media: dvb-frontends: Use DIV_ROUND_CLOSEST directly to make it readable

The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
but is perhaps more readable.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

diff --git a/drivers/media/dvb-frontends/mt312.c b/drivers/media/dvb-frontends/mt312.c
index 7cae7d63203026f5b7c6489453455f5653a90f2c..d43a67045dbe77421c6b73f290a1fafc5de3789c 100644 (file)
--- a/drivers/media/dvb-frontends/mt312.c
+++ b/drivers/media/dvb-frontends/mt312.c
@@ -135,11 +135,6 @@ static inline int mt312_writereg(struct mt312_state *state,
        return mt312_write(state, reg, &tmp, 1);
 }
 
-static inline u32 mt312_div(u32 a, u32 b)
-{
-       return (a + (b / 2)) / b;
-}
-
 static int mt312_reset(struct mt312_state *state, const u8 full)
 {
        return mt312_writereg(state, RESET, full ? 0x80 : 0x40);
@@ -187,7 +182,7 @@ static int mt312_get_symbol_rate(struct mt312_state *state, u32 *sr)
                monitor = (buf[0] << 8) | buf[1];
 
                dprintk("sr(auto) = %u\n",
-                      mt312_div(monitor * 15625, 4));
+                       DIV_ROUND_CLOSEST(monitor * 15625, 4));
        } else {
                ret = mt312_writereg(state, MON_CTRL, 0x05);
                if (ret < 0)
@@ -291,10 +286,10 @@ static int mt312_initfe(struct dvb_frontend *fe)
        }
 
        /* SYS_CLK */
-       buf[0] = mt312_div(state->xtal * state->freq_mult * 2, 1000000);
+       buf[0] = DIV_ROUND_CLOSEST(state->xtal * state->freq_mult * 2, 1000000);
 
        /* DISEQC_RATIO */
-       buf[1] = mt312_div(state->xtal, 22000 * 4);
+       buf[1] = DIV_ROUND_CLOSEST(state->xtal, 22000 * 4);
 
        ret = mt312_write(state, SYS_CLK, buf, sizeof(buf));
        if (ret < 0)
@@ -610,7 +605,7 @@ static int mt312_set_frontend(struct dvb_frontend *fe)
        }
 
        /* sr = (u16)(sr * 256.0 / 1000000.0) */
-       sr = mt312_div(p->symbol_rate * 4, 15625);
+       sr = DIV_ROUND_CLOSEST(p->symbol_rate * 4, 15625);
 
        /* SYM_RATE */
        buf[0] = (sr >> 8) & 0x3f;