lwn-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/sh_cmt.c')
| -rw-r--r-- | drivers/clocksource/sh_cmt.c | 3 |
1 files changed, 3 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); } |