linux-kernel - Re: ping [PATCH v3] WAN: Adding support for Lantiq PEF2256 E1 chipset (FALC56)

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Date:	Sun, 19 Jan 2014 18:50:18 -0600
From:	Rob Landley <rob@...dley.net>
To:	Joe Perches <joe@...ches.com>,
	Christophe Leroy <christophe.leroy@....fr>
CC:	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Grant Likely <grant.likely@...aro.org>,
	Krzysztof Halasa <khc@...waw.pl>, devicetree@...r.kernel.org,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, marc.balemboy@....fr
Subject: Re: ping [PATCH v3] WAN: Adding support for Lantiq PEF2256 E1 chipset
 (FALC56)

On 01/19/14 13:34, Joe Perches wrote:
> On Sun, 2014-01-19 at 19:07 +0100, Christophe Leroy wrote:
>> Pinging this watch as we got no feedback since 22 Nov, although we have taken
>> into account reviews from v1 and v2.
>>
>> The patch adds WAN support for Lantiq FALC56 - PEF2256 E1 Chipset.
...
>> +static ssize_t fs_attr_Tx_TS_store(struct device *dev,
>> +			struct device_attribute *attr,  const char *buf,
>> +			size_t count)
>> +{
>> +	struct net_device *ndev = dev_get_drvdata(dev);
>> +	struct pef2256_dev_priv *priv = dev_to_hdlc(ndev)->priv;
>> +	unsigned long value;
>> +	int ret = kstrtoul(buf, 16, (long int *)&value);
>
> unportable cast

How is that not portable? It's long == pointer on Linux, which supports 
LP64 on all targets. (As do BSD, MacOSX, android, and iOS.)

   http://www.unix.org/whitepapers/64bit.html
   http://www.unix.org/version2/whatsnew/lp64_wp.html

Do you mean it's not portable to Windows?

   http://blogs.msdn.com/oldnewthing/archive/2005/01/31/363790.aspx

Rob
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