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Commit cf88c433 authored by Tomas Winkler's avatar Tomas Winkler Committed by John W. Linville
Browse files

iwlwifi: workaround interrupt handling no some platforms 



This patch adds workaround for an interrupt related hardware bug on
some platforms.  (Apparently these platforms boot-up w/ INTX_DISABLED
set. -- JWL)

Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarZhu Yi <yi.zhu@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 49898852

drivers/net/wireless/iwlwifi/iwl-agn.c

+8 −0
Original line number Diff line number Diff line
@@ -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) {