Messages in this thread | | | Date | Tue, 28 Feb 2006 09:45:54 -0500 | From | Mark Lord <> | Subject | Re: [PATCH] Fixup ahci suspend / resume |
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Hannes Reinecke wrote: > Hi all, > > the current ahci doesn't handle suspend / resume cycles too well. > On certain machines the disk just locks up and refuses to work after a > resume. > > This is due to a initialisation error after resume; ahci has fo[u]r > registers containing DMA addresses (which are obviously allocated by the > kernel). Of course there is no guarantee that these addresses are > unchanged across reboots. So ahci loads the suspended image, and after > the suspended image is started the driver is presented with different > DMA addresses, whereas the chip still uses the original ones. > > This patch rearranges the suspend / resume code to properly initialise > those registers after a resume. It also contains some initialisation > fixes to make the driver behave more spec-compliant. ..
Is ahci the *only* interface afflicted with this problem? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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