]> git.baikalelectronics.ru Git - kernel.git/commit
serial: 8250: don't change the fifo trigger level when using dma
authorHeikki Krogerus <heikki.krogerus@linux.intel.com>
Thu, 5 Sep 2013 14:34:52 +0000 (17:34 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 26 Sep 2013 21:27:24 +0000 (14:27 -0700)
commitfa4587bf6a3490f446d9087a8c6f98aaa98ad33f
tree073d000be0dea568b0da673a79e7f6a1f34ac211
parentc2ca5642303d3bda5483689a0873d9b94598a963
serial: 8250: don't change the fifo trigger level when using dma

DMA engines usually expect the fifo trigger level to be
aligned with the burst size. It should not be changed even
with small baud rates. This will fix an issue with
Designware DMA engine where the data can not be transferred
over UART with lower baud rates then 2400.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/8250/8250_core.c