From cd398c313785cb5f2b8cb2c85e865f06419b1730 Mon Sep 17 00:00:00 2001 From: Abhijeet Kolekar <abhijeet.kolekar@intel.com> Date: Wed, 14 Apr 2010 10:27:00 -0700 Subject: [PATCH] iwlwifi: reset pci retry timeout We removed resetting of PCI_RETRY_TIMEOUT register in merge of suspend resume work. 'Suspend and resume' resets the PCI configuration space, so we have to disable the RETRY_TIMEOUT register again here. Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> --- drivers/net/wireless/iwlwifi/iwl-core.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index 1cbc22a180a78..1e11706dcf636 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -2930,6 +2930,12 @@ int iwl_pci_resume(struct pci_dev *pdev) struct iwl_priv *priv = pci_get_drvdata(pdev); int ret; + /* + * We disable the RETRY_TIMEOUT register (0x41) to keep + * PCI Tx retries from interfering with C3 CPU state. + */ + pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); + pci_set_power_state(pdev, PCI_D0); ret = pci_enable_device(pdev); if (ret) -- 2.30.2