diff options
Diffstat (limited to 'arch/blackfin/mach-bf561')
| -rw-r--r-- | arch/blackfin/mach-bf561/hotplug.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/blackfin/mach-bf561/hotplug.c b/arch/blackfin/mach-bf561/hotplug.c index 42fc085629c..0123117b8ff 100644 --- a/arch/blackfin/mach-bf561/hotplug.c +++ b/arch/blackfin/mach-bf561/hotplug.c @@ -7,6 +7,7 @@ #include <linux/smp.h> #include <asm/blackfin.h> +#include <asm/cacheflush.h> #include <mach/pll.h> int hotplug_coreb; @@ -14,8 +15,16 @@ int hotplug_coreb; void platform_cpu_die(void) { unsigned long iwr; + hotplug_coreb = 1; + /* + * When CoreB wakes up, the code in _coreb_trampoline_start cannot + * turn off the data cache. This causes the CoreB failed to boot. + * As a workaround, we invalidate all the data cache before sleep. + */ + blackfin_invalidate_entire_dcache(); + /* disable core timer */ bfin_write_TCNTL(0); |