Tejun Heo wrote:
So, this is specific to SATA (the host side at least) piix && PIO READ,
right?  I think we can fit this code nicely into
piix_sata_error_handler() if we make sure that it triggers under the
right condition - after a PIO READ command fails due to HSM violation
caused by stuck DRQ.

Yeah, so far it's just PIO FROM DEVICE on a "SATA" device on ata_piix.
It *may* be more widespread than that, but we'll have to test some others.

Can you please perform similar test on a native PATA device connected to
native PATA controller?  I'm curious whether SRST makes real silicons
forget about the on-going command.

I'll dig through some other hardware here and see what I have.
This'll take a few hours.

Cheers

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