From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mga01.intel.com ([192.55.52.88]:22419 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755244AbYICDbc (ORCPT ); Tue, 2 Sep 2008 23:31:32 -0400 From: Zhu Yi To: linville@tuxdriver.com Cc: linux-wireless@vger.kernel.org, Tomas Winkler , Zhu Yi Subject: [PATCH 28/39] iwlwifi: workaround interrupt handling no some platforms Date: Wed, 3 Sep 2008 11:26:48 +0800 Message-Id: <1220412419-15404-29-git-send-email-yi.zhu@intel.com> (sfid-20080903_055044_580970_0FDFAD15) In-Reply-To: <1220412419-15404-28-git-send-email-yi.zhu@intel.com> References: <1220412419-15404-1-git-send-email-yi.zhu@intel.com> <1220412419-15404-2-git-send-email-yi.zhu@intel.com> <1220412419-15404-3-git-send-email-yi.zhu@intel.com> <1220412419-15404-4-git-send-email-yi.zhu@intel.com> <1220412419-15404-5-git-send-email-yi.zhu@intel.com> <1220412419-15404-6-git-send-email-yi.zhu@intel.com> <1220412419-15404-7-git-send-email-yi.zhu@intel.com> <1220412419-15404-8-git-send-email-yi.zhu@intel.com> <1220412419-15404-9-git-send-email-yi.zhu@intel.com> <1220412419-15404-10-git-send-email-yi.zhu@intel.com> <1220412419-15404-11-git-send-email-yi.zhu@intel.com> <1220412419-15404-12-git-send-email-yi.zhu@intel.com> <1220412419-15404-13-git-send-email-yi.zhu@intel.com> <1220412419-15404-14-git-send-email-yi.zhu@intel.com> <1220412419-15404-15-git-send-email-yi.zhu@intel.com> <1220412419-15404-16-git-send-email-yi.zhu@intel.com> <1220412419-15404-17-git-send-email-yi.zhu@intel.com> <1220412419-15404-18-git-send-email-yi.zhu@intel.com> <1220412419-15404-19-git-send-email-yi.zhu@intel.com> <1220412419-15404-20-git-send-email-yi.zhu@intel.com> <1220412419-15404-21-git-send-email-yi.zhu@intel.com> <1220412419-15404-22-git-send-email-yi.zhu@intel.com> <1220412419-15404-23-git-send-email-yi.zhu@intel.com> <1220412419-15404-24-git-send-email-yi.zhu@intel.com> <1220412419-15404-25-git-send-email-yi.zhu@intel.com> <1220412419-15404-26-git-send-email-yi.zhu@intel.com> <1220412419-15404-27-git-send-email-yi.zhu@intel.com> <1220412419-15404-28-git-send-email-yi.zhu@intel.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Tomas Winkler This patch adds workaround for an interrupt related hardware bug on some platforms. Signed-off-by: Tomas Winkler Signed-off-by: Zhu Yi --- drivers/net/wireless/iwlwifi/iwl-agn.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index aad0ddc..10980c7 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -2602,6 +2602,7 @@ static int iwl4965_mac_start(struct ieee80211_hw *hw) { struct iwl_priv *priv = hw->priv; int ret; + u16 pci_cmd; IWL_DEBUG_MAC80211("enter\n"); @@ -2612,6 +2613,13 @@ static int iwl4965_mac_start(struct ieee80211_hw *hw) pci_restore_state(priv->pci_dev); pci_enable_msi(priv->pci_dev); + /* enable interrupts if needed: hw bug w/a */ + pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd); + if (pci_cmd & PCI_COMMAND_INTX_DISABLE) { + pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; + pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd); + } + ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED, DRV_NAME, priv); if (ret) { -- 1.5.3.6