Re: [PATCH] staging: iio: ad2s1200: Fix sign extension

[Jonathan Cameron]

On 23/01/15 08:56, Lars-Peter Clausen wrote:
> On 01/23/2015 12:09 AM, Rasmus Villemoes wrote:
>> The line above makes vel a 12-bit quantity (st->rx[] is u8). The
>> intention is to sign-extend vel using bit 11 as the sign bit. But
>> because of C's promotion rules "vel = (vel << 4) >> 4;" is actually a
>> no-op, since vel is promoted to int before the inner
>> shift. sign_extend32 works equally well for 8 and 16 bits types, so
>> use that.
>>
>> Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
> 
> Acked-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
Applied to fixes-togreg branch of iio.git.

Thanks,

Jonathan

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