Kuan Luo wrote:
Robert wrote:
-Hotplug/hot-unplug fails to work properly, hotplug interrupts not
raised (seemingly only on certain boards/configurations as I can't
duplicate this problem).
http://bugzilla.kernel.org/show_bug.cgi?id=8421
I occasionly encountered this problem in one port under certain system,
but didn't see this issue under other systems in the same mainboard.
After adding the operation of manually clearing the added/removed
interrupt bit in NV_INT_STATUS_CK804 register
in nv_adma_interrupt function, i saw some improvement.
The key problem is that no one who knows this controller comes to help
to solve these issue.
Given this disadvantage, i think disabling it maybe is a good choice.
I don't know whether we need to continue to provide patch for adma after
disabling adma function.
Based on all these discussions and experiences, I just checked in the
following commit, setting adma_enabled to zero:
[libata] sata_nv: disable ADMA by default
Continues to have open issues, and engineering support is extremely
difficult to come by, according to fellow NVIDIA engineers.
Signed-off-by: Jeff Garzik <jgarzik@xxxxxxxxxx>
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