Re: [PATCH] amba-pl011â/dma: Add check for the residue in DMA callback

[Linus Walleij]

On Mon, Feb 20, 2012 at 2:24 AM, Chanho Min <chanho0207@xxxxxxxxx> wrote:

> In DMA-operated uart, I found that rx data can be taken by the UART
> interrupts during the DMA irq handler. pl011_int is occurred just
> before it goes inside spin_lock_irq. When it returns to the callback,
> DMA buffer already has been flushed. Then, pl011_dma_rx_chars gets
> invalid data. So I add check for the residue as the patch bellow.
>
> Signed-off-by: Chanho Min <chanho.min@xxxxxxx>

Looks correct!
Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Thanks,
Linus Walleij
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