Re: [PATCH] spi/acpi: avoid spurious matches during slave enumeration

[Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>]

On Thu, Jun 20, 2019 at 02:36:49PM +0200, Ard Biesheuvel wrote:
> In the new SPI ACPI slave enumeration code, we use the value of
> lookup.max_speed_khz as a flag to decide whether a match occurred.
> However, doing so only makes sense if we initialize its value to
> zero beforehand, or otherwise, random junk from the stack will
> cause spurious matches.
> 
> So zero initialize the lookup struct fully, and only set the non-zero
> members explicitly.
> 
> Fixes: 4c3c59544f33 ("spi/acpi: enumerate all SPI slaves in the namespace")
> Cc: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>

Acked-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>