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Message-ID: <20120126135135.GD2611@pengutronix.de>
Date: Thu, 26 Jan 2012 14:51:35 +0100
From: Wolfram Sang <w.sang@...gutronix.de>
To: Julia Lawall <julia.lawall@...6.fr>
Cc: Mark Brown <broonie@...nsource.wolfsonmicro.com>,
"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
Takashi Iwai <tiwai@...e.de>,
"kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Dong Aisheng-B29396 <B29396@...escale.com>,
Liam Girdwood <lrg@...com>
Subject: Re: [alsa-devel] [PATCH 1/15] sound/soc/mxs/mxs-saif.c: add
missing iounmap
Julia,
> iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> @@ -663,18 +663,11 @@ static int mxs_saif_probe(struct platform_device *pdev)
> goto failed_get_resource;
> }
>
> - if (!request_mem_region(iores->start, resource_size(iores),
> - "mxs-saif")) {
> - dev_err(&pdev->dev, "request_mem_region failed\n");
> - ret = -EBUSY;
> - goto failed_get_resource;
> - }
> -
> - saif->base = ioremap(iores->start, resource_size(iores));
> + saif->base = devm_request_and_ioremap(&pdev->dev, iores);
You can skip checking 'iores', too. I also did that in the example, but
a lot of people seem to miss it. Where did you get the information how
to use devm_request_and_ioremap? I probably need to spread the word even
more...
Thanks,
Wolfram
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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