media: stv0288: use explicitly signed char

With char becoming unsigned by default, and with `char` alone being
ambiguous and based on architecture, signed chars need to be marked
explicitly as such. Use `s8` and `u8` types here, since that's what
surrounding code does. This fixes:

drivers/media/dvb-frontends/stv0288.c:471 stv0288_set_frontend() warn: assigning (-9) to unsigned variable 'tm'
drivers/media/dvb-frontends/stv0288.c:471 stv0288_set_frontend() warn: we never enter this loop

Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-media@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

diff --git a/drivers/media/dvb-frontends/stv0288.c b/drivers/media/dvb-frontends/stv0288.c
index 3d54a0ec86afdcbff3b4f8408159310d1a77b4ef..3ae1f3a2f1420e7f38a22d3de83620b2b371dc86 100644 (file)
--- a/drivers/media/dvb-frontends/stv0288.c
+++ b/drivers/media/dvb-frontends/stv0288.c
@@ -440,9 +440,8 @@ static int stv0288_set_frontend(struct dvb_frontend *fe)
        struct stv0288_state *state = fe->demodulator_priv;
        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 
-       char tm;
-       unsigned char tda[3];
-       u8 reg, time_out = 0;
+       u8 tda[3], reg, time_out = 0;
+       s8 tm;
 
        dprintk("%s : FE_SET_FRONTEND\n", __func__);