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| author | Michael Krufky <mkrufky@kernellabs.com> | 2011-10-20 15:42:34 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-11-03 07:42:43 -0200 |
| commit | 7e8d8f6df3e8f26547b3b986c3946b1f8a6bd6c1 (patch) | |
| tree | df4e0591f0f8fcb760636c3fefc116ba5afd0e50 /drivers/media/dvb/dvb-usb/mxl111sf-demod.c | |
| parent | 4f98480f32fb11af40de3947cc5d500ec9691726 (diff) | |
| download | linux-7e8d8f6df3e8f26547b3b986c3946b1f8a6bd6c1.tar.gz linux-7e8d8f6df3e8f26547b3b986c3946b1f8a6bd6c1.tar.bz2 linux-7e8d8f6df3e8f26547b3b986c3946b1f8a6bd6c1.zip | |
[media] mxl111sf: disable snr / ber calculations for DVB-T
Leaving this code enabled breaks the build on some architectures,
and we shouldn't have any floating point math in the kernel, anyway.
These macros need to be re-written, but it's harmless to simply
return zero for now.
Signed-off-by: Michael Krufky <mkrufky@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/dvb-usb/mxl111sf-demod.c')
| -rw-r--r-- | drivers/media/dvb/dvb-usb/mxl111sf-demod.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-usb/mxl111sf-demod.c b/drivers/media/dvb/dvb-usb/mxl111sf-demod.c index 330774e346ab..25e75c1ae36e 100644 --- a/drivers/media/dvb/dvb-usb/mxl111sf-demod.c +++ b/drivers/media/dvb/dvb-usb/mxl111sf-demod.c @@ -370,10 +370,20 @@ fail: return ret; } +#ifdef MXL111SF_DEMOD_ENABLE_CALCULATIONS +/* FIXME: leaving this enabled breaks the build on some architectures, + * and we shouldn't have any floating point math in the kernel, anyway. + * + * These macros need to be re-written, but it's harmless to simply + * return zero for now. */ #define CALCULATE_BER(avg_errors, count) \ ((u32)(avg_errors * 4)/(count*64*188*8)) #define CALCULATE_SNR(data) \ ((u32)((10 * (u32)data / 64) - 2.5)) +#else +#define CALCULATE_BER(avg_errors, count) 0 +#define CALCULATE_SNR(data) 0 +#endif static int mxl111sf_demod_read_ber(struct dvb_frontend *fe, u32 *ber) { |