From: Chen Yu <yu.c.chen@intel.com> To: intel-wired-lan@lists.osuosl.org Cc: "Neftin, Sasha" <sasha.neftin@intel.com>, Len Brown <len.brown@intel.com>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, "Brandt, Todd E" <todd.e.brandt@intel.com>, Zhang Rui <rui.zhang@intel.com>, Tony Nguyen <anthony.l.nguyen@intel.com>, Jesse Brandeburg <jesse.brandeburg@intel.com>, linux-kernel@vger.kernel.org, Chen Yu <yu.c.chen@intel.com> Subject: [PATCH 1/4][RFC] e1000e: save the return value of e1000e_reset() Date: Wed, 11 Nov 2020 13:51:00 +0800 [thread overview] Message-ID: <7e68b2f6a9b0a6e03f6eeba8433bc532a3256830.1605073208.git.yu.c.chen@intel.com> (raw) In-Reply-To: <cover.1605073208.git.yu.c.chen@intel.com> Sometimes e1000e_reset() might fail during reume from S3 due to hardware/firmware issues. Actually the return value from e1000e_reset() can be used by the caller to verify if the NIC succeed to initialize or not. Introduce a static function _e1000e_reset() which is derived from e1000e_reset(), except that the former returns the result of this reset. No functional change expected. Signed-off-by: Chen Yu <yu.c.chen@intel.com> --- drivers/net/ethernet/intel/e1000e/netdev.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index b30f00891c03..f7c08426c0d7 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -3998,7 +3998,7 @@ static void e1000e_systim_reset(struct e1000_adapter *adapter) * set/changed during runtime. After reset the device needs to be * properly configured for Rx, Tx etc. */ -void e1000e_reset(struct e1000_adapter *adapter) +static int _e1000e_reset(struct e1000_adapter *adapter) { struct e1000_mac_info *mac = &adapter->hw.mac; struct e1000_fc_info *fc = &adapter->hw.fc; @@ -4191,14 +4191,14 @@ void e1000e_reset(struct e1000_adapter *adapter) default: dev_err(&adapter->pdev->dev, "Invalid PHY type setting EEE advertisement\n"); - return; + return -EINVAL; } ret_val = hw->phy.ops.acquire(hw); if (ret_val) { dev_err(&adapter->pdev->dev, "EEE advertisement - unable to acquire PHY\n"); - return; + return -EBUSY; } e1000_write_emi_reg_locked(hw, adv_addr, @@ -4239,6 +4239,12 @@ void e1000e_reset(struct e1000_adapter *adapter) ew32(FEXTNVM9, reg); } + return 0; +} + +void e1000e_reset(struct e1000_adapter *adapter) +{ + _e1000e_reset(adapter); } /** -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Chen Yu <yu.c.chen@intel.com> To: intel-wired-lan@osuosl.org Subject: [Intel-wired-lan] [PATCH 1/4][RFC] e1000e: save the return value of e1000e_reset() Date: Wed, 11 Nov 2020 13:51:00 +0800 [thread overview] Message-ID: <7e68b2f6a9b0a6e03f6eeba8433bc532a3256830.1605073208.git.yu.c.chen@intel.com> (raw) In-Reply-To: <cover.1605073208.git.yu.c.chen@intel.com> Sometimes e1000e_reset() might fail during reume from S3 due to hardware/firmware issues. Actually the return value from e1000e_reset() can be used by the caller to verify if the NIC succeed to initialize or not. Introduce a static function _e1000e_reset() which is derived from e1000e_reset(), except that the former returns the result of this reset. No functional change expected. Signed-off-by: Chen Yu <yu.c.chen@intel.com> --- drivers/net/ethernet/intel/e1000e/netdev.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index b30f00891c03..f7c08426c0d7 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -3998,7 +3998,7 @@ static void e1000e_systim_reset(struct e1000_adapter *adapter) * set/changed during runtime. After reset the device needs to be * properly configured for Rx, Tx etc. */ -void e1000e_reset(struct e1000_adapter *adapter) +static int _e1000e_reset(struct e1000_adapter *adapter) { struct e1000_mac_info *mac = &adapter->hw.mac; struct e1000_fc_info *fc = &adapter->hw.fc; @@ -4191,14 +4191,14 @@ void e1000e_reset(struct e1000_adapter *adapter) default: dev_err(&adapter->pdev->dev, "Invalid PHY type setting EEE advertisement\n"); - return; + return -EINVAL; } ret_val = hw->phy.ops.acquire(hw); if (ret_val) { dev_err(&adapter->pdev->dev, "EEE advertisement - unable to acquire PHY\n"); - return; + return -EBUSY; } e1000_write_emi_reg_locked(hw, adv_addr, @@ -4239,6 +4239,12 @@ void e1000e_reset(struct e1000_adapter *adapter) ew32(FEXTNVM9, reg); } + return 0; +} + +void e1000e_reset(struct e1000_adapter *adapter) +{ + _e1000e_reset(adapter); } /** -- 2.17.1
next prev parent reply other threads:[~2020-11-11 5:48 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-11 5:50 [PATCH 0/4][RFC] Disable e1000e power management if hardware error is detected Chen Yu 2020-11-11 5:50 ` [Intel-wired-lan] " Chen Yu 2020-11-11 5:51 ` Chen Yu [this message] 2020-11-11 5:51 ` [Intel-wired-lan] [PATCH 1/4][RFC] e1000e: save the return value of e1000e_reset() Chen Yu 2020-11-11 5:51 ` [PATCH 2/4][RFC] PM: sleep: export device_pm_remove() for driver use Chen Yu 2020-11-11 5:51 ` [Intel-wired-lan] " Chen Yu 2020-11-11 5:51 ` [PATCH 3/4][RFC] e1000e: Introduce workqueue to disable the power management Chen Yu 2020-11-11 5:51 ` [Intel-wired-lan] " Chen Yu 2020-11-11 5:52 ` [PATCH 4/4][RFC] e1000e: Disable the power management if hardware error detected during resume Chen Yu 2020-11-11 5:52 ` [Intel-wired-lan] " Chen Yu
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