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authorJulia Lawall <julia@diku.dk>2009-08-01 16:48:41 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-09-12 12:19:08 -0300
commit75b697f747b14b0c6afae48ee0f5e605abd2df4c (patch)
tree3812e853ff3d8758cded2fdfebb58bdec76babfc
parent166987c6987a25a95cef6889d24088f0eb2daa36 (diff)
V4L/DVB (12483): Use DIV_ROUND_CLOSEST
The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d but is perhaps more readable. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @haskernel@ @@ @depends on haskernel@ expression x,__divisor; @@ - (((x) + ((__divisor) / 2)) / (__divisor)) + DIV_ROUND_CLOSEST(x,__divisor) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/media/dvb/frontends/dib7000p.c2
-rw-r--r--drivers/media/dvb/frontends/stb6100.c4
-rw-r--r--drivers/media/dvb/frontends/tda10021.c2
-rw-r--r--drivers/media/dvb/frontends/ves1820.c2
-rw-r--r--drivers/media/dvb/pluto2/pluto2.c2
-rw-r--r--drivers/media/video/tuner-core.c4
-rw-r--r--drivers/media/video/v4l1-compat.c5
7 files changed, 11 insertions, 10 deletions
diff --git a/drivers/media/dvb/frontends/dib7000p.c b/drivers/media/dvb/frontends/dib7000p.c
index 8217e5b..fc96fbf 100644
--- a/drivers/media/dvb/frontends/dib7000p.c
+++ b/drivers/media/dvb/frontends/dib7000p.c
@@ -883,7 +883,7 @@ static void dib7000p_spur_protect(struct dib7000p_state *state, u32 rf_khz, u32
255, 255, 255, 255, 255, 255};
u32 xtal = state->cfg.bw->xtal_hz / 1000;
- int f_rel = ( (rf_khz + xtal/2) / xtal) * xtal - rf_khz;
+ int f_rel = DIV_ROUND_CLOSEST(rf_khz, xtal) * xtal - rf_khz;
int k;
int coef_re[8],coef_im[8];
int bw_khz = bw;
diff --git a/drivers/media/dvb/frontends/stb6100.c b/drivers/media/dvb/frontends/stb6100.c
index 1ed5a7d..60ee18a 100644
--- a/drivers/media/dvb/frontends/stb6100.c
+++ b/drivers/media/dvb/frontends/stb6100.c
@@ -367,7 +367,9 @@ static int stb6100_set_frequency(struct dvb_frontend *fe, u32 frequency)
/* N(I) = floor(f(VCO) / (f(XTAL) * (PSD2 ? 2 : 1))) */
nint = fvco / (state->reference << psd2);
/* N(F) = round(f(VCO) / f(XTAL) * (PSD2 ? 2 : 1) - N(I)) * 2 ^ 9 */
- nfrac = (((fvco - (nint * state->reference << psd2)) << (9 - psd2)) + state->reference / 2) / state->reference;
+ nfrac = DIV_ROUND_CLOSEST((fvco - (nint * state->reference << psd2))
+ << (9 - psd2),
+ state->reference);
dprintk(verbose, FE_DEBUG, 1,
"frequency = %u, srate = %u, g = %u, odiv = %u, psd2 = %u, fxtal = %u, osm = %u, fvco = %u, N(I) = %u, N(F) = %u",
frequency, srate, (unsigned int)g, (unsigned int)odiv,
diff --git a/drivers/media/dvb/frontends/tda10021.c b/drivers/media/dvb/frontends/tda10021.c
index f5d7b32..6c1dbf9 100644
--- a/drivers/media/dvb/frontends/tda10021.c
+++ b/drivers/media/dvb/frontends/tda10021.c
@@ -176,7 +176,7 @@ static int tda10021_set_symbolrate (struct tda10021_state* state, u32 symbolrate
tmp = ((symbolrate << 4) % FIN) << 8;
ratio = (ratio << 8) + tmp / FIN;
tmp = (tmp % FIN) << 8;
- ratio = (ratio << 8) + (tmp + FIN/2) / FIN;
+ ratio = (ratio << 8) + DIV_ROUND_CLOSEST(tmp, FIN);
BDR = ratio;
BDRI = (((XIN << 5) / symbolrate) + 1) / 2;
diff --git a/drivers/media/dvb/frontends/ves1820.c b/drivers/media/dvb/frontends/ves1820.c
index 6e78e48..550a07a 100644
--- a/drivers/media/dvb/frontends/ves1820.c
+++ b/drivers/media/dvb/frontends/ves1820.c
@@ -165,7 +165,7 @@ static int ves1820_set_symbolrate(struct ves1820_state *state, u32 symbolrate)
tmp = ((symbolrate << 4) % fin) << 8;
ratio = (ratio << 8) + tmp / fin;
tmp = (tmp % fin) << 8;
- ratio = (ratio << 8) + (tmp + fin / 2) / fin;
+ ratio = (ratio << 8) + DIV_ROUND_CLOSEST(tmp, fin);
BDR = ratio;
BDRI = (((state->config->xin << 5) / symbolrate) + 1) / 2;
diff --git a/drivers/media/dvb/pluto2/pluto2.c b/drivers/media/dvb/pluto2/pluto2.c
index 598eaf8..80d14a0 100644
--- a/drivers/media/dvb/pluto2/pluto2.c
+++ b/drivers/media/dvb/pluto2/pluto2.c
@@ -439,7 +439,7 @@ static inline u32 divide(u32 numerator, u32 denominator)
if (denominator == 0)
return ~0;
- return (numerator + denominator / 2) / denominator;
+ return DIV_ROUND_CLOSEST(numerator, denominator);
}
/* LG Innotek TDTE-E001P (Infineon TUA6034) */
diff --git a/drivers/media/video/tuner-core.c b/drivers/media/video/tuner-core.c
index 5375942..2816f18 100644
--- a/drivers/media/video/tuner-core.c
+++ b/drivers/media/video/tuner-core.c
@@ -819,8 +819,8 @@ static int tuner_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
fe_tuner_ops->get_frequency(&t->fe, &abs_freq);
f->frequency = (V4L2_TUNER_RADIO == t->mode) ?
- (abs_freq * 2 + 125/2) / 125 :
- (abs_freq + 62500/2) / 62500;
+ DIV_ROUND_CLOSEST(abs_freq * 2, 125) :
+ DIV_ROUND_CLOSEST(abs_freq, 62500);
return 0;
}
f->frequency = (V4L2_TUNER_RADIO == t->mode) ?
diff --git a/drivers/media/video/v4l1-compat.c b/drivers/media/video/v4l1-compat.c
index 02f2a6d..761fbd6 100644
--- a/drivers/media/video/v4l1-compat.c
+++ b/drivers/media/video/v4l1-compat.c
@@ -76,9 +76,8 @@ get_v4l_control(struct file *file,
dprintk("VIDIOC_G_CTRL: %d\n", err);
return 0;
}
- return ((ctrl2.value - qctrl2.minimum) * 65535
- + (qctrl2.maximum - qctrl2.minimum) / 2)
- / (qctrl2.maximum - qctrl2.minimum);
+ return DIV_ROUND_CLOSEST((ctrl2.value-qctrl2.minimum) * 65535,
+ qctrl2.maximum - qctrl2.minimum);
}
return 0;
}