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V4L/DVB (9447): stb6100: improve rounding

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Optimization: Round the requested value to achieve a
+/-1MHz error instead of +0/-2MHz

Signed-off-by: Reinhard Nissl <rnissl@gmx.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Reinhard Nissl 2008-01-21 16:15:14 -03:00 committed by Mauro Carvalho Chehab
parent 02ec9d8ff4
commit 6f6c268b0f
1 changed files with 1 additions and 1 deletions
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2
drivers/media/dvb/frontends/stb6100.c
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@ -276,7 +276,7 @@ static int stb6100_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
else if (bandwidth <= 5000000) /* bw/2 min = 5Mhz for F=0 */ else if (bandwidth <= 5000000) /* bw/2 min = 5Mhz for F=0 */
tmp = 0; tmp = 0;
else /* if 5 < bw/2 < 36 */ else /* if 5 < bw/2 < 36 */
tmp = bandwidth / 1000000 - 5; tmp = (bandwidth + 500000) / 1000000 - 5;
/* Turn on LPF bandwidth setting clock control, /* Turn on LPF bandwidth setting clock control,
* set bandwidth, wait 10ms, turn off. * set bandwidth, wait 10ms, turn off.