linux-kernel - Re: [RFC PATCH 3/8] ALSA: hda: Update PCI ID list

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Message-ID: <20230629160836.GA398698@bhelgaas>
Date:   Thu, 29 Jun 2023 11:08:36 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Amadeusz Sławiński 
        <amadeuszx.slawinski@...ux.intel.com>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Mark Brown <broonie@...nel.org>, Takashi Iwai <tiwai@...e.com>,
        alsa-devel@...a-project.org, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...el.com>
Subject: Re: [RFC PATCH 3/8] ALSA: hda: Update PCI ID list

Personally I would look for a more descriptive verb for the subject.
"Update" suggests that you might be adding or removing IDs, but I
think this patch is basically a mechanical conversion to use macros
instead of hard-coded hex.  Maybe "Convert to PCI_VDEVICE" or
something?

On Wed, Jun 28, 2023 at 10:51:30PM +0200, Amadeusz Sławiński wrote:
> Use PCI device IDs from pci_ids.h header and while at it change to using
> PCI_VDEVICE macro, to simplify declarations. This allows to change magic
> number PCI vendor IDs to macro ones for all vendors. For Intel devices
> use device IDs macros where defined.

> -#define IS_BXT(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x5a98)
> +#define IS_APL(pci) ((pci)->vendor == PCI_VENDOR_ID_INTEL && \
> +					(pci)->device == PCI_DEVICE_ID_INTEL_HDA_APL)

The actual content change seems fine, but the name change from BXT to
APL seems like it might be material for a separate patch, possibly
along with a similar name and comment change for
bxt_reduce_dma_latency()?

>  static const char * const driver_short_names[] = {
>  	[AZX_DRIVER_ICH] = "HDA Intel",
> @@ -571,7 +572,7 @@ static void hda_intel_init_chip(struct azx *chip, bool full_reset)
>  	snd_hdac_set_codec_wakeup(bus, false);
>  
>  	/* reduce dma latency to avoid noise */
> -	if (IS_BXT(pci))
> +	if (IS_APL(pci))
>  		bxt_reduce_dma_latency(chip);