Messages in this thread |  | | | Date | Fri, 9 May 2008 00:37:13 +0100 | | From | Matthew Garrett <> | | Subject | Re: [PATCH] ata: ahci: power off unused ports |
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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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