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From: Bjorn Helgaas <helgaas@kernel.org>
To: Karol Herbst <kherbst@redhat.com>
Cc: linux-kernel@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>,
	Lukas Wunner <lukas@wunner.de>,
	linux-pci@vger.kernel.org, nouveau@lists.freedesktop.org
Subject: Re: [PATCH] PCI: stop spamming info in quirk_nvidia_hda
Date: Thu, 16 Mar 2023 14:50:37 -0500	[thread overview]
Message-ID: <20230316195037.GA1849341@bhelgaas> (raw)
In-Reply-To: <20230316143122.2377354-1-kherbst@redhat.com>

On Thu, Mar 16, 2023 at 03:31:22PM +0100, Karol Herbst wrote:
> Users kept complaining about those messages and it's a little spammy on
> prime systems so turn it into a debug print.

What is a "prime system"?

I'm a little surprised that users would really care about the message.
But I do see comments like these:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1836308/comments/15
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2002206
that suggest the message happens frequently, maybe if we're resuming
the controller after runtime suspend?

Maybe this should be a pci_info_once() sort of thing?  I think there's
some value in knowing that we're changing the BIOS configuration
outside the purview of a driver, since I assume BIOS had some reason
for hiding the HDA controller.

> Cc: Bjorn Helgaas <bhelgaas@google.com>
> Cc: Lukas Wunner <lukas@wunner.de>
> Cc: linux-pci@vger.kernel.org
> Cc: nouveau@lists.freedesktop.org
> Fixes: b516ea586d71 ("PCI: Enable NVIDIA HDA controllers")
> Signed-off-by: Karol Herbst <kherbst@redhat.com>
> ---
>  drivers/pci/quirks.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
> index 44cab813bf951..b10c77bbe4716 100644
> --- a/drivers/pci/quirks.c
> +++ b/drivers/pci/quirks.c
> @@ -5549,7 +5549,7 @@ static void quirk_nvidia_hda(struct pci_dev *gpu)
>  	if (val & BIT(25))
>  		return;
>  
> -	pci_info(gpu, "Enabling HDA controller\n");
> +	pci_dbg(gpu, "Enabling HDA controller\n");
>  	pci_write_config_dword(gpu, 0x488, val | BIT(25));
>  
>  	/* The GPU becomes a multi-function device when the HDA is enabled */
> -- 
> 2.39.2
> 

WARNING: multiple messages have this Message-ID (diff)
From: Bjorn Helgaas <helgaas@kernel.org>
To: Karol Herbst <kherbst@redhat.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
	linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
	nouveau@lists.freedesktop.org
Subject: Re: [Nouveau] [PATCH] PCI: stop spamming info in quirk_nvidia_hda
Date: Thu, 16 Mar 2023 14:50:37 -0500	[thread overview]
Message-ID: <20230316195037.GA1849341@bhelgaas> (raw)
In-Reply-To: <20230316143122.2377354-1-kherbst@redhat.com>

On Thu, Mar 16, 2023 at 03:31:22PM +0100, Karol Herbst wrote:
> Users kept complaining about those messages and it's a little spammy on
> prime systems so turn it into a debug print.

What is a "prime system"?

I'm a little surprised that users would really care about the message.
But I do see comments like these:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1836308/comments/15
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2002206
that suggest the message happens frequently, maybe if we're resuming
the controller after runtime suspend?

Maybe this should be a pci_info_once() sort of thing?  I think there's
some value in knowing that we're changing the BIOS configuration
outside the purview of a driver, since I assume BIOS had some reason
for hiding the HDA controller.

> Cc: Bjorn Helgaas <bhelgaas@google.com>
> Cc: Lukas Wunner <lukas@wunner.de>
> Cc: linux-pci@vger.kernel.org
> Cc: nouveau@lists.freedesktop.org
> Fixes: b516ea586d71 ("PCI: Enable NVIDIA HDA controllers")
> Signed-off-by: Karol Herbst <kherbst@redhat.com>
> ---
>  drivers/pci/quirks.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
> index 44cab813bf951..b10c77bbe4716 100644
> --- a/drivers/pci/quirks.c
> +++ b/drivers/pci/quirks.c
> @@ -5549,7 +5549,7 @@ static void quirk_nvidia_hda(struct pci_dev *gpu)
>  	if (val & BIT(25))
>  		return;
>  
> -	pci_info(gpu, "Enabling HDA controller\n");
> +	pci_dbg(gpu, "Enabling HDA controller\n");
>  	pci_write_config_dword(gpu, 0x488, val | BIT(25));
>  
>  	/* The GPU becomes a multi-function device when the HDA is enabled */
> -- 
> 2.39.2
> 

  parent reply	other threads:[~2023-03-16 19:50 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-16 14:31 [Nouveau] [PATCH] PCI: stop spamming info in quirk_nvidia_hda Karol Herbst
2023-03-16 14:31 ` Karol Herbst
2023-03-16 16:41 ` Lukas Wunner
2023-03-16 16:41   ` [Nouveau] " Lukas Wunner
2023-03-16 19:50 ` Bjorn Helgaas [this message]
2023-03-16 19:50   ` Bjorn Helgaas
2023-03-16 20:04   ` Karol Herbst
2023-03-16 20:04     ` Karol Herbst

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