[PATCH v4 09/13] serial: amba-pl011: Pass FIQ information to KGDB.

[Greg Kroah-Hartman]

On Thu, Jun 19, 2014 at 11:38:19AM +0100, Daniel Thompson wrote:
> If the AMBA bus has provided the pl011 with a FIQ resource (i.e. a
> second IRQ) then speculatively register it with KGDB when the polling
> driver is initialized.
> 
> By providing this information to KGDB the serial driver offers
> "permission" for KGDB to route the UART interrupt signal from the
> drivers own handler to KGDBs FIQ handler (which will eventually use the
> UART's polled I/O callbacks to interact with the user). This permission
> also implies the amba-pl011 driver has already unmasked RX interrupts
> (otherwise the FIQ handler will never trigger).
> 
> Signed-off-by: Daniel Thompson <daniel.thompson at linaro.org>
> Cc: Russell King <linux at arm.linux.org.uk>
> Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
> Cc: Jiri Slaby <jslaby at suse.cz>
> Cc: linux-serial at vger.kernel.org
> ---

Acked-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>