| Message ID | 20211006164332.1981454-8-robh@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | DT: CPU h/w id parsing clean-ups and cacheinfo id support | expand |
Rob Herring <robh@kernel.org> writes: > Replace open coded parsing of CPU nodes' 'reg' property with > of_get_cpu_hwid(). > > Cc: Michael Ellerman <mpe@ellerman.id.au> > Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> > Cc: Paul Mackerras <paulus@samba.org> > Cc: linuxppc-dev@lists.ozlabs.org > Signed-off-by: Rob Herring <robh@kernel.org> > --- > arch/powerpc/kernel/smp.c | 7 +------ > 1 file changed, 1 insertion(+), 6 deletions(-) > > diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c > index 9cc7d3dbf439..d96b0e361a73 100644 > --- a/arch/powerpc/kernel/smp.c > +++ b/arch/powerpc/kernel/smp.c > @@ -1313,18 +1313,13 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle) > int cpu_to_core_id(int cpu) > { > struct device_node *np; > - const __be32 *reg; > int id = -1; > > np = of_get_cpu_node(cpu, NULL); > if (!np) > goto out; > > - reg = of_get_property(np, "reg", NULL); > - if (!reg) > - goto out; > - > - id = be32_to_cpup(reg); > + id = of_get_cpu_hwid(np, 0); > out: > of_node_put(np); > return id; This looks OK to me. All the systems I can find have a /cpus/#address-cells of 1, so the change to use of_n_addr_cells() in of_get_cpu_hwid() should be fine. I booted it on a bunch of systems with no issues. Acked-by: Michael Ellerman <mpe@ellerman.id.au> cheers
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 9cc7d3dbf439..d96b0e361a73 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -1313,18 +1313,13 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle) int cpu_to_core_id(int cpu) { struct device_node *np; - const __be32 *reg; int id = -1; np = of_get_cpu_node(cpu, NULL); if (!np) goto out; - reg = of_get_property(np, "reg", NULL); - if (!reg) - goto out; - - id = be32_to_cpup(reg); + id = of_get_cpu_hwid(np, 0); out: of_node_put(np); return id;
Replace open coded parsing of CPU nodes' 'reg' property with of_get_cpu_hwid(). Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Rob Herring <robh@kernel.org> --- arch/powerpc/kernel/smp.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-)