linux-kernel - Re: [PATCH] ahci: asm1064: correct count of reported ports

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Message-ID: <31d9b48d-320b-44b6-9ab5-d53f741dcc72@redhat.com>
Date: Wed, 7 Feb 2024 12:15:06 +0100
From: Hans de Goede <hdegoede@...hat.com>
To: "Andrey Jr. Melnikov" <temnota.am@...il.com>, linux-ide@...r.kernel.org,
 linux-kernel@...r.kernel.org
Cc: dlemoal@...nel.org
Subject: Re: [PATCH] ahci: asm1064: correct count of reported ports

Hi Andrey

On 2/7/24 10:58, Andrey Jr. Melnikov wrote:
> The ASM1064 SATA host controller always reports wrongly,
> that it has 24 ports. But in reality, it only has four ports.
> 
> before:
> ahci 0000:04:00.0: SSS flag set, parallel bus scan disabled
> ahci 0000:04:00.0: AHCI 0001.0301 32 slots 24 ports 6 Gbps 0xffff0f impl SATA mode
> ahci 0000:04:00.0: flags: 64bit ncq sntf stag pm led only pio sxs deso sadm sds apst 
> 
> after:
> ahci 0000:04:00.0: ASM1064 has only four ports
> ahci 0000:04:00.0: forcing port_map 0xffff0f -> 0xf
> ahci 0000:04:00.0: SSS flag set, parallel bus scan disabled
> ahci 0000:04:00.0: AHCI 0001.0301 32 slots 24 ports 6 Gbps 0xf impl SATA mode

This still says 24 ports, is that a copy & paste error in the commit msg ?

Regards,

Hans



> ahci 0000:04:00.0: flags: 64bit ncq sntf stag pm led only pio sxs deso sadm sds apst 
> 
> 
> Signed-off-by: Andrey Jr. Melnikov <temnota.am@...il.com>
> 
> diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
> index da2e74fce2d9..ec30d8330d16 100644
> --- a/drivers/ata/ahci.c
> +++ b/drivers/ata/ahci.c
> @@ -671,9 +671,14 @@ MODULE_PARM_DESC(mobile_lpm_policy, "Default LPM policy for mobile chipsets");
>  static void ahci_pci_save_initial_config(struct pci_dev *pdev,
>  					 struct ahci_host_priv *hpriv)
>  {
> -	if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA && pdev->device == 0x1166) {
> -		dev_info(&pdev->dev, "ASM1166 has only six ports\n");
> -		hpriv->saved_port_map = 0x3f;
> +	if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA) {
> +		if (pdev->device == 0x1166) {
> +			dev_info(&pdev->dev, "ASM1166 has only six ports\n");
> +			hpriv->saved_port_map = 0x3f;
> +		} else if (pdev->device == 0x1064) {
> +			dev_info(&pdev->dev, "ASM1064 has only four ports\n");
> +			hpriv->saved_port_map = 0xf;
> +		}
>  	}
>  
>  	if (pdev->vendor == PCI_VENDOR_ID_JMICRON && pdev->device == 0x2361) {
>