linux-kernel - Re: [PATCH] crypto: ccp: Don't initialize CCP for PSP 0x1649

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Message-ID: <56d92baa-d05a-9b02-0195-7627187fdde1@amd.com>
Date:   Mon, 3 Apr 2023 12:55:14 -0500
From:   Tom Lendacky <thomas.lendacky@....com>
To:     Mario Limonciello <mario.limonciello@....com>,
        John Allen <john.allen@....com>
Cc:     stable@...r.kernel.org, Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] crypto: ccp: Don't initialize CCP for PSP 0x1649

On 4/3/23 12:38, Mario Limonciello wrote:
> A number of platforms are emitting the error:
> ```ccp: unable to access the device: you might be running a broken BIOS.```
> 
> This is expected behavior as CCP is no longer accessible from the PSP's
> PCIe BAR so stop trying to probe CCP for 0x1649.
> 
> Cc: stable@...r.kernel.org
> Signed-off-by: Mario Limonciello <mario.limonciello@....com>

Acked-by: Tom Lendacky <thomas.lendacky@....com>

> ---
>   drivers/crypto/ccp/sp-pci.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/crypto/ccp/sp-pci.c b/drivers/crypto/ccp/sp-pci.c
> index 084d052fddcc..55411b494d69 100644
> --- a/drivers/crypto/ccp/sp-pci.c
> +++ b/drivers/crypto/ccp/sp-pci.c
> @@ -451,9 +451,9 @@ static const struct pci_device_id sp_pci_table[] = {
>   	{ PCI_VDEVICE(AMD, 0x1468), (kernel_ulong_t)&dev_vdata[2] },
>   	{ PCI_VDEVICE(AMD, 0x1486), (kernel_ulong_t)&dev_vdata[3] },
>   	{ PCI_VDEVICE(AMD, 0x15DF), (kernel_ulong_t)&dev_vdata[4] },
> -	{ PCI_VDEVICE(AMD, 0x1649), (kernel_ulong_t)&dev_vdata[4] },
>   	{ PCI_VDEVICE(AMD, 0x14CA), (kernel_ulong_t)&dev_vdata[5] },
>   	{ PCI_VDEVICE(AMD, 0x15C7), (kernel_ulong_t)&dev_vdata[6] },
> +	{ PCI_VDEVICE(AMD, 0x1649), (kernel_ulong_t)&dev_vdata[6] },
>   	/* Last entry must be zero */
>   	{ 0, }
>   };