On Wed, 2015-11-18 at 18:19 +0800, Eryu Guan wrote:
> Hi,
>
> I hit the following build error on PPC64 host, v4.4-rc1 kernel.
>
> ERROR: "fsl8250_handle_irq" [drivers/tty/serial/of_serial.ko]
> undefined!
> make[1]: *** [__modpost] Error 1
> make: *** [modules] Error 2
>
> and I bisected to commit d43b54d269d2 ("serial: Enable Freescale 16550
> workaround on arm").
>
> From the commit log it seems that PPC host doesn't need
> fsl8250_handle_irq, it's there for ARM. So I tested this patch and build
> works fine, but I'm not sure if it's a correct fix.
The correct fix is to export fsl8250_handle_irq(). A patch for that was sent
by Arnd Bergman on Monday.
fsl8250_handle_irq() is used on PPC, it's just that we don't usually use
of_serial.c on the PPC chips where this is relevant.
-Scott
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