Re: [PATCH] wifi: rt2x00: use explicitly signed type for clamping
From: Stanislaw Gruszka
Date: Wed Oct 19 2022 - 12:00:35 EST
On Tue, Oct 18, 2022 at 02:27:34PM -0600, Jason A. Donenfeld wrote:
> On some platforms, `char` is unsigned, which makes casting -7 to char
> overflow, which in turn makes the clamping operation bogus. Instead,
> deal with an explicit `s8` type, so that the comparison is always
> signed, and return an s8 result from the function as well. Note that
> this function's result is assigned to a `short`, which is always signed.
>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Cc: Stanislaw Gruszka <stf_xl@xxxxx>
> Cc: Helmut Schaa <helmut.schaa@xxxxxxxxxxxxxx>
> Cc: Kalle Valo <kvalo@xxxxxxxxxx>
> Signed-off-by: Jason A. Donenfeld <Jason@xxxxxxxxx>
I prefer s8 just because is shorter name than short :-)
Acked-by: Stanislaw Gruszka <stf_xl@xxxxx>