[U-Boot] [PATCH] SPI: Fix 32 bit transfers in mxc_spi.c

[Wolfgang Denk <wd@denx.de>]

Dear Guennadi,

In message <1257965907-5622-1-git-send-email-lilja.magnus@gmail.com> Magnus Lilja wrote:
> Commit f9b6a1575d9f1ca192e4cb60e547aa66f08baa3f,  "i.MX31: fix SPI
> driver for shorter than 32 bit" broke 32 bit transfers. This patch
> makes single 32 bit transfer work again.
> 
> Tested on i.MX31 Litekit and i.MX31 PDK using 32 bit transfers to
> the MC13783/ATLAS chip (using the 'date' command).
> 
> Signed-off-by: Magnus Lilja <lilja.magnus@gmail.com>
> Cc: Guennadi Liakhovetski <lg@denx.de>
> 
> ---
> 
> I don't think transfers larger than 32 bits will work. It seems
> like they worked in the original driver, but the above commit broke that.
> This patch does not try to fix that problem.
> 
>  drivers/spi/mxc_spi.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/spi/mxc_spi.c b/drivers/spi/mxc_spi.c
> index fad9840..8b5d4be 100644
> --- a/drivers/spi/mxc_spi.c
> +++ b/drivers/spi/mxc_spi.c
> @@ -142,6 +142,8 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
>  				*(u8 *)din = data;
>  			else if (bitlen < 17)
>  				*(u16 *)din = data;
> +			else
> +				*in_l = data;
>  		}
>  	}

Could you please comment ?

Thanks in advance.

Best regards,

Wolfgang Denk

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