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From: "freeman.liu" <freeman.liu@sun.com>
To: Alsa-devel@lists.sourceforge.net
Subject: A bug in intel8x0.c
Date: Fri, 16 Jan 2004 11:31:46 +0800	[thread overview]
Message-ID: <40075B22.6060208@sun.com> (raw)
In-Reply-To: <Pine.LNX.4.58.0312171653350.8959@pnote.perex-int.cz>

Hi, guy,
   
    I'm sure I found a bug in intel8x0.c.
   
    At the end of the function snd_intel8x0_codec_semaphore. If we 
couldn't get the semaphore in
1 ms, we'll reset the register and return EBUSY. But to reset the 
register, we should do a
    iaputword ( chip, 0, 0 ), according to the datasheet, write any 
value the this register will reset the
register.
    But in the code, what we did is iagetword ( chip, 0 ). This bug 
hadn't be exclosed because this code
path had never been reached, for the semaphore error often means a 
hardware error, which is very
rare.
    So, is there anybody who can modify this ?


    Freeman




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  parent reply	other threads:[~2004-01-16  3:31 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-12-17 15:53 alsa-lib resamplers broken James Courtier-Dutton
2003-12-17 15:54 ` Jaroslav Kysela
2003-12-17 16:15   ` James Courtier-Dutton
2003-12-17 16:25     ` Frank Barknecht
2003-12-17 19:33     ` Jaroslav Kysela
2004-01-16  3:31   ` freeman.liu [this message]
2004-01-16 12:13     ` A bug in intel8x0.c Clemens Ladisch
2004-01-17  1:47       ` freeman.liu

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