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DateFri, 9 May 2008 00:37:13 +0100
FromMatthew Garrett <>
SubjectRe: [PATCH] ata: ahci: power off unused ports
On Thu, May 08, 2008 at 04:10:08PM -0700, Kristen Carlson Accardi wrote:

> +static int ahci_is_hotplug_capable(struct ata_port *ap)
> +{
> + void __iomem *port_mmio = ahci_port_base(ap);
> + u8 cmd;
> +
> + if (!ahci_power_save)
> + return 1;
> +
> + cmd = readl(port_mmio + PORT_CMD);
> + return ((cmd & PORT_CMD_HPCP) || (cmd & PORT_CMD_ESP));
> +}

Just out of interest, is this set on laptop bays? (Are any of those even
native SATA yet?)
--
Matthew Garrett | mjg59@srcf.ucam.org

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