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charset="utf-8" This changeset will reduce one reading of GICR_TYPER register when any of next 2 condictions meets: 1. found redistributor for current cpu 2. single_redist is true for gic_data.redist_regions[i] Signed-off-by: Rex Nie --- drivers/irqchip/irq-gic-v3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index eedfa8e9f077..d08a4773f631 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -982,7 +982,6 @@ static int gic_iterate_rdists(int (*fn)(struct redist_r= egion *, void __iomem *)) } =20 do { - typer =3D gic_read_typer(ptr + GICR_TYPER); ret =3D fn(gic_data.redist_regions + i, ptr); if (!ret) return 0; @@ -990,6 +989,7 @@ static int gic_iterate_rdists(int (*fn)(struct redist_r= egion *, void __iomem *)) if (gic_data.redist_regions[i].single_redist) break; =20 + typer =3D gic_read_typer(ptr + GICR_TYPER); if (gic_data.redist_stride) { ptr +=3D gic_data.redist_stride; } else { --=20 2.34.1