Armin Wolf 4d9983dee5 hwmon: (dell-smm) Make fan/temp sensor number a u8
Right now, we only use bits 0 to 7 of the fan/temp sensor number
by doing number & 0xff. Passing the value as a u8 makes this
step unnecessary. Also add checks to the ioctl handler since
users might get confused when passing 0x00000101 does the same
as passing 0x00000001.

Tested on a Dell Inspiron 3505.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Reviewed-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20220215191113.16640-4-W_Armin@gmx.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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