linux-kernel - Re: [PATCH 03/17] mmc: mmci: Mask IRQs for all variants during runtime suspend

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Message-ID: <20140218160542.GH21483@n2100.arm.linux.org.uk>
Date:	Tue, 18 Feb 2014 16:05:42 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Ulf Hansson <ulf.hansson@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org,
	Alessandro Rubini <rubini@...pv.it>,
	Linus Walleij <linus.walleij@...aro.org>,
	Wolfram Sang <wsa@...-dreams.de>,
	Chris Ball <chris@...ntf.net>, Mark Brown <broonie@...nel.org>,
	linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
	linux-spi@...r.kernel.org, linux-mmc@...r.kernel.org
Subject: Re: [PATCH 03/17] mmc: mmci: Mask IRQs for all variants during
	runtime suspend

On Tue, Feb 04, 2014 at 04:58:44PM +0100, Ulf Hansson wrote:
> In runtime suspended state, we are not expecting IRQs and thus we can
> safely mask them, not only for pwrreg_nopower variants but for all.
> 
> Obviously we then also need to make sure we restore the IRQ mask while
> becoming runtime resumed.

So, what happens when this patch is applied, and a SDIO card is attached
which expects to receive interrupts at any moment?

Given that I've run into this during the last week with a SDHCI controller,
I'm not that thrilled with other interfaces doing the same broken thing.

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