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| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2012-05-10 00:26:58 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-05-12 22:13:45 +0200 |
| commit | d6720003c3732db891f6b5b10691a9c13ff6c46b (patch) | |
| tree | 93b49f4fe432d29aaef9b5772b640687e0931103 /arch/arm/mach-shmobile/smp-sh73a0.c | |
| parent | b759bd114e27fbb940fb44fd16552e8f4acd831e (diff) | |
| download | linux-d6720003c3732db891f6b5b10691a9c13ff6c46b.tar.gz linux-d6720003c3732db891f6b5b10691a9c13ff6c46b.tar.bz2 linux-d6720003c3732db891f6b5b10691a9c13ff6c46b.zip | |
ARM / mach-shmobile: sh73a0 SMP TWD boot regression fix
Fix SMP TWD boot regression on sh73a0 based platforms caused by:
4200b16 ARM: shmobile: convert to twd_local_timer_register() interface
After the merge of the above commit it has been impossible to boot
sh73a0 based SoCs with SMP enabled and CONFIG_HAVE_ARM_TWD=y. The
kernel crashes at smp_init_cpus() timing which is before the console
has been initialized, so to the user this looks like a kernel lock up
without any particular error message.
This patch fixes the regression on sh73a0 by moving the TWD
registration code from smp_init_cpus() to sys_timer->init() time.
This patch removed shmobile_twd_init() which is no longer needed
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'arch/arm/mach-shmobile/smp-sh73a0.c')
| -rw-r--r-- | arch/arm/mach-shmobile/smp-sh73a0.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm/mach-shmobile/smp-sh73a0.c b/arch/arm/mach-shmobile/smp-sh73a0.c index 14ad8b052f1a..e36c41c4ab40 100644 --- a/arch/arm/mach-shmobile/smp-sh73a0.c +++ b/arch/arm/mach-shmobile/smp-sh73a0.c @@ -42,7 +42,13 @@ static void __iomem *scu_base_addr(void) static DEFINE_SPINLOCK(scu_lock); static unsigned long tmp; +#ifdef CONFIG_HAVE_ARM_TWD static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29); +void __init sh73a0_register_twd(void) +{ + twd_local_timer_register(&twd_local_timer); +} +#endif static void modify_scu_cpu_psr(unsigned long set, unsigned long clr) { @@ -62,7 +68,6 @@ unsigned int __init sh73a0_get_core_count(void) { void __iomem *scu_base = scu_base_addr(); - shmobile_twd_init(&twd_local_timer); return scu_get_core_count(scu_base); } |