linux-kernel - Re: [PATCH 168/190] Revert "net: marvell: fix a missing check of acpi_match

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Message-ID: <20210428105004.GA21092@shell.armlinux.org.uk>
Date:   Wed, 28 Apr 2021 11:50:09 +0100
From:   Russell King - ARM Linux admin <linux@...linux.org.uk>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, Kangjie Lu <kjlu@....edu>,
        "David S . Miller" <davem@...emloft.net>
Subject: Re: [PATCH 168/190] Revert "net: marvell: fix a missing check of
 acpi_match_device"

On Tue, Apr 27, 2021 at 04:52:14PM +0200, Greg Kroah-Hartman wrote:
> On Wed, Apr 21, 2021 at 03:00:43PM +0200, Greg Kroah-Hartman wrote:
> > This reverts commit 92ee77d148bf06d8c52664be4d1b862583fd5c0e.
> > 
> > Commits from @umn.edu addresses have been found to be submitted in "bad
> > faith" to try to test the kernel community's ability to review "known
> > malicious" changes.  The result of these submissions can be found in a
> > paper published at the 42nd IEEE Symposium on Security and Privacy
> > entitled, "Open Source Insecurity: Stealthily Introducing
> > Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University
> > of Minnesota) and Kangjie Lu (University of Minnesota).
> > 
> > Because of this, all submissions from this group must be reverted from
> > the kernel tree and will need to be re-reviewed again to determine if
> > they actually are a valid fix.  Until that work is complete, remove this
> > change to ensure that no problems are being introduced into the
> > codebase.
> > 
> > Cc: Kangjie Lu <kjlu@....edu>
> > Cc: David S. Miller <davem@...emloft.net>
> > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > ---
> >  drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 --
> >  1 file changed, 2 deletions(-)
> > 
> > diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> > index 1767c60056c5..f1a70b37227f 100644
> > --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> > +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> > @@ -7328,8 +7328,6 @@ static int mvpp2_probe(struct platform_device *pdev)
> >  	if (has_acpi_companion(&pdev->dev)) {
> >  		acpi_id = acpi_match_device(pdev->dev.driver->acpi_match_table,
> >  					    &pdev->dev);
> > -		if (!acpi_id)
> > -			return -EINVAL;
> >  		priv->hw_version = (unsigned long)acpi_id->driver_data;
> >  	} else {
> >  		priv->hw_version =
> > -- 
> > 2.31.1
> > 
> 
> The original commit here looks correct, so I'll drop this revert.

Agreed, the original patch looks fine to me and the revert is
unnecessary.

-- 
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