[PATCH] reset: sunxi: fix for 64-bit compilation

Andre Przywara andre.przywara at arm.com
Wed Mar 8 01:26:01 PST 2017


On 08/03/17 04:28, Chen-Yu Tsai wrote:
> On Mon, Mar 6, 2017 at 9:35 AM, Andre Przywara <andre.przywara at arm.com> wrote:
>> The Allwinner reset controller has 32-bit registers, so translating
>> the reset cell number into a register and bit offset should not use
>> any architecture dependent data size. Otherwise this breaks for 64-bit
>> architectures like arm64.
>> Fix this by making it clear that it's the hardware register width which
>> matters here in the calculation.
>> Signed-off-by: Andre Przywara <andre.przywara at arm.com>
> Acked-by: Chen-Yu Tsai <wens at csie.org>

Thanks a lot!

> Though I don't expect this driver to be used with arm64 chips.

Well, weren't we toying with the idea of using this for the A64 PRCM

Also the driver is actually pretty generic, and I have (renaming)
patches lying around to make this obvious. This is partly driven by a
side project for some (arm64) SoC support, which can happily use that
driver to tackle its device reset support.

So as this is an obvious bug, I'd rather see this fixed now.


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