Timeouts on ICH7 PATA drive with ata_piix; ide_generic works perfectly

[Keenan Pepper]

I just upgraded the kernel on my System76 Gazelle laptop (basically an
ASUS Z62FP without the Microsoft tax) and the hard drive began
freezing every few minutes. I blacklisted ata_piix and the problem
went away, so that really narrows down where the bug has to be. Here's
the relevant part of the dmesg:

[  924.000000] ata1.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[  924.000000] ata1.01: cmd a0/01:00:00:00:00/00:00:00:00:00/b0 tag 0
cdb 0x25 data 8 in
[  924.000000]          res 40/00:03:00:00:00/00:00:00:00:00/b0 Emask
0x4 (timeout)
[  931.004000] ata1: port is slow to respond, please be patient (Status 0xd0)
[  954.028000] ata1: port failed to respond (30 secs, Status 0xd0)
[  954.028000] ata1: soft resetting port
[  954.380000] ata1.00: configured for UDMA/100
[  954.560000] ata1.01: configured for UDMA/33
[  954.560000] ata1: EH complete

Complete dmesg and lspci -vvx are attached; please CC me because I'm
not subscribed. My sincere apologies if this is already fixed in the
main kernel.

Keenan Pepper

Attachment: dmesg
Description: Binary data

Attachment: lspci
Description: Binary data