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serial: tegra: update tx_circular buffer only when TX_DMA is in progress
authorPradeep Goudagunta <pgoudagunta@nvidia.com>
Fri, 6 Jun 2014 11:18:08 +0000 (16:48 +0530)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 10 Jul 2014 22:53:20 +0000 (15:53 -0700)
When channel is require to stop transmit then update the Tx circular
buffer only when DMA based transfer is in progress. If there is no
DMA based transfer then no need to update the Tx buffer.

Signed-off-by: Pradeep Goudagunta <pgoudagunta@nvidia.com>
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No differences found
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