linux-kernel - Re: [PATCH v3 13/13] mmc: mmci: Add Qcom specific pio

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Message-ID: <CACRpkdb+pUn=9UkEVhK_2nL8C2wq_6qOuuRV52TRnj1hJiHvSg@mail.gmail.com>
Date:	Wed, 28 May 2014 10:08:21 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:	Russell King <linux@....linux.org.uk>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	Chris Ball <chris@...ntf.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>
Subject: Re: [PATCH v3 13/13] mmc: mmci: Add Qcom specific pio_read function.

On Fri, May 23, 2014 at 2:53 PM,  <srinivas.kandagatla@...aro.org> wrote:

> +       if (unlikely(bytes)) {
> +               unsigned char buf[4];
(...)

Please think twice about this.
http://lwn.net/Articles/70473/
http://lwn.net/Articles/420019/
http://lwn.net/Articles/182369/

Yours,
Linus Walleij
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