diff mbox series

[v5,1/4] e1000e: Only run S0ix flows if shutdown succeeded

Message ID 20201214192935.895174-2-mario.limonciello@dell.com (mailing list archive)
State Awaiting Upstream
Delegated to: Netdev Maintainers
Headers show
Series Improve s0ix flows for systems i219LM | expand

Checks

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netdev/fixes_present success Link
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netdev/tree_selection success Guessed tree name to be net-next
netdev/subject_prefix warning Target tree name not specified in the subject
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success Link
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 20 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/header_inline success Link
netdev/stable success Stable not CCed

Commit Message

Limonciello, Mario Dec. 14, 2020, 7:29 p.m. UTC 
If the shutdown failed, the part will be thawed and running
S0ix flows will put it into an undefined state.

Reported-by: Alexander Duyck <alexander.duyck@gmail.com>
Reviewed-by: Alexander Duyck <alexander.duyck@gmail.com>
Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
---
 drivers/net/ethernet/intel/e1000e/netdev.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

Comments

Shen, Yijun Dec. 15, 2020, 2:46 p.m. UTC | #1 
> -----Original Message-----
> From: Limonciello, Mario <Mario_Limonciello@Dell.com>
> Sent: Tuesday, December 15, 2020 3:30 AM
> To: Jeff Kirsher; Tony Nguyen; intel-wired-lan@lists.osuosl.org
> Cc: linux-kernel@vger.kernel.org; Netdev; Alexander Duyck; Jakub Kicinski;
> Sasha Netfin; Aaron Brown; Stefan Assmann; David Miller;
> darcari@redhat.com; Shen, Yijun; Yuan, Perry;
> anthony.wong@canonical.com; Hans de Goede; Limonciello, Mario
> Subject: [PATCH v5 1/4] e1000e: Only run S0ix flows if shutdown succeeded
> 
> If the shutdown failed, the part will be thawed and running S0ix flows will
> put it into an undefined state.
> 
> Reported-by: Alexander Duyck <alexander.duyck@gmail.com>
> Reviewed-by: Alexander Duyck <alexander.duyck@gmail.com>
> Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>

Verified this series patch on Dell Systems.

Tested-By: Yijun Shen <Yijun.shen@dell.com>

> ---
>  drivers/net/ethernet/intel/e1000e/netdev.c | 13 +++++++------
>  1 file changed, 7 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c
> b/drivers/net/ethernet/intel/e1000e/netdev.c
> index 128ab6898070..6588f5d4a2be 100644
> --- a/drivers/net/ethernet/intel/e1000e/netdev.c
> +++ b/drivers/net/ethernet/intel/e1000e/netdev.c
> @@ -6970,13 +6970,14 @@ static __maybe_unused int
> e1000e_pm_suspend(struct device *dev)
>  	e1000e_pm_freeze(dev);
> 
>  	rc = __e1000_shutdown(pdev, false);
> -	if (rc)
> +	if (rc) {
>  		e1000e_pm_thaw(dev);
> -
> -	/* Introduce S0ix implementation */
> -	if (hw->mac.type >= e1000_pch_cnp &&
> -	    !e1000e_check_me(hw->adapter->pdev->device))
> -		e1000e_s0ix_entry_flow(adapter);
> +	} else {
> +		/* Introduce S0ix implementation */
> +		if (hw->mac.type >= e1000_pch_cnp &&
> +		    !e1000e_check_me(hw->adapter->pdev->device))
> +			e1000e_s0ix_entry_flow(adapter);
> +	}
> 
>  	return rc;
>  }
> --
> 2.25.1
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 128ab6898070..6588f5d4a2be 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -6970,13 +6970,14 @@  static __maybe_unused int e1000e_pm_suspend(struct device *dev)
 	e1000e_pm_freeze(dev);
 
 	rc = __e1000_shutdown(pdev, false);
-	if (rc)
+	if (rc) {
 		e1000e_pm_thaw(dev);
-
-	/* Introduce S0ix implementation */
-	if (hw->mac.type >= e1000_pch_cnp &&
-	    !e1000e_check_me(hw->adapter->pdev->device))
-		e1000e_s0ix_entry_flow(adapter);
+	} else {
+		/* Introduce S0ix implementation */
+		if (hw->mac.type >= e1000_pch_cnp &&
+		    !e1000e_check_me(hw->adapter->pdev->device))
+			e1000e_s0ix_entry_flow(adapter);
+	}
 
 	return rc;
 }