[PATCH] staging: speakup: signedness bug in spk_ttyio_in_nowait()

[Samuel Thibault]

On most of the common arches char is signed so it can't ever == 0xff.
Let's fix this by making it a u8.
Fixes: 6b9ad1c742bf ("staging: speakup: add send_xchar, tiocmset and input functionality for tty")
diff --git a/drivers/staging/speakup/spk_ttyio.c b/drivers/staging/speakup/spk_ttyio.c
index 6e0f042f6a44..8ed7c71c712f 100644
--- a/drivers/staging/speakup/spk_ttyio.c
+++ b/drivers/staging/speakup/spk_ttyio.c
@@ -220,7 +220,7 @@ static unsigned char spk_ttyio_in(void)
static unsigned char spk_ttyio_in_nowait(void)
{
- char rv = ttyio_in(0);
+ u8 rv = ttyio_in(0);
return (rv == 0xff) ? 0 : rv;
}

--
Samuel
Now, it we had this sort of thing:
yield -a for yield to all traffic
yield -t for yield to trucks
yield -f for yield to people walking (yield foot)
yield -d t* for yield on days starting with t
...you'd have a lot of dead people at intersections, and traffic jams you
wouldn't believe...
(Discussion in comp.os.linux.misc on the intuitiveness of commands.)