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Commit 7e8d8f6d authored by Michael Krufky's avatar Michael Krufky Committed by Mauro Carvalho Chehab
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[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: default avatarMichael Krufky <mkrufky@kernellabs.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 4f98480f

drivers/media/dvb/dvb-usb/mxl111sf-demod.c

+10 −0
Original line number Diff line number Diff line
@@ -370,10 +370,20 @@ static int mxl111sf_demod_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) 
	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)

{