Re: [PATCH v2] base: isa: Remove X86_32 dependency

From: Thomas Gleixner
Date: Wed Jan 27 2016 - 05:08:30 EST

On Fri, 22 Jan 2016, William Breathitt Gray wrote:
> Many motherboards utilize a LPC to ISA bridge in order to decode
> ISA-style port-mapped I/O addresses. This is particularly true for
> embedded motherboards supporting the PC/104 bus (a bus specification
> derived from ISA).
> These motherboards are now commonly running 64-bit x86 processors. The
> X86_32 dependency should be removed from the ISA bus configuration
> option in order to support these newer motherboards.
> A new config option, CONFIG_ISA_BUS, is introduced to allow for the
> compilation of the ISA bus driver independent of the CONFIG_ISA option.
> Devices which communicate via ISA-compatible buses can now be supported
> independent of the dependencies of the CONFIG_ISA option.
> Signed-off-by: William Breathitt Gray <vilhelm.gray@xxxxxxxxx>

Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>