Messages in this thread | | | Date | Mon, 21 Jan 2008 14:14:25 +0000 | From | Alan Cox <> | Subject | Re: ATA device reset, shoud I be concerned? |
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> while IDE thinks that IRQ might be lost and complete the command if the > TF status register says so.
For PATA at least that makes a lot of sense. It would probably make the Promise driver a lot more stable too.
> It could be that the particular device doesn't raise IRQ on certain > error conditions but updates TF registers. After timeout, IDE completes > the command with the indicated error while libata ignores the status and > resets the device.
And loses the important information like media errors
> libata never touches TF register after timeout because some controllers > lock up hard if TF register is read after certain error conditions > (event the status register).
Should that not then be a per host flag ?
Alan
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