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riscv: use for_each_of_cpu_node iterator 

Use the new for_each_of_cpu_node() helper to iterate over cpu nodes
instead of open coding. Note that this will allow matching also on the
node name instead of the (for FDT) deprecated device_type property.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This commit is contained in:
Johan Hovold 2019-01-18 15:03:08 +01:00 committed by Palmer Dabbelt
parent e3d794d555
commit dd81c8ab81
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GPG Key ID: EF4CA1502CCBAB41
2 changed files with 5 additions and 4 deletions
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5
arch/riscv/kernel/cpufeature.c
View File

@ -28,7 +28,7 @@ bool has_fpu __read_mostly;
void riscv_fill_hwcap(void)
{
struct device_node *node = NULL;
struct device_node *node;
const char *isa;
size_t i;
static unsigned long isa2hwcap[256] = {0};
@ -46,9 +46,10 @@ void riscv_fill_hwcap(void)
* We don't support running Linux on hertergenous ISA systems. For
* now, we just check the ISA of the first "okay" processor.
*/
while ((node = of_find_node_by_type(node, "cpu")))
for_each_of_cpu_node(node) {
if (riscv_of_processor_hartid(node) >= 0)
break;
}
if (!node) {
pr_warn("Unable to find \"cpu\" devicetree entry\n");
return;

4
arch/riscv/kernel/smpboot.c
View File

@ -50,12 +50,12 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
void __init setup_smp(void)
{
struct device_node *dn = NULL;
struct device_node *dn;
int hart;
bool found_boot_cpu = false;
int cpuid = 1;
while ((dn = of_find_node_by_type(dn, "cpu"))) {
for_each_of_cpu_node(dn) {
hart = riscv_of_processor_hartid(dn);
if (hart < 0)
continue;