linux-kernel - Re: [PATCH v2 1/2] staging: Add ST-Ericsson CG2900 driver

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Date:	Mon, 28 Mar 2011 11:13:56 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Par-Gunnar Hjalmdahl <par-gunnar.p.hjalmdahl@...ricsson.com>
cc:	Greg Kroah-Hartman <gregkh@...e.de>, devel@...verdev.osuosl.org,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
	Pavan Savoy <pavan_savoy@...y.com>,
	Vitaly Wool <vitalywool@...il.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	Marcel Holtmann <marcel@...tmann.org>,
	Lukasz Rymanowski <Lukasz.Rymanowski@...to.com>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Par-Gunnar Hjalmdahl <pghatwork@...il.com>,
	Lee Jones <lee.jones@...aro.org>,
	Mathieu Poirier <mathieu.poirier@...aro.org>
Subject: Re: [PATCH v2 1/2] staging: Add ST-Ericsson CG2900 driver

On Mon, 28 Mar 2011, Par-Gunnar Hjalmdahl wrote:

This wants to be split up for review.

> +/**
> + * cts_interrupt() - Called to handle CTS interrupt.
> + * @irq:	Interrupt that occurred.
> + * @dev_id:	Device ID where interrupt occurred.
> + *
> + * The cts_interrupt() function is called if interrupt on CTS occurred.
> + * It disables the interrupt and starts a new work thread to handle
> + * the interrupt.
> + */
> +static irqreturn_t cts_interrupt(int irq, void *dev_id)
> +{
> +	struct uart_info *uart_info = dev_get_drvdata(dev_id);
> +#ifdef CONFIG_PM
> +	disable_irq_wake(irq);
> +#endif
> +	disable_irq_nosync(irq);
> +
> +	/* Create work and leave IRQ context. */
> +	(void)create_work_item(uart_info, handle_cts_irq);
> +
> +	return IRQ_HANDLED;
> +}

Have you thought about using a threaded interrupt handler? That would
make all this work cruft go away.

Thanks,

	tglx
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