linux-kernel - Re: [PATCH v2 07/36] coresight: replicator: Cleanup device tracking

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]

Date:   Wed, 17 Apr 2019 14:34:18 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Suzuki K Poulose <suzuki.poulose@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        coresight@...ts.linaro.org, mike.leach@...aro.org,
        rjw@...ysocki.net, robert.walker@....com
Subject: Re: [PATCH v2 07/36] coresight: replicator: Cleanup device tracking

On Mon, Apr 15, 2019 at 05:03:50PM +0100, Suzuki K Poulose wrote:
> In preparation to use a consistent device naming scheme,
> clean up the device link tracking in replicator driver.
> Use the "coresight" device instead of the "real" parent device
> for all internal purposes. All other requests (e.g, power management,
> DMA operations) must use the "real" device which is the parent device.
> 
> Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
> ---
>  drivers/hwtracing/coresight/coresight-replicator.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c
> index 4e0da85..8bbb008 100644
> --- a/drivers/hwtracing/coresight/coresight-replicator.c
> +++ b/drivers/hwtracing/coresight/coresight-replicator.c
> @@ -26,13 +26,11 @@
>   * struct replicator_drvdata - specifics associated to a replicator component
>   * @base:	memory mapped base address for this component. Also indicates
>   *		whether this one is programmable or not.
> - * @dev:	the device entity associated with this component
>   * @atclk:	optional clock for the core parts of the replicator.
>   * @csdev:	component vitals needed by the framework
>   */
>  struct replicator_drvdata {
>  	void __iomem		*base;
> -	struct device		*dev;
>  	struct clk		*atclk;
>  	struct coresight_device	*csdev;
>  };
> @@ -100,7 +98,7 @@ static int replicator_enable(struct coresight_device *csdev, int inport,
>  	if (drvdata->base)
>  		rc = dynamic_replicator_enable(drvdata, inport, outport);
>  	if (!rc)
> -		dev_dbg(drvdata->dev, "REPLICATOR enabled\n");
> +		dev_dbg(&csdev->dev, "REPLICATOR enabled\n");
>  	return rc;
>  }
>  
> @@ -139,7 +137,7 @@ static void replicator_disable(struct coresight_device *csdev, int inport,
>  
>  	if (drvdata->base)
>  		dynamic_replicator_disable(drvdata, inport, outport);
> -	dev_dbg(drvdata->dev, "REPLICATOR disabled\n");
> +	dev_dbg(&csdev->dev, "REPLICATOR disabled\n");
>  }
>  
>  static const struct coresight_ops_link replicator_link_ops = {
> @@ -193,7 +191,6 @@ static int replicator_probe(struct device *dev, struct resource *res)
>  	if (!drvdata)
>  		return -ENOMEM;
>  
> -	drvdata->dev = dev;
>  	drvdata->atclk = devm_clk_get(dev, "atclk"); /* optional */
>  	if (!IS_ERR(drvdata->atclk)) {
>  		ret = clk_prepare_enable(drvdata->atclk);

Reviewed-by: Mathieu Poirier <mathieu.poirier@...aro.org>

> -- 
> 2.7.4
>