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rtlwifi: use ktime_get_real_seconds() for suspend time

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do_gettimeofday() is deprecated and slower than necessary for the purpose
of reading the seconds. This changes rtl_op_suspend/resume to use
ktime_get_real_seconds() instead, which is simpler and avoids confusion
about whether it is y2038-safe or not.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Arnd Bergmann 2017-11-06 14:55:36 +01:00 committed by Kalle Valo
parent 3f2a162fab
commit 3c92d5517a
3 changed files with 6 additions and 9 deletions
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10
drivers/net/wireless/realtek/rtlwifi/core.c
View File

@ -550,15 +550,13 @@ static int rtl_op_suspend(struct ieee80211_hw *hw,
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
struct timeval ts;
RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG, "\n");
if (WARN_ON(!wow))
return -EINVAL;
/* to resolve s4 can not wake up*/
do_gettimeofday(&ts);
rtlhal->last_suspend_sec = ts.tv_sec;
rtlhal->last_suspend_sec = ktime_get_real_seconds();
if ((ppsc->wo_wlan_mode & WAKE_ON_PATTERN_MATCH) && wow->n_patterns)
_rtl_add_wowlan_patterns(hw, wow);
@ -577,7 +575,7 @@ static int rtl_op_resume(struct ieee80211_hw *hw)
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct timeval ts;
time64_t now;
RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG, "\n");
rtlhal->driver_is_goingto_unload = false;
@ -585,8 +583,8 @@ static int rtl_op_resume(struct ieee80211_hw *hw)
rtlhal->wake_from_pnp_sleep = true;
/* to resovle s4 can not wake up*/
do_gettimeofday(&ts);
if (ts.tv_sec - rtlhal->last_suspend_sec < 5)
now = ktime_get_real_seconds();
if (now - rtlhal->last_suspend_sec < 5)
return -1;
rtl_op_start(hw);

3
drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
View File

@ -1373,8 +1373,7 @@ static void _rtl8821ae_get_wakeup_reason(struct ieee80211_hw *hw)
ppsc->wakeup_reason = 0;
do_gettimeofday(&ts);
rtlhal->last_suspend_sec = ts.tv_sec;
rtlhal->last_suspend_sec = ktime_get_real_seconds();
switch (fw_reason) {
case FW_WOW_V2_PTK_UPDATE_EVENT:

2
drivers/net/wireless/realtek/rtlwifi/wifi.h
View File

@ -1600,7 +1600,7 @@ struct rtl_hal {
bool enter_pnp_sleep;
bool wake_from_pnp_sleep;
bool wow_enabled;
__kernel_time_t last_suspend_sec;
time64_t last_suspend_sec;
u32 wowlan_fwsize;
u8 *wowlan_firmware;