Messages in this thread | | | Date | Fri, 17 May 2002 00:07:50 -0700 | From | Mike Fedyk <> | Subject | Re: [PATCH] 2.5.15 IDE 61 |
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On Wed, May 15, 2002 at 12:55:37PM +0100, Neil Conway wrote: > You can (and must) safely "touch the cable" in between TCQ commands in > the right circumstances. You are therefore touching the cable while the > hwgroup is busy, hence my suggestion that the flag we use to prevent > touching the cable during DMA should be named something other than busy. >
Ahh, but with TCQ the concept of busy changes. The wire (simplified) is only busy when the tags are being transfered, otherwise the cable is unused unless the cable has been "locked" by one of the devices. - 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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