Re: [PATCH] pata_hpt3x2n: Cable detect handling

[Sergei Shtylyov <sshtylyov@ru.mvista.com>]

Hello.

Alan Cox wrote:

> +/**
> + *	hpt3x2n_pre_reset	-	reset the hpt3x2n bus
> + *	@ap: ATA port to reset
> + *
> + *	Perform the initial reset handling for the 3x2n series controllers.
> + *	Reset the hardware and state machine,
> + */
>  
> +static int hpt3xn_pre_reset(struct ata_port *ap)
> +{
> +	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
>  	/* Reset the state machine */
>  	pci_write_config_byte(pdev, 0x50, 0x37);
>  	pci_write_config_byte(pdev, 0x54, 0x37);
>  	udelay(100);
> -
>  	return ata_std_prereset(ap);
>  }
>  

    Hmmm... is it really safe to reset both channels here, when only one port 
gets reset?

MBR, Sergei