linux-kernel - Re: [PATCH] fpga: remove redundant checks for bridge ops

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Zbi+yJC7KNvl9med@yilunxu-OptiPlex-7050>
Date: Tue, 30 Jan 2024 17:18:00 +0800
From: Xu Yilun <yilun.xu@...ux.intel.com>
To: Marco Pagani <marpagan@...hat.com>
Cc: Moritz Fischer <mdf@...nel.org>, Wu Hao <hao.wu@...el.com>,
	Xu Yilun <yilun.xu@...el.com>, Tom Rix <trix@...hat.com>,
	linux-fpga@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fpga: remove redundant checks for bridge ops

On Wed, Jan 24, 2024 at 04:24:07PM +0100, Marco Pagani wrote:
> Commit 0d70af3c2530 ("fpga: bridge: Use standard dev_release for class
> driver") introduced a check in fpga_bridge_register() that prevents
> registering a bridge without ops, making checking on every call
> redundant.
> 
> Signed-off-by: Marco Pagani <marpagan@...hat.com>
> ---
>  drivers/fpga/fpga-bridge.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/fpga/fpga-bridge.c b/drivers/fpga/fpga-bridge.c
> index a024be2b84e2..e0a5ef318f5e 100644
> --- a/drivers/fpga/fpga-bridge.c
> +++ b/drivers/fpga/fpga-bridge.c
> @@ -30,7 +30,7 @@ int fpga_bridge_enable(struct fpga_bridge *bridge)
>  {
>  	dev_dbg(&bridge->dev, "enable\n");
>  
> -	if (bridge->br_ops && bridge->br_ops->enable_set)
> +	if (bridge->br_ops->enable_set)
>  		return bridge->br_ops->enable_set(bridge, 1);
>  
>  	return 0;
> @@ -48,7 +48,7 @@ int fpga_bridge_disable(struct fpga_bridge *bridge)
>  {
>  	dev_dbg(&bridge->dev, "disable\n");
>  
> -	if (bridge->br_ops && bridge->br_ops->enable_set)
> +	if (bridge->br_ops->enable_set)
>  		return bridge->br_ops->enable_set(bridge, 0);
>  
>  	return 0;
> @@ -401,7 +401,7 @@ void fpga_bridge_unregister(struct fpga_bridge *bridge)
>  	 * If the low level driver provides a method for putting bridge into
>  	 * a desired state upon unregister, do it.
>  	 */
> -	if (bridge->br_ops && bridge->br_ops->fpga_bridge_remove)
> +	if (bridge->br_ops->fpga_bridge_remove)
>  		bridge->br_ops->fpga_bridge_remove(bridge);

Also for state_show()?

Thanks,
Yilun

>  
>  	device_unregister(&bridge->dev);
> 
> base-commit: c849ecb2ae8413f86c84627cb0af06dffce4e215
> -- 
> 2.43.0
> 
>