linux-kernel - Re: SYSFS "errors"

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Message-ID: <20130219135500.GI26623@pd.tnic>
Date:	Tue, 19 Feb 2013 14:55:00 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Mauro Carvalho Chehab <mchehab@...hat.com>
Cc:	balbi@...com, Greg KH <gregkh@...uxfoundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>, JBottomley@...allels.com,
	linux-scsi@...r.kernel.org, davem@...emloft.net,
	netdev@...r.kernel.org, Doug Thompson <dougthompson@...ssion.com>,
	linux-edac@...r.kernel.org, rjw@...k.pl, linux-pm@...r.kernel.org
Subject: Re: SYSFS "errors"

On Tue, Feb 19, 2013 at 10:50:48AM -0300, Mauro Carvalho Chehab wrote:
> It is actually worse, as if someone is using a C code to open the device
> with
> 	fp = open ("/sys/devices/system/edac/mc/mc0/sdram_scrub_rate", O_RDWR);
> 
> It will now start to fail if the device doesn't have both permissions.

That's fine - you're supposed to handle open()'s retval properly anyway. See my
other mail.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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