diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/dvb-frontends/lgdt3306a.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/media/dvb-frontends/lgdt3306a.c b/drivers/media/dvb-frontends/lgdt3306a.c index 9c80d4c26381..ad483be1b64e 100644 --- a/drivers/media/dvb-frontends/lgdt3306a.c +++ b/drivers/media/dvb-frontends/lgdt3306a.c @@ -1386,11 +1386,15 @@ static u8 lgdt3306a_get_packet_error(struct lgdt3306a_state *state) return val; } +static const u32 valx_x10[] = { + 10, 11, 13, 15, 17, 20, 25, 33, 41, 50, 59, 73, 87, 100 +}; +static const u32 log10x_x1000[] = { + 0, 41, 114, 176, 230, 301, 398, 518, 613, 699, 771, 863, 939, 1000 +}; + static u32 log10_x1000(u32 x) { - static u32 valx_x10[] = { 10, 11, 13, 15, 17, 20, 25, 33, 41, 50, 59, 73, 87, 100 }; - static u32 log10x_x1000[] = { 0, 41, 114, 176, 230, 301, 398, 518, 613, 699, 771, 863, 939, 1000 }; - static u32 nelems = sizeof(valx_x10)/sizeof(valx_x10[0]); u32 diff_val, step_val, step_log10; u32 log_val = 0; u32 i; @@ -1418,11 +1422,11 @@ static u32 log10_x1000(u32 x) return log_val; /* don't need to interpolate */ /* find our place on the log curve */ - for (i = 1; i < nelems; i++) { + for (i = 1; i < ARRAY_SIZE(valx_x10); i++) { if (valx_x10[i] >= x) break; } - if (i == nelems) + if (i == ARRAY_SIZE(valx_x10)) return log_val + log10x_x1000[i - 1]; diff_val = x - valx_x10[i-1]; |