linux-kernel - Re: [PATCH 7/8] firewire: core: detect model name for legacy layout of configuration ROM

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Date: Thu, 21 Dec 2023 22:12:48 +0900
From: Takashi Sakamoto <o-takashi@...amocchi.jp>
To: Adam Goldman <adamg@...ox.com>
Cc: linux1394-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 7/8] firewire: core: detect model name for legacy layout
 of configuration ROM

Hi,

On Thu, Dec 21, 2023 at 04:50:08AM -0800, Adam Goldman wrote:
> Hi,
> 
> > -	ret = fw_csr_string(dir, attr->key, buf, bufsize);
> > +	for (i = 0; i < ARRAY_SIZE(directories) && !!directories[i]; ++i) {
> > +		int result = fw_csr_string(directories[i], attr->key, buf, bufsize);
> > +		// Detected.
> > +		if (result >= 0)
> > +			ret = result;
> > +	}
> >  
> >  	if (ret >= 0) {
> 
> ret is an automatic variable with no initializer. Unless you initialize 
> it (to -ENOENT), this is UB.

Indeed. The uninitialized value is going to be evaluated. I'll send take
2 patchset later.


Thanks

Takashi Sakamoto