[PATCH 0/1] UBUNTU: SAUCE: Increase ATA_TMOUT_FF_WAIT to 5 seconds.

[TJ]

Some users are experiencing kernel oops upon resume from suspend due to
slow ATA devices:

[10692.148085] sd 0:0:0:0: [sda] Starting disk
[10697.032030] ata1: link is slow to respond, please be patient (ready=0)
[10698.992081] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[10699.338461] WARNING: at /build/buildd/linux-2.6.27/kernel/power/main.c:176 suspend_test_finish+0x74/0x80()

https://bugs.edge.launchpad.net/buga/286672

There was a related bug #318978 "Hard drive in Studio XPS 13 and 16
cause a 17-18s resume time" which applied a patch (commit b65db6fd5d) to
increase ATA_TMOUT_PMP_SRST_WAIT to 5 seconds. In that case it was
increasing the time allowed for the soft reset.

https://bugs.edge.launchpad.net/bugs/331415

I suspect this issue could be solved by increasing the maximum
ATA_TMOUT_FF_WAIT to 5 seconds in ata_wait_ready().

Please review the issue and the proposed patch which follows.

TJ.