Re: [PATCH RFC v4 02/10] iio: core: support 64-bit register through debugfs

[Rodrigo Alencar]

On 26/05/10 01:07PM, Andy Shevchenko wrote:
> On Fri, May 08, 2026 at 06:00:18PM +0100, Rodrigo Alencar via B4 Relay wrote:
> 
> > Add debugfs_reg64_access function pointer field into iio_info and modify
> > file operation callbacks to favor 64-bit variant when it is available.
> 
> To write a value with bit 63 set it will require negative number, right?
> Isn't this  counter intuitive and may lead to rejection of the (correct)
> values?

In two's complement systems it works in practice, but it might be UB.
However scanf with %i accepts hex and octal, which is desirable for register
addresses and values.
 
-- 
Kind regards,

Rodrigo Alencar