On 10/04/18 16:41, Tony Lindgren wrote:
* Russell King <rmk+kernel@xxxxxxxxxxxxxxx> [180410 10:43]:
diff --git a/arch/arm/mach-omap2/prm_common.c b/arch/arm/mach-omap2/prm_common.c
index 021b5a8b9c0a..d4ddc78b2a0b 100644
--- a/arch/arm/mach-omap2/prm_common.c
+++ b/arch/arm/mach-omap2/prm_common.c
@@ -523,7 +523,7 @@ void omap_prm_reset_system(void)
prm_ll_data->reset_system();
while (1)
- cpu_relax();
+ cpu_do_idle();
}
Hmm we need to check so the added WFI here does not cause an
undesired change to a low power state. Adding Tero to Cc also.
Generally it is a bad idea to call arbitrary WFI within OMAP
architecture, as this triggers a PRCM power transition and will most
likely cause a hang if not controlled properly.
Has this patch been tested on any platform that supports proper power
management?
-Tero
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