[PATCH v2] hwmon: (lm90) Switch channel parsing to fwnode APIs

[Flaviu Nistor <flaviu.nistor@gmail.com>]

On Fri, 17 Jul 2026 09:49, sashiko-bot wrote:
>Thank you for your contribution! Sashiko AI review found 2 potential issue(=
>s) to consider:
>
>New issues:
>- [Low] Incompatible pointer type causing build failure
>
>Pre-existing issues:
>- [Critical] Sysfs read triggers NULL pointer dereference via uninitialized=
> hwmon_dev
>--
>
>--- Patch [1]: [PATCH v2] hwmon: (lm90) Switch channel parsing to fwnode AP=
>Is ---
>commit 3d5d792e5529b3545ccefc21f7dfd9c2acecc999
>Author: Flaviu Nistor <flaviu.nistor@gmail.com>
>
>hwmon: (lm90) Switch channel parsing to fwnode APIs
>   =20
>This commit replaces OF property handling with fwnode APIs in the probe
>function to read channel properties. This improves compatibility by no long=
>er
>limiting it to Device Tree.
>
>Link: https://lore.kernel.org/all/20260713190659.4511-1-flaviu.nistor@gmail=
>.com/
>
>> diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
>> index 4b9c0ccdf2609..7d4b8e61bec51 100644
>> --- a/drivers/hwmon/lm90.c
>> +++ b/drivers/hwmon/lm90.c
>[ ... ]
>> @@ -2701,27 +2701,27 @@ static int lm90_probe_channel_from_dt(struct i2c_=
>client *client,
>[ ... ]
>> -=09err =3D of_property_read_s32(child, "temperature-offset-millicelsius"=
>>, &val);
>> +=09err =3D fwnode_property_read_u32(child, "temperature-offset-millicels=
>ius", &val);
>
>[Severity: Low]
>Will this cause a build failure or compiler warning?
>
>In lm90_probe_channel(), val is declared as an s32, but it is being passed
>to fwnode_property_read_u32() which expects a u32 pointer. This pointer typ=
>e
>mismatch can trigger a -Wincompatible-pointer-types error in modern builds.

This is absolutely true and I can't understand how this got into the patch since
I have test is. I will send a v3 correcting s32 to u32.
Sorry for this!

Best regards,
Flaviu