[PATCH linux dev-4.10 v3 03/31] drivers: fsi: sbefifo: Use __be32 for big endian values

[Andrew Jeffery]

On Thu, 2017-10-05 at 14:23 -0500, Eddie James wrote:
> From: "Edward A. James" <eajames at us.ibm.com>
> 
> Use a real __be32 value instead of u32 for big endian values.
> 
> Signed-off-by: Edward A. James <eajames at us.ibm.com>

Reviewed-by: Andrew Jeffery <andrew at aj.id.au>

> ---
>  drivers/fsi/fsi-sbefifo.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/fsi/fsi-sbefifo.c b/drivers/fsi/fsi-sbefifo.c
> index 2e45a75..c5eeace 100644
> --- a/drivers/fsi/fsi-sbefifo.c
> +++ b/drivers/fsi/fsi-sbefifo.c
> @@ -103,7 +103,7 @@ struct sbefifo_client {
>  static int sbefifo_inw(struct sbefifo *sbefifo, int reg, u32 *word)
>  {
>  	int rc;
> -	u32 raw_word;
> +	__be32 raw_word;
>  
>  	rc = fsi_device_read(sbefifo->fsi_dev, reg, &raw_word,
>  			     sizeof(raw_word));
> @@ -111,17 +111,19 @@ static int sbefifo_inw(struct sbefifo *sbefifo, int reg, u32 *word)
>  		return rc;
>  
>  	*word = be32_to_cpu(raw_word);
> +
>  	return 0;
>  }
>  
>  static int sbefifo_outw(struct sbefifo *sbefifo, int reg, u32 word)
>  {
> -	u32 raw_word = cpu_to_be32(word);
> +	__be32 raw_word = cpu_to_be32(word);
>  
>  	return fsi_device_write(sbefifo->fsi_dev, reg, &raw_word,
>  				sizeof(raw_word));
>  }
>  
> +/* Don't flip endianness of data to/from FIFO, just pass through. */
>  static int sbefifo_readw(struct sbefifo *sbefifo, u32 *word)
>  {
>  	return fsi_device_read(sbefifo->fsi_dev, SBEFIFO_DWN, word,
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 801 bytes
Desc: This is a digitally signed message part
URL: <http://lists.ozlabs.org/pipermail/openbmc/attachments/20171006/fe57af94/attachment.sig>