[PATCH] staging: comedi: usbdux: fix sparse endianness warnings
Ian Abbott
abbotti at mev.co.uk
Sat Aug 30 10:40:51 UTC 2014
On 30/08/14 02:40, Chase Southwood wrote:
> Sparse has many warnings like:
>
> drivers/staging/comedi/drivers/usbdux.c:366:32: warning: cast to
> restricted __le16
>
> on lines on which devpriv->in_buf or devpriv->insn_buf are passed to
> le16_to_cpu(). This suggests that both of these variables should actually
> be of type __le16.
>
> Signed-off-by: Chase Southwood <chase.southwood at gmail.com>
> Cc: Ian Abbott <abbotti at mev.co.uk>
> Cc: H Hartley Sweeten <hsweeten at visionengravers.com>
> ---
> This is, as usual, compile tested only. I tried to verify as best as I
> could that this is a sane change, but I am unable to test on the hardware.
>
> drivers/staging/comedi/drivers/usbdux.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/comedi/drivers/usbdux.c b/drivers/staging/comedi/drivers/usbdux.c
> index 053bc50..e1a19222 100644
> --- a/drivers/staging/comedi/drivers/usbdux.c
> +++ b/drivers/staging/comedi/drivers/usbdux.c
> @@ -198,9 +198,9 @@ struct usbdux_private {
> /* size of the PWM buffer which holds the bit pattern */
> int pwm_buf_sz;
> /* input buffer for the ISO-transfer */
> - uint16_t *in_buf;
> + __le16 *in_buf;
> /* input buffer for single insn */
> - uint16_t *insn_buf;
> + __le16 *insn_buf;
>
> unsigned int ao_readback[USBDUX_NUM_AO_CHAN];
>
>
That seems fine. Perhaps the variable 'p' in usbdux_ao_insn_write()
should also be of type '__le16 *'?
Reviewed-by: Ian Abbott <abbotti at mev.co.uk>
--
-=( Ian Abbott @ MEV Ltd. E-mail: <abbotti at mev.co.uk> )=-
-=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=-
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