linux-kernel - Re: [PATCH 148/190] Revert "media: mt312: fix a missing check of mt312 reset"

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Message-ID: <YIgQ1Y6uEuIUK27d@kroah.com>
Date:   Tue, 27 Apr 2021 15:25:41 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Kangjie Lu <kjlu@....edu>, Matthias Schwarzott <zzam@...too.org>,
        Sean Young <sean@...s.org>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
Subject: Re: [PATCH 148/190] Revert "media: mt312: fix a missing check of
 mt312 reset"

On Wed, Apr 21, 2021 at 03:00:23PM +0200, Greg Kroah-Hartman wrote:
> This reverts commit 9502cdf0807058a10029488052b064cecceb7fc9.
> 
> 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: Matthias Schwarzott <zzam@...too.org>
> Cc: Sean Young <sean@...s.org>
> Cc: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
>  drivers/media/dvb-frontends/mt312.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/media/dvb-frontends/mt312.c b/drivers/media/dvb-frontends/mt312.c
> index d43a67045dbe..1dc6adefb8fe 100644
> --- a/drivers/media/dvb-frontends/mt312.c
> +++ b/drivers/media/dvb-frontends/mt312.c
> @@ -627,9 +627,7 @@ static int mt312_set_frontend(struct dvb_frontend *fe)
>  	if (ret < 0)
>  		return ret;
>  
> -	ret = mt312_reset(state, 0);
> -	if (ret < 0)
> -		return ret;
> +	mt312_reset(state, 0);
>  
>  	return 0;
>  }
> -- 
> 2.31.1
> 

This could have been made much simpler:
	return mt312_reset(state, 0);
but as-is, is fine, I'll drop this revert.

greg k-h