iwlwifi: do not send sync command while holding spinlock
commit 10c994ca70e8e94bbc85a5bf13de5911ee8de4d2 "iwlwifi: fix remove key error" fixed an error reported by mac80211 during interface down. The fix involved changing an async command to synchronous. Unfortunately this was inside a spinlock section in which we cannot sleep. Modify the sending of the command back to async. This causes the mac80211 error "mac80211-phy0: failed to remove key (0, ff:ff:ff:ff:ff:ff) from hardware (-16)." to return. This error is not serious since this occurs during interface down and the keys will be cleared anyway when ucode is unloaded. Having this error message is thus less serious than a potential deadlock introduced when sleeping while holding a spinlock. We will have to find another fix for that error. This is a revert of the abovementioned commit. Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -520,7 +520,7 @@ int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
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struct iwl_host_cmd cmd = {
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struct iwl_host_cmd cmd = {
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.id = REPLY_WEPKEY,
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.id = REPLY_WEPKEY,
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.data = wep_cmd,
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.data = wep_cmd,
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.flags = CMD_SYNC,
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.flags = CMD_ASYNC,
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};
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};
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memset(wep_cmd, 0, cmd_size +
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memset(wep_cmd, 0, cmd_size +
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