[PATCH] of: property: Fix fw_devlink handling of interrupt-map

[Rob Herring (Arm)]

On Tue, 28 May 2024 17:41:32 +0100, Marc Zyngier wrote:
> Commit d976c6f4b32c ("of: property: Add fw_devlink support for
> interrupt-map property") tried to do what it says on the tin,
> but failed on a couple of points:
> 
> - it confuses bytes and cells. Not a huge deal, except when it
>   comes to pointer arithmetic
> 
> - it doesn't really handle anything but interrupt-maps that have
>   their parent #address-cells set to 0
> 
> The combinations of the two leads to some serious fun on my M1
> box, with plenty of WARN-ON() firing all over the shop, and
> amusing values being generated for interrupt specifiers.
> 
> Address both issues so that I can boot my machines again.
> 
> Fixes: d976c6f4b32c ("of: property: Add fw_devlink support for interrupt-map property")
> Signed-off-by: Marc Zyngier <maz at kernel.org>
> Cc: Anup Patel <apatel at ventanamicro.com>
> Cc: Saravana Kannan <saravanak at google.com>
> Cc: Rob Herring (Arm) <robh at kernel.org>
> ---
>  drivers/of/property.c | 16 ++++++++++++++--
>  1 file changed, 14 insertions(+), 2 deletions(-)
> 

Applied, thanks!