linux-kernel - Re: [PATCH 156/190] Revert "serial: max310x: pass return value of spi_register

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Date:   Thu, 22 Apr 2021 07:28:51 +0200
From:   Jiri Slaby <jirislaby@...nel.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Cc:     Kangjie Lu <kjlu@....edu>
Subject: Re: [PATCH 156/190] Revert "serial: max310x: pass return value of
 spi_register_driver"

On 21. 04. 21, 15:00, Greg Kroah-Hartman wrote:
> This reverts commit 51f689cc11333944c7a457f25ec75fcb41e99410.
> 
> 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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
>   drivers/tty/serial/max310x.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
> index 1b61d26bb7af..93f69b66b896 100644
> --- a/drivers/tty/serial/max310x.c
> +++ b/drivers/tty/serial/max310x.c
> @@ -1518,10 +1518,10 @@ static int __init max310x_uart_init(void)
>   		return ret;
>   
>   #ifdef CONFIG_SPI_MASTER
> -	ret = spi_register_driver(&max310x_spi_driver);
> +	spi_register_driver(&max310x_spi_driver);
>   #endif
>   
> -	return ret;
> +	return 0;

ACK, uart_unregister_driver() is missing in case of error at least.

>   }
>   module_init(max310x_uart_init);
>   
> 


-- 
js
suse labs