[PATCH 1/3] rtlwifi: fix uninitialized rtlhal->last_suspend_sec time

[Arnd Bergmann]

We set rtlhal->last_suspend_sec to an uninitialized stack variable,
but unfortunately gcc never warned about this, I only found it
while working on another patch. I opened a gcc bug for this.

Presumably the value of rtlhal->last_suspend_sec is not all that
important, but it does get used, so we probably want the
patch backported to stable kernels.

Cc: sta...@vger.kernel.org
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82839
Signed-off-by: Arnd Bergmann 
---
 drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c 
b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
index 60c82a5b51cd..20ffe856180e 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
@@ -1373,6 +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;
 
switch (fw_reason) {
-- 
2.9.0

Re: [PATCH 1/3] rtlwifi: fix uninitialized rtlhal->last_suspend_sec time

[Larry Finger]

On 11/06/2017 07:55 AM, Arnd Bergmann wrote:

We set rtlhal->last_suspend_sec to an uninitialized stack variable,
but unfortunately gcc never warned about this, I only found it
while working on another patch. I opened a gcc bug for this.

Presumably the value of rtlhal->last_suspend_sec is not all that
important, but it does get used, so we probably want the
patch backported to stable kernels.

Cc: sta...@vger.kernel.org
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82839
Signed-off-by: Arnd Bergmann 


For all three of these patches:

Acked-by: Larry Finger 

Thanks,

Larry


---
  drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c | 1 +
  1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c 
b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
index 60c82a5b51cd..20ffe856180e 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
@@ -1373,6 +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;
  
  	switch (fw_reason) {