[PATCH v3 36/51] cpuidle,omap3: Use WFI for omap3_pm_idle()

Peter Zijlstra
Thu, 12 Jan 2023 19:43:50 -0000

arch_cpu_idle() is a very simple idle interface and exposes only a
single idle state and is expected to not require RCU and not do any
tracing/instrumentation.

As such, omap_sram_idle() is not a valid implementation. Replace it
with the simple (shallow) omap3_do_wfi() call. Leaving the more
complicated idle states for the cpuidle driver.

Signed-off-by: Peter Zijlstra (Intel) <peterz at infradead.org>
Acked-by: Tony Lindgren <tony at atomide.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki at intel.com>
Acked-by: Frederic Weisbecker <frederic at kernel.org>
Tested-by: Tony Lindgren <tony at atomide.com>
Tested-by: Ulf Hansson <ulf.hansson at linaro.org>
---
 arch/arm/mach-omap2/pm34xx.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -294,7 +294,7 @@ static void omap3_pm_idle(void)
 	if (omap_irq_pending())
 		return;

-	omap_sram_idle();
+	omap3_do_wfi();
 }

 #ifdef CONFIG_SUSPEND