| Date | Wed, 28 Sep 2011 15:01:58 -0700 | From | Greg KH <> | Subject | [154/244] iwlagn: workaround bug crashing some APs |
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3.0-stable review patch. If anyone has any objections, please let us know.
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From: Don Fry <donald.h.fry@intel.com>
commit 2249b011432ca3dcce112f0f71e0f531b4bb9347 upstream.
This patch reverts commit 9b7688328422b88a7a15dc0dc123ad9ab1a6e22d which was introduced in 2.6.38-rc1. It works around a problem where the iwlagn driver stimulates a bug crashing (requiring power cycle to recover) some APs under heavy traffic.
Signed-off-by: Don Fry <donald.h.fry@intel.com> SIgned-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/net/wireless/iwlwifi/iwl-agn.c | 5 +++++ 1 file changed, 5 insertions(+)
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -2440,7 +2440,12 @@ static int iwl_mac_setup_register(struct IEEE80211_HW_SPECTRUM_MGMT | IEEE80211_HW_REPORTS_TX_ACK_STATUS; + /* + * Including the following line will crash some AP's. This + * workaround removes the stimulus which causes the crash until + * the AP software can be fixed. hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF; + */ hw->flags |= IEEE80211_HW_SUPPORTS_PS | IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
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