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From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
To: Zijun Hu <zijun_hu@icloud.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Tejun Heo <tj@kernel.org>, Josef Bacik <josef@toxicpanda.com>,
	Jens Axboe <axboe@kernel.dk>, Boris Burkov <boris@bur.io>,
	Davidlohr Bueso <dave@stgolabs.net>,
	Dave Jiang <dave.jiang@intel.com>,
	Alison Schofield <alison.schofield@intel.com>,
	Vishal Verma <vishal.l.verma@intel.com>,
	Ira Weiny <ira.weiny@intel.com>,
	Dan Williams <dan.j.williams@intel.com>,
	<linux-kernel@vger.kernel.org>, <cgroups@vger.kernel.org>,
	<linux-block@vger.kernel.org>, <linux-cxl@vger.kernel.org>,
	Zijun Hu <quic_zijuhu@quicinc.com>
Subject: Re: [PATCH v3 4/9] driver core: Move true expression out of if condition in API driver_find_device()
Date: Mon, 16 Dec 2024 15:18:45 +0000	[thread overview]
Message-ID: <20241216151845.000074b1@huawei.com> (raw)
In-Reply-To: <20241212-class_fix-v3-4-04e20c4f0971@quicinc.com>

On Thu, 12 Dec 2024 21:38:40 +0800
Zijun Hu <zijun_hu@icloud.com> wrote:

> From: Zijun Hu <quic_zijuhu@quicinc.com>
> 
> For driver_find_device(), get_device() in the if condition always returns
> true, move it to if body to make the API's logic more clearer.
> 
> Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Though I think it would have been fine to have all these similar patches
as a single patch.

> ---
>  drivers/base/driver.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/base/driver.c b/drivers/base/driver.c
> index b4eb5b89c4ee7bc35458fc75730b16a6d1e804d3..6f033a741aa7ce6138d1c61e49e72b2a3eb85e06 100644
> --- a/drivers/base/driver.c
> +++ b/drivers/base/driver.c
> @@ -160,9 +160,12 @@ struct device *driver_find_device(const struct device_driver *drv,
>  
>  	klist_iter_init_node(&drv->p->klist_devices, &i,
>  			     (start ? &start->p->knode_driver : NULL));
> -	while ((dev = next_device(&i)))
> -		if (match(dev, data) && get_device(dev))
> +	while ((dev = next_device(&i))) {
> +		if (match(dev, data)) {
> +			get_device(dev);
>  			break;
> +		}
> +	}
>  	klist_iter_exit(&i);
>  	return dev;
>  }
> 


  reply	other threads:[~2024-12-16 15:18 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-12-12 13:38 [PATCH v3 0/9] driver core: class: Fix bug and code improvements for class APIs Zijun Hu
2024-12-12 13:38 ` [PATCH v3 1/9] driver core: class: Fix wild pointer dereferences in API class_dev_iter_next() Zijun Hu
2024-12-16 15:36   ` Jonathan Cameron
2024-12-17 14:09     ` Zijun Hu
2024-12-12 13:38 ` [PATCH v3 2/9] blk-cgroup: Fix class @block_class's subsystem refcount leakage Zijun Hu
2024-12-17 10:53   ` Michal Koutný
2024-12-12 13:38 ` [PATCH v3 3/9] driver core: bus: Move true expression out of if condition in API bus_find_device() Zijun Hu
2024-12-16 15:14   ` Jonathan Cameron
2024-12-12 13:38 ` [PATCH v3 4/9] driver core: Move true expression out of if condition in API driver_find_device() Zijun Hu
2024-12-16 15:18   ` Jonathan Cameron [this message]
2024-12-16 18:01   ` Fan Ni
2024-12-17 14:13     ` Zijun Hu
2024-12-12 13:38 ` [PATCH v3 5/9] driver core: Move true expression out of if condition in API device_find_child() Zijun Hu
2024-12-16 15:19   ` Jonathan Cameron
2024-12-16 18:02   ` Fan Ni
2024-12-12 13:38 ` [PATCH v3 6/9] driver core: Rename declaration parameter name for API device_find_child() cluster Zijun Hu
2024-12-16 15:21   ` Jonathan Cameron
2024-12-16 18:02   ` Fan Ni
2024-12-12 13:38 ` [PATCH v3 7/9] driver core: Correct parameter check for API device_for_each_child_reverse_from() Zijun Hu
2024-12-16 15:23   ` Jonathan Cameron
2024-12-17 14:18     ` Zijun Hu
2024-12-12 13:38 ` [PATCH v3 8/9] driver core: Correct API device_for_each_child_reverse_from() prototype Zijun Hu
2024-12-16 15:30   ` Jonathan Cameron
2024-12-12 13:38 ` [PATCH v3 9/9] driver core: Introduce device_iter_t for device iterating APIs Zijun Hu
2024-12-16 15:33   ` Jonathan Cameron

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