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powerpc/85xx: don't init the mpic ipi for the SoC which has doorbell support

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It makes no sense to initialize the mpic ipi for the SoC which has
doorbell support. So set the smp_85xx_ops.probe to NULL for this
case. Since the smp_85xx_ops.probe is also used in function
smp_85xx_setup_cpu() to check if we need to invoke
mpic_setup_this_cpu(), we introduce a new setup_cpu function
smp_85xx_basic_setup() to remove this dependency.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
This commit is contained in:
Kevin Hao 2013-11-07 15:17:17 +08:00 committed by Scott Wood
parent 0ff649ca50
commit 455d23a890
1 changed files with 11 additions and 6 deletions
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17
arch/powerpc/platforms/85xx/smp.c
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@ -389,15 +389,18 @@ static void mpc85xx_smp_machine_kexec(struct kimage *image)
}
#endif /* CONFIG_KEXEC */
static void smp_85xx_setup_cpu(int cpu_nr)
static void smp_85xx_basic_setup(int cpu_nr)
{
if (smp_85xx_ops.probe == smp_mpic_probe)
mpic_setup_this_cpu();
if (cpu_has_feature(CPU_FTR_DBELL))
doorbell_setup_this_cpu();
}
static void smp_85xx_setup_cpu(int cpu_nr)
{
mpic_setup_this_cpu();
smp_85xx_basic_setup(cpu_nr);
}
static const struct of_device_id mpc85xx_smp_guts_ids[] = {
{ .compatible = "fsl,mpc8572-guts", },
{ .compatible = "fsl,p1020-guts", },
@ -412,13 +415,14 @@ void __init mpc85xx_smp_init(void)
{
struct device_node *np;
smp_85xx_ops.setup_cpu = smp_85xx_setup_cpu;
np = of_find_node_by_type(NULL, "open-pic");
if (np) {
smp_85xx_ops.probe = smp_mpic_probe;
smp_85xx_ops.setup_cpu = smp_85xx_setup_cpu;
smp_85xx_ops.message_pass = smp_mpic_message_pass;
}
} else
smp_85xx_ops.setup_cpu = smp_85xx_basic_setup;
if (cpu_has_feature(CPU_FTR_DBELL)) {
/*
@ -427,6 +431,7 @@ void __init mpc85xx_smp_init(void)
*/
smp_85xx_ops.message_pass = NULL;
smp_85xx_ops.cause_ipi = doorbell_cause_ipi;
smp_85xx_ops.probe = NULL;
}
np = of_find_matching_node(NULL, mpc85xx_smp_guts_ids);