diff options
| author | Magnus Damm <damm@opensource.se> | 2012-05-10 05:57:22 (GMT) |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-05-12 20:13:38 (GMT) |
| commit | b759bd114e27fbb940fb44fd16552e8f4acd831e (patch) | |
| tree | aabfb18091281cc5af1df1e76a5ebdbc7bcd5a75 /arch/arm/mach-shmobile/setup-r8a7779.c | |
| parent | 173e2fec4d9e950ee5e4bba272091e248a961c98 (diff) | |
| download | linux-b759bd114e27fbb940fb44fd16552e8f4acd831e.tar.xz | |
ARM / mach-shmobile: r8a7779 SMP TWD boot regression fix
Fix SMP TWD boot regression on r8a7779 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
r8a7779 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 r8a7779 by moving the TWD
registration code from smp_init_cpus() to sys_timer->init() time.
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'arch/arm/mach-shmobile/setup-r8a7779.c')
| -rw-r--r-- | arch/arm/mach-shmobile/setup-r8a7779.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/setup-r8a7779.c b/arch/arm/mach-shmobile/setup-r8a7779.c index 12c6f52..e98e46f 100644 --- a/arch/arm/mach-shmobile/setup-r8a7779.c +++ b/arch/arm/mach-shmobile/setup-r8a7779.c @@ -262,10 +262,14 @@ void __init r8a7779_add_standard_devices(void) ARRAY_SIZE(r8a7779_late_devices)); } +/* do nothing for !CONFIG_SMP or !CONFIG_HAVE_TWD */ +void __init __weak r8a7779_register_twd(void) { } + static void __init r8a7779_earlytimer_init(void) { r8a7779_clock_init(); shmobile_earlytimer_init(); + r8a7779_register_twd(); } void __init r8a7779_add_early_devices(void) |