On Fri, May 30, 2014 at 09:27:20AM +, Wang, Jiada (ESD) wrote:
> Hi Shijie
>
> After apply this patch into our kernel,
> We are facing data hang issue when sending big size file (2M used in test) to
> uart port
> Note: Rx port is also keep receiving data.
>
> After read the implementation
Subject: [PATCH 1/2] serial: imx: remove the DMA wait queue
The DMA wait queue makes the code very complicated:
For RX, the @->stop_rx hook does not really stop the RX;
For TX, the @->stop_tx hook does not really stop the TX.
The above make the imx_shutdown has to wait the RX/TX DMA to be fi
Subject: [PATCH 1/2] serial: imx: remove the DMA wait queue
The DMA wait queue makes the code very complicated:
For RX, the @-stop_rx hook does not really stop the RX;
For TX, the @-stop_tx hook does not really stop the TX.
The above make the imx_shutdown has to wait the RX/TX DMA to be finished
On Fri, May 30, 2014 at 09:27:20AM +, Wang, Jiada (ESD) wrote:
Hi Shijie
After apply this patch into our kernel,
We are facing data hang issue when sending big size file (2M used in test) to
uart port
Note: Rx port is also keep receiving data.
After read the implementation of
The DMA wait queue makes the code very complicated:
For RX, the @->stop_rx hook does not really stop the RX;
For TX, the @->stop_tx hook does not really stop the TX.
The above make the imx_shutdown has to wait the RX/TX DMA to be finished.
In order to make code more simple, this patch
The DMA wait queue makes the code very complicated:
For RX, the @-stop_rx hook does not really stop the RX;
For TX, the @-stop_tx hook does not really stop the TX.
The above make the imx_shutdown has to wait the RX/TX DMA to be finished.
In order to make code more simple, this patch removes
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