A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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Filename Latest commit message Latest commit date
Krunal Soni 287dee3f43 qcacmn: Disable CE-IRQ interrupt before cleaning up the tasklets 
Current driver calls ce_tasklet_kill API which does
tasklet_disable() first and then does tasklet_kill which invites
race condition as follows.

1) Lets say CPU-0 is executing ce_tasklet_kill() API
   for CE1 (in process ctx) to kill any tasklets associated with CE1-IRQ

2) t1 time- CPU-1 has scheduled the tasklet as part of rescheduled API
   ce_schedule_tasklet(), so this tasklet goes to be scheduled list of
   kernel.

3) t2 time- CPU-0 executes tasklet_disable() and about to execute
   tasklet_kill()

4) t3 time - kernel got a chance and wants to run the tasklet which was
   scheduled at t1 time but it can't because t2 time, tasklet has been
   disable.

5) t5 time- CPU-0 now executes tasklet_kill which checks if any
   tasklet which is in "SCHEDULE" state to go to "RUNNING" state and
   finish and tasklet on CPU-1 can't go to "RUNNING" state due to
   tasklet_disable(), driver is stuck waiting for it to finish.

Fix the situation by removing tasklet_disable()

Change-Id: I3ac56975dc1f6538962060dd20e881c43e7516ca
CRs-Fixed: 2301368
2018-09-05 23:55:47 -07:00
cfg qcacmn: Move cfg list create to dispatcher init 2018-08-22 11:59:34 -07:00
dp qcacmn: Remove vdev wds enable check for intra-bss fwd 2018-09-05 09:50:07 -07:00
ftm qcacmn: Add FTM build flags 2018-08-29 14:03:02 -07:00
global_lmac_if qcacmn: Add spectral scan feature flag 2018-06-06 23:49:17 -07:00
hal/wifi3.0 qcacmn: Add apis to set and get ba ageing timeout 2018-09-04 11:53:43 -07:00
hif qcacmn: Disable CE-IRQ interrupt before cleaning up the tasklets 2018-09-05 23:55:47 -07:00
htc qcacmn: Remove QDF_BUG in htc_completion_handler 2018-08-28 13:09:53 -07:00
init_deinit/dispatcher qcacmn: Enable configuration component in dispatcher 2018-07-05 14:14:03 -07:00
os_if/linux qcacmn: Add FTM build flags 2018-08-29 14:03:02 -07:00
qal qcacmn: Use appropriate dev handle in OS wrappers 2018-09-04 11:53:51 -07:00
qdf qcacmn: Add scheduler history 2018-09-05 22:15:13 -07:00
scheduler qcacmn: Add scheduler history 2018-09-05 22:15:13 -07:00
spectral qcacmn: Extend target type checks of qca8074v1 to qca8074v2 2018-08-29 03:08:00 -07:00
target_if qcacmn: Fix NULL pointer dereference in ftm 2018-09-05 22:15:05 -07:00
umac qcacmn: Add mgmt_txrx api to drain packets specific to peer 2018-09-05 22:15:10 -07:00
utils qcacmn: Add more debug_ids and reduce the dump log level 2018-09-01 01:42:42 -07:00
wlan_cfg qcacmn: Increase the WBM2SW ring size to 8191 from 4096 2018-09-05 22:15:16 -07:00
wmi qcacmn: Modify debug log levels in P2P/TDLS/SCAN 2018-09-05 16:45:45 -07:00
README.txt qcamain: Test changes 2017-09-15 21:45:35 +05:30
VERSION.txt Release 5.1.1.17I 2017-03-27 08:31:31 -07:00

README.txt 

 This is CNSS WLAN Host Driver for products starting from iHelium