[Blackfin] arch: Fix BUG - Enable ISP1362 driver to work ok with BF561
This fixes a bug (zero pointer access) only seen on BF561, during USB
Mass Storage/SCSI Host initialization.
It appears to be related to registering a none existing CPU
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index 2f156bf..aca5e6e 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -48,6 +48,8 @@
#include <asm/fixed_code.h>
#include <asm/early_printk.h>
+static DEFINE_PER_CPU(struct cpu, cpu_devices);
+
u16 _bfin_swrst;
unsigned long memory_start, memory_end, physical_mem_end;
@@ -763,15 +765,15 @@
static int __init topology_init(void)
{
-#if defined (CONFIG_BF561)
- static struct cpu cpu[2];
- register_cpu(&cpu[0], 0);
- register_cpu(&cpu[1], 1);
+ int cpu;
+
+ for_each_possible_cpu(cpu) {
+ struct cpu *c = &per_cpu(cpu_devices, cpu);
+
+ register_cpu(c, cpu);
+ }
+
return 0;
-#else
- static struct cpu cpu[1];
- return register_cpu(cpu, 0);
-#endif
}
subsys_initcall(topology_init);