linux-kernel - Re: [PATCH v3] mmc: dw_mmc: Disable low power mode if SDIO interrupts are used

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Date:	Wed, 25 Jul 2012 19:02:16 +0900
From:	Jaehoon Chung <jh80.chung@...sung.com>
To:	Doug Anderson <dianders@...omium.org>
Cc:	linux-mmc@...r.kernel.org, Chris Ball <cjb@...top.org>,
	Will Newton <will.newton@...tec.com>,
	James Hogan <james.hogan@...tec.com>,
	Seungwon Jeon <tgih.jun@...sung.com>,
	Jaehoon Chung <jh80.chung@...sung.com>,
	linux-kernel@...r.kernel.org,
	Grant Grundler <grundler@...omium.org>,
	Olof Johansson <olofj@...omium.org>,
	shashidharh@...avyalabs.com, ki0351.kim@...sung.com
Subject: Re: [PATCH v3] mmc: dw_mmc: Disable low power mode if SDIO interrupts
 are used

> +
>  static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb)
>  {
>  	struct dw_mci_slot *slot = mmc_priv(mmc);
> @@ -871,6 +898,14 @@ static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb)
>  	/* Enable/disable Slot Specific SDIO interrupt */
>  	int_mask = mci_readl(host, INTMASK);
>  	if (enb) {
> +		/*
> +		 * Turn off low power mode if it was enabled.  This is a bit of
> +		 * a heavy operation and we disable / enable IRQs a lot, so
> +		 * we'll leave low power mode disabled and it will get
> +		 * re-enabled again in dw_mci_setup_bus().
> +		 */
> +		dw_mci_disable_low_power(mmc_priv(mmc));
Just use the slot. slot is already assigned to mmc_priv(mmc)

Reviewed-by: Jaehoon Chung <jh80.chung@...sung.com>


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