Messages in this thread |  | | Date | Thu, 13 Feb 2014 09:37:05 -0700 | From | Stephen Warren <> | Subject | Re: [PATCH v2 4/6] ARM: firmware: add prepare_idle() operation |
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On 02/13/2014 04:01 AM, Tomasz Figa wrote: > Hi Alexandre, > > On 07.02.2014 05:35, Alexandre Courbot wrote: >> Some firmwares do not put the CPU into idle mode themselves, but still >> need to be informed that the CPU is about to enter idle mode before this >> happens. Add a prepare_idle() operation to the firmware_ops structure to >> handle such cases. >> >> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> >> --- >> arch/arm/include/asm/firmware.h | 4 ++++ >> 1 file changed, 4 insertions(+) > > I wonder if .do_idle() couldn't simply return an appropriate error code > to let the upper layer know that it should proceed with normal CPU idle > activation, while still letting the firmware know that the CPU is going > to idle.
That seems to disagree with the naming of the operation, and the semantics I assume it has, though. It seems clearer to add an explicit separate op for this.
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