diff options
author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2012-05-10 03:26:58 -0400 |
---|---|---|
committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-05-12 16:13:45 -0400 |
commit | d6720003c3732db891f6b5b10691a9c13ff6c46b (patch) | |
tree | 93b49f4fe432d29aaef9b5772b640687e0931103 /arch/arm/mach-shmobile/smp-sh73a0.c | |
parent | b759bd114e27fbb940fb44fd16552e8f4acd831e (diff) |
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 14ad8b052f1..e36c41c4ab4 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) | |||
42 | static DEFINE_SPINLOCK(scu_lock); | 42 | static DEFINE_SPINLOCK(scu_lock); |
43 | static unsigned long tmp; | 43 | static unsigned long tmp; |
44 | 44 | ||
45 | #ifdef CONFIG_HAVE_ARM_TWD | ||
45 | static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29); | 46 | static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29); |
47 | void __init sh73a0_register_twd(void) | ||
48 | { | ||
49 | twd_local_timer_register(&twd_local_timer); | ||
50 | } | ||
51 | #endif | ||
46 | 52 | ||
47 | static void modify_scu_cpu_psr(unsigned long set, unsigned long clr) | 53 | static void modify_scu_cpu_psr(unsigned long set, unsigned long clr) |
48 | { | 54 | { |
@@ -62,7 +68,6 @@ unsigned int __init sh73a0_get_core_count(void) | |||
62 | { | 68 | { |
63 | void __iomem *scu_base = scu_base_addr(); | 69 | void __iomem *scu_base = scu_base_addr(); |
64 | 70 | ||
65 | shmobile_twd_init(&twd_local_timer); | ||
66 | return scu_get_core_count(scu_base); | 71 | return scu_get_core_count(scu_base); |
67 | } | 72 | } |
68 | 73 | ||