linux-kernel - Re: [PATCH linux-next] macintosh:adb:recordmcount:use !E in conditional statements

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Date:   Mon, 01 Aug 2022 16:36:06 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     cgel.zte@...il.com, linux-kernel@...r.kernel.org
Cc:     linuxppc-dev@...ts.ozlabs.org,
        ye xingchen <ye.xingchen@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: Re: [PATCH linux-next] macintosh:adb:recordmcount:use !E in
 conditional statements

cgel.zte@...il.com writes:
> From: ye xingchen <ye.xingchen@....com.cn>
>
> Use !E to replace the type of x == 0. This change is just to 
> simplify the code, no actual functional changes.
>
> Reported-by: Zeal Robot <zealci@....com.cn>
> Signed-off-by: ye xingchen <ye.xingchen@....com.cn>
> ---
>  drivers/macintosh/adb.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

The subject is wrong, why does it mention recordmcount?

But in general this is very old code which is best left alone unless
there's an actual bug, it doesn't need these sort of style refactorings
done to it IMO.

cheers

> diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c
> index 1bbb9ca08d40..368ab25db234 100644
> --- a/drivers/macintosh/adb.c
> +++ b/drivers/macintosh/adb.c
> @@ -673,7 +673,7 @@ static int adb_open(struct inode *inode, struct file *file)
>  		goto out;
>  	}
>  	state = kmalloc(sizeof(struct adbdev_state), GFP_KERNEL);
> -	if (state == 0) {
> +	if (!state) {
>  		ret = -ENOMEM;
>  		goto out;
>  	}
> -- 
> 2.25.1