[PATCH/RFT v2 0/4] ath10k: fixes

Michal Kazior michal.kazior at tieto.com
Fri Oct 4 01:43:41 EDT 2013


This patchset addresses recently spotted issue
with (yet another) scheduling while atomic bug
(the other being WEP key index setting). This one
is related to hw_config() and powersave settings.
This comes from recent changes I've done to
HTC/WMI. WMI commands can block now so it's
illegal to call them in an atomic context anymore.

ath10k needs to setup some settings per-vdev (i.e.
per-interface) such as powersave, rts, fragmentation.
Until now mac80211 iteration functions were used.
However using non-atomic iteration function variant
doesn't solve the problem as it introduces an
issue with iflist_mtx deadlock in some cases.

I briefly tried to reproduce the issue Kalle
reported but was unsuccessful thus the "/RFT".

 * fix kbuild test robot warning
   (uninitialized `ret`)
 * add patch #4 that removes code that becomes
   unnecessary after patch #3

Michal Kazior (4):
  ath10k: fix add_interface failure handling
  ath10k: track vif list internally
  ath10k: fix scheduling while atomic config bug
  ath10k: remove unnecessary checks

 drivers/net/wireless/ath/ath10k/core.c |    2 +
 drivers/net/wireless/ath/ath10k/core.h |    3 +
 drivers/net/wireless/ath/ath10k/mac.c  |  200 +++++++++++++++-----------------
 3 files changed, 97 insertions(+), 108 deletions(-)


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