Emmanuel Grumbach 23e76d1a51 iwlwifi: pcie: don't panic on host commands in iwldvm ... None of the devices supported by iwldvm have support for shadow registers. This means that we wake the NIC when we increment the write pointer on Tx ring. This happened even before my bad commit mentionned below. Since my commit below, we wake up the NIC when we put a host command on the ring regardless of shadow register support. This means that in iwldvm (when the NIC doesn't support shadow register), we wake up the NIC twice: pcie_enqueue_hcmd: wake up the NIC iwl_pcie_txq_inc_wr_ptr: wake up the NIC - no shadow reg support Since waking up the NIC means that we need to acquire a spinlock, this obviously leads to a recursive spinlock and hence a freeze. Fixes: b943949105 ("iwlwifi: pcie: keep the NIC awake when commands are in flight") Reported-by: Janusz Dziedzic <janusz.dziedzic@gmail.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>		2014-01-20 12:32:06 +02:00
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drv.c	iwlwifi: Update Copyright to 2014	2013-12-31 19:03:53 +02:00
internal.h	iwlwifi: Update Copyright to 2014	2013-12-31 19:03:53 +02:00
rx.c	iwlwifi: add inline helper for packet lengths	2014-01-13 22:17:20 +02:00
trans.c	iwlwifi: pcie: enable oscillator for L1 exit	2014-01-13 22:17:05 +02:00
tx.c	iwlwifi: pcie: don't panic on host commands in iwldvm	2014-01-20 12:32:06 +02:00