mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-06 08:46:46 +00:00
Code Issues Releases Wiki Activity

iwlwifi: dvm: don't send HCMD in restart flow

Browse source 
There is a race between the restart flow and the workers.
The workers are cancelled after the fw is already killed
and might send HCMD when there is fw to handle them.
Simply check that there is a fw to which the HCMD can be
sent before actually sending it.

Cc: stable@vger.kernel.org
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Emmanuel Grumbach 2013-01-31 15:03:55 +02:00 committed by Johannes Berg
parent 4620020b5d
commit 2d5d50ee59
2 changed files with 11 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
drivers/net/wireless/iwlwifi/dvm/lib.c
View file

@ -1261,6 +1261,15 @@ int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
return -EIO;
}
/*
* This can happen upon FW ASSERT: we clear the STATUS_FW_ERROR flag
* in iwl_down but cancel the workers only later.
*/
if (!priv->ucode_loaded) {
IWL_ERR(priv, "Fw not loaded - dropping CMD: %x\n", cmd->id);
return -EIO;
}
/*
* Synchronous commands from this op-mode must hold
* the mutex, this ensures we don't try to send two

4
drivers/net/wireless/iwlwifi/dvm/ucode.c
View file

@ -367,6 +367,8 @@ int iwl_load_ucode_wait_alive(struct iwl_priv *priv,
return -EIO;
}
priv->ucode_loaded = true;
if (ucode_type != IWL_UCODE_WOWLAN) {
/* delay a bit to give rfkill time to run */
msleep(5);
@ -380,8 +382,6 @@ int iwl_load_ucode_wait_alive(struct iwl_priv *priv,
return ret;
}
priv->ucode_loaded = true;
return 0;
}