mirror_ubuntu-kernels/drivers/net/wireless/intel
Emmanuel Grumbach 39654cb3a6 iwlwifi: don't access a nonexistent register upon assert
The commit below added code to dump the content of FIFOs
that are present only on dual CPU products (8000 and up).
This broke 7265D whose firmware does advertise
IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG but doesn't have 2
CPUs. The current code does check the length of the FIFO
before dumping them (and the nonexistent FIFO has a 0
length), but we still accessed a register to set the FIFO
number and that made the DMA unhappy.

The impact was a much longer recovery upon firmware assert.

Fixes: 5b08641429 ("iwlwifi: mvm: support dumping UMAC internal txfifos")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-05-10 22:34:05 +03:00
..
ipw2x00 cfg80211: remove enum ieee80211_band 2016-04-12 15:56:15 +02:00
iwlegacy cfg80211: remove enum ieee80211_band 2016-04-12 15:56:15 +02:00
iwlwifi iwlwifi: don't access a nonexistent register upon assert 2016-05-10 22:34:05 +03:00
Kconfig
Makefile