i.MX27 SPI tx fifo underrun

[Robert Schwebel]

On Thu, Apr 14, 2011 at 05:29:57PM +0200, Jurgen Braam wrote:
> while trying to write to an at25 eeprom connected via SPI on an
> i.MX27, I ran into a TX FIFO underrun. In spi_imx_isr() the variable
> spi_imx->txfifo gets rather large as a result of an unsigned integer
> underflow, resulting in a feels-like-endless loop.
> 
> The following patch fixes the problem in our case:
> 
> --- a/drivers/spi/spi_imx.c
> +++ b/drivers/spi/spi_imx.c
> @@ -407,7 +407,7 @@ static void __maybe_unused

Please add your Signed-off-by: when sending patches.

rsc
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