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V4L/DVB (11898): cx18: Perform 64 bit divide so it works for 32 bit systems

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Thanks to David Ward and Mike Krufky for reporting the problem and
debugging this as an unresolved symbol due to a 64 bit divide on a 32 bit
system.  David Ward provided the content of this patch; Andy Walls only
performed some cosmetic edits.

Reported-by: David Ward <david.ward@gatech.edu>
Signed-off-by: David Ward <david.ward@gatech.edu>
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Andy Walls 2009-05-29 20:54:02 -03:00 committed by Mauro Carvalho Chehab
parent 75c74d1c78
commit 9ad4c6551b
1 changed files with 4 additions and 1 deletions
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5
drivers/media/video/cx18/cx18-av-core.c
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@ -447,6 +447,7 @@ void cx18_av_std_setup(struct cx18 *cx)
if (pll_post) {
int fsc, pll;
u64 tmp;
pll = (28636360L * ((((u64)pll_int) << 25) + pll_frac)) >> 25;
pll /= pll_post;
@ -459,7 +460,9 @@ void cx18_av_std_setup(struct cx18 *cx)
"= %d.%03d\n", src_decimation / 256,
((src_decimation % 256) * 1000) / 256);
fsc = ((((u64)sc) * 28636360)/src_decimation) >> 13L;
tmp = 28636360 * (u64) sc;
do_div(tmp, src_decimation);
fsc = tmp >> 13;
CX18_DEBUG_INFO_DEV(sd,
"Chroma sub-carrier initial freq = %d.%06d "
"MHz\n", fsc / 1000000, fsc % 1000000);