Hannes Reinecke wrote:
From: Hannes Reinecke <hare@xxxxxxx> Subject: AHCI suspend / resume fixes. The current ahci driver has the problem that it doesn't resume properly. Or rather, that resuming is unstable. Reason being is that AHCI has 4 registers containing the DMA address it should write things to. Of course there is no guarantee that Linux has assigned the same address to the DMA area across reboots. So we should better re-initialize those registers after resume. The patch also improves the port_start / port_stop routines to be more closely modelled after the spec. This also avoids a nasty msleep(500) during initialisation. Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
Seems sane at first glance, but can you please regenerate this against libata-dev.git#upstream ?
Upstream 2.6.x doesn't care at all about suspend/resume, and AHCI has seen several modifications in #upstream that are waiting for 2.6.17.
Jeff - : send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
