From: Lee Revell <rlrevell@joe-job.com>
To: Giuliano Pochini <pochini@shiny.it>
Cc: Takashi Iwai <tiwai@suse.de>, alsa-devel@lists.sourceforge.net
Subject: Re: pm, hello ??
Date: Thu, 09 Feb 2006 17:56:14 -0500 [thread overview]
Message-ID: <1139525775.30058.123.camel@mindpipe> (raw)
In-Reply-To: <20060209231226.4c33f598.pochini@shiny.it>
On Thu, 2006-02-09 at 23:12 +0100, Giuliano Pochini wrote:
> Finally I found some time to debug it.
>
> It happens that "echo 3 > file" actually writes "3\n" into the file.
> lib/vsprintf.c:simple_strtoul() returns the first non-digit character
> in the
> second argument. Then driver/base/power/sysfs.c:state_store() does:
> if (*rest)
> return -EINVAL;
> *rest is always '\n', so it exits here.
There was a discussion not long ago on LKML about whether sysfs should
strip the trailing newline. The consensus was that this is bloat, and
echo -n should be used. I'm not sure I agree...
Lee
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prev parent reply other threads:[~2006-02-09 22:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-30 21:55 pm, hello ?? Giuliano Pochini
2006-01-31 14:06 ` Takashi Iwai
2006-02-09 22:12 ` Giuliano Pochini
2006-02-09 22:56 ` Lee Revell [this message]
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