linux-kernel - Re: [PATCH v6 1/2] irqchip: imx-gpcv2: IMX GPCv2 driver for wakeup sources

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Message-ID: <alpine.DEB.2.11.1507261346250.18576@nanos>
Date:	Sun, 26 Jul 2015 13:48:03 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Shenwei Wang <shenwei.wang@...escale.com>
cc:	shawn.guo@...aro.org, jason@...edaemon.net,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	b20788@...escale.com
Subject: Re: [PATCH v6 1/2] irqchip: imx-gpcv2: IMX GPCv2 driver for wakeup
 sources

On Wed, 22 Jul 2015, Shenwei Wang wrote:
> +static int imx_gpcv2_irq_set_wake(struct irq_data *d, unsigned int on)
> +{
> +	struct imx_gpcv2_irq *cd = d->chip_data;
> +	unsigned int idx = d->hwirq / 32;
> +	unsigned long flags;
> +	void __iomem *reg;
> +	u32 mask, val;
> +
> +	raw_spin_lock_irqsave(&cd->lock.rlock, flags);

Oh no. You need to make cd->lock a raw_spinlock and then use
raw_spin_lock_irqsave() on it. How on earth did you come up with this
hackery?

Thanks,

	tglx
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