Re: [PATCH 1/2] staging: iio: ad9834: Correct phase range check

From: Dan Carpenter
Date: Tue Nov 05 2024 - 10:55:14 EST


On Tue, Nov 05, 2024 at 02:03:58PM +0000, Zicheng Qu wrote:
> The phase register for the AD9834 is 12 bits, which means the valid
> phase values range from 0 to 4095 (2^12 - 1). The current check uses a
> greater-than condition with BIT(12), which equals 4096. This allows an
> invalid phase value of 4096 to pass.
>

I tried to figure out how this looks like to the user but I didn't
figure it out right away. Please add this information to the commit
message.

> This patch corrects the check to use greater-than-or-equal-to, ensuring
> that only phase values within the valid range are accepted.
>
> Fixes: f1d05b5f68cb ("Staging: iio: Prefer using the BIT macro")

The Fixes tag is wrong. It should be:

Fixes: 12b9d5bf76bf ("Staging: IIO: DDS: AD9833 / AD9834 driver")

regards,
dan carpenter