linux-kernel - Re: [PATCH 4/8] mmc: sdhci-pxav3: enable proper resuming on Armada 38x SoC

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Message-ID: <CAPv3WKfB=5Xz+f=BMiPTD1EYZifX41g0BK0kwX5rNFjG3PQ3ig@mail.gmail.com>
Date:	Fri, 9 Oct 2015 11:48:34 +0200
From:	Marcin Wojtas <mw@...ihalf.com>
To:	Jisheng Zhang <jszhang@...vell.com>
Cc:	linux-kernel@...r.kernel.org,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Andrew Lunn <andrew@...n.ch>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Jason Cooper <jason@...edaemon.net>,
	Tawfik Bayouk <tawfik@...vell.com>,
	Grzegorz Jaszczyk <jaz@...ihalf.com>, nadavh@...vell.com,
	Lior Amsalem <alior@...vell.com>,
	Gregory Clément 
	<gregory.clement@...e-electrons.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Subject: Re: [PATCH 4/8] mmc: sdhci-pxav3: enable proper resuming on Armada
 38x SoC

Hi Jisheng,


>> +     res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mbus");
>> +     pxa->mbus_win_regs = devm_ioremap_resource(&pdev->dev, res);
>> +     if (IS_ERR(pxa->mbus_win_regs)) {
>> +             dev_err(mmc_dev(host->mmc),
>> +                     "failed to obtain MBus windows register base\n");
>
> devm_ioremap_resource() has warned us if it fails, so is it better to remove
> this dev_err() here?
>

Indeed, I'll remove this excessive verbosity.

>>       struct sdhci_host *host = dev_get_drvdata(dev);
>> +     struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
>> +     struct sdhci_pxa *pxa = pltfm_host->priv;
>> +     struct device_node *np = dev->of_node;
>> +
>> +     if (of_device_is_compatible(np, "marvell,armada-380-sdhci"))
>
> this would increase resume time especially those non armada-380-sdhci host
> although it's trivial. Is it better to check "if (pxa->mbus_win_regs)"?
>

Already implemented in v2.

Thanks for the comments,
Marcin
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