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| author |   Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2013-12-10 14:54:47 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-17 09:36:23 -0800 |
| commit | c25a1ad7077ab9914bad1374df8b9cdb9bf5f0ad (patch) | |
| tree | 6fa1a82f074d90b0ac73a3bd2af06f519d365b14 | |
| parent | serial: pl011: (cosmetic) remove superfluous register write (diff) | |
| download | linux-dev-c25a1ad7077ab9914bad1374df8b9cdb9bf5f0ad.tar.xz linux-dev-c25a1ad7077ab9914bad1374df8b9cdb9bf5f0ad.zip | |
serial: pl011: fix fall back from DMA to interrupt mode
When falling back from DMA to interrupt mode the receive interrupt has to
be re-enabled to catch new incoming data.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/amba-pl011.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index ea6c2a3798ff..d58783d364e3 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -967,6 +967,8 @@ static void pl011_dma_rx_poll(unsigned long args) spin_lock_irqsave(&uap->port.lock, flags); pl011_dma_rx_stop(uap); + uap->im |= UART011_RXIM; + writew(uap->im, uap->port.membase + UART011_IMSC); spin_unlock_irqrestore(&uap->port.lock, flags); uap->dmarx.running = false; |