tree 149e9e339cb29f788e657384670eaca0da0648ed
parent ec5a11a91eecd81ef19b8044a243b4ea56c809e6
author Peter Hurley <peter@hurleysoftware.com> 1460265273 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1462033615 -0700

serial: 8250: Validate dmaengine tx chan meets requirements

8250 dma support requires the dmaegine driver support terminate.
Query slave caps to determine if necessary commands/properties are
supported; disable dma if not.

Note this means dmaengine driver must support slave caps reporting
as well.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>