linux-kernel - Re: [PATCH 12/13] tty: serial: 8250: omap: add custom irq handling

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Message-ID: <20141009131909.GB9108@kuha.fi.intel.com>
Date:	Thu, 9 Oct 2014 16:19:09 +0300
From:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	tony@...mide.com, balbi@...com, gregkh@...uxfoundation.org,
	Peter Hurley <peter@...leysoftware.com>
Subject: Re: [PATCH 12/13] tty: serial: 8250: omap: add custom irq handling

On Mon, Sep 29, 2014 at 08:06:48PM +0200, Sebastian Andrzej Siewior wrote:
> We have (or will have) custom DMA callbacks in the omap driver due to
> the different behaviour in the RX and TX case. To make this work
> we need a few changes in the IRQ handler to invoke the rx_handler again
> after the "manual" mode or retry the tx_handler again before falling
> back to the manual mode.
> 
> Heikki didn't want to see the extra hacks in the generic / default irq
> handler and Peter wasn't too happy about an OMAP-only IRQ handler. The
> way I planned it is to use this extra IRQ routine only in DMA case. If
> Peter dislike this approach then I hope Heikki doesn't block changes in
> the default IRQ handler :)
> 
> Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> Cc: Peter Hurley <peter@...leysoftware.com>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

Looks good to me.

Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>


-- 
heikki
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