linux-kernel - Re: [PATCH v2 4/5] ACPI / extlog: Switch to use new generic UUID API

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Message-ID: <1496679785.22624.19.camel@linux.intel.com>
Date:   Mon, 05 Jun 2017 19:23:05 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Christoph Hellwig <hch@....de>
Cc:     linux-kernel@...r.kernel.org,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        linux-acpi@...r.kernel.org,
        Dan Williams <dan.j.williams@...el.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Borislav Petkov <bp@...e.de>, intel-gfx@...ts.freedesktop.org
Subject: Re: [PATCH v2 4/5] ACPI / extlog: Switch to use new generic UUID API

On Mon, 2017-06-05 at 18:06 +0200, Christoph Hellwig wrote:
> > @@ -165,11 +165,11 @@ static int extlog_print(struct notifier_block
> > *nb, unsigned long val,
> >  	err_seq++;
> >  	gdata = (struct acpi_hest_generic_data *)(tmp + 1);
> >  	if (gdata->validation_bits & CPER_SEC_VALID_FRU_ID)
> > -		fru_id = (uuid_le *)gdata->fru_id;
> > +		fru_id = (guid_t *)gdata->fru_id;
> >  	if (gdata->validation_bits & CPER_SEC_VALID_FRU_TEXT)
> >  		fru_text = gdata->fru_text;
> > -	sec_type = (uuid_le *)gdata->section_type;
> > -	if (!uuid_le_cmp(*sec_type, CPER_SEC_PLATFORM_MEM)) {
> > +	sec_type = (guid_t *)gdata->section_type;
> 
> From a quick look over the tree it seems like both fru_id and
> section_type should be declared as guid_t in
> struct acpi_hest_generic_data.


They are arrays of 16 u8:s.
And since it's defined in ACPI table definition I'm not sure we can
change it.

> 
> > +	if (!guid_equal(sec_type, &CPER_SEC_PLATFORM_MEM)) {
> 
> The "!" seems incorrect here.

Right.

-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy