[FS#1242] SATA broken on kernel 4.9 on mt7621

[LEDE Bugs]

The following task has a new comment added:

FS#1242 - SATA broken on kernel 4.9 on mt7621
User who did this - neheb (neheb)

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Let's see. Not a SATA issue. Not a pcie issue (USB is not connected through pcie). Sounds like a bug introduced in the port to 4.9. Maybe a CPU issue?
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1242#comment4037