On Thu, Jun 02, 2016 at 05:48:28PM -0700, Bjorn Andersson wrote:
> For dm uarts in pio mode tx data is transferred to the fifo register 4
> bytes at a time, but care is not taken when these 4 bytes spans the end
> of the xmit buffer so the loop might read up to 3 bytes past the buffer
> and then skip the actual data at the beginning of the buffer.
>
> Fix this by, analogous to the DMA case, make sure the chunk doesn't
> wrap the xmit buffer.
>
> Fixes: 3a878c430fd6 ("tty: serial: msm: Add TX DMA support")
> Cc: Andy Gross <[email protected]>
> Cc: Ivan Ivanov <[email protected]>
> Cc: Stephen Boyd <[email protected]>
> Cc: [email protected]
> Reported-by: Frank Rowand <[email protected]>
> Reported-by: Nicolas Dechesne <[email protected]>
> Signed-off-by: Bjorn Andersson <[email protected]>
Acked-by: Andy Gross <[email protected]>
