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ath9k: remove ath9k_mod_tsf64_tu

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Remove ath9k_mod_tsf64_tu() function while we could
use div_u64_rem() function.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Janusz Dziedzic 2015-11-27 09:37:18 +01:00 committed by Kalle Valo
parent 02edab5b5f
commit 05a85a6c42
1 changed files with 4 additions and 18 deletions
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22
drivers/net/wireless/ath/ath9k/common-beacon.c
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@ -18,30 +18,16 @@
#define FUDGE 2 #define FUDGE 2
/* Calculate the modulo of a 64 bit TSF snapshot with a TU divisor */
static u32 ath9k_mod_tsf64_tu(u64 tsf, u32 div_tu)
{
u32 tsf_mod, tsf_hi, tsf_lo, mod_hi, mod_lo;
tsf_mod = tsf & (BIT(10) - 1);
tsf_hi = tsf >> 32;
tsf_lo = ((u32) tsf) >> 10;
mod_hi = tsf_hi % div_tu;
mod_lo = ((mod_hi << 22) + tsf_lo) % div_tu;
return (mod_lo << 10) | tsf_mod;
}
static u32 ath9k_get_next_tbtt(struct ath_hw *ah, u64 tsf, static u32 ath9k_get_next_tbtt(struct ath_hw *ah, u64 tsf,
unsigned int interval) unsigned int interval)
{ {
unsigned int offset; unsigned int offset, divisor;
tsf += TU_TO_USEC(FUDGE + ah->config.sw_beacon_response_time); tsf += TU_TO_USEC(FUDGE + ah->config.sw_beacon_response_time);
offset = ath9k_mod_tsf64_tu(tsf, interval); divisor = TU_TO_USEC(interval);
div_u64_rem(tsf, divisor, &offset);
return (u32) tsf + TU_TO_USEC(interval) - offset; return (u32) tsf + divisor - offset;
} }
/* /*