diff options
Diffstat (limited to 'drivers/media/dvb/frontends/or51211.c')
| -rw-r--r-- | drivers/media/dvb/frontends/or51211.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/media/dvb/frontends/or51211.c b/drivers/media/dvb/frontends/or51211.c index ad56a995840..531f76246e5 100644 --- a/drivers/media/dvb/frontends/or51211.c +++ b/drivers/media/dvb/frontends/or51211.c @@ -34,6 +34,8 @@ #include <linux/moduleparam.h> #include <linux/device.h> #include <linux/firmware.h> +#include <linux/string.h> +#include <linux/slab.h> #include <asm/byteorder.h> #include "dvb_frontend.h" @@ -337,6 +339,7 @@ static int or51211_read_signal_strength(struct dvb_frontend* fe, u16* strength) u8 rec_buf[2]; u8 snd_buf[4]; u8 snr_equ; + u32 signal_strength; /* SNR after Equalizer */ snd_buf[0] = 0x04; @@ -356,8 +359,11 @@ static int or51211_read_signal_strength(struct dvb_frontend* fe, u16* strength) snr_equ = rec_buf[0] & 0xff; /* The value reported back from the frontend will be FFFF=100% 0000=0% */ - *strength = (((5334 - i20Log10(snr_equ))/3+5)*65535)/1000; - + signal_strength = (((5334 - i20Log10(snr_equ))/3+5)*65535)/1000; + if (signal_strength > 0xffff) + *strength = 0xffff; + else + *strength = signal_strength; dprintk("read_signal_strength %i\n",*strength); return 0; |