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From: Daniel Scally <djrscally@gmail.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org,
	rafael@kernel.org, laurent.pinchart@ideasonboard.com
Subject: Re: [PATCH 1/2] device property: Check fwnode->secondary in fwnode_graph_get_next_endpoint()
Date: Fri, 23 Jul 2021 14:04:59 +0100	[thread overview]
Message-ID: <acf4838d-3c70-20c1-5fce-ee36765b06c4@gmail.com> (raw)
In-Reply-To: <YPq28BNOmqZPdRqq@smile.fi.intel.com>


On 23/07/2021 13:32, Andy Shevchenko wrote:
> On Thu, Jul 22, 2021 at 09:19:28PM +0100, Daniel Scally wrote:
>> Sensor drivers often check for an endpoint to make sure that they're
>> connected to a consuming device like a CIO2 during .probe(). Some of
>> those endpoints might be in the form of software_nodes assigned as
>> a secondary to the device's fwnode_handle. Account for this possibility
>> in fwnode_graph_get_next_endpoint() to avoid having to do it in the
>> sensor drivers themselves.
> ...
>
>> +	ep = fwnode_call_ptr_op(parent, graph_get_next_endpoint, prev);
>> +
>> +	if (IS_ERR_OR_NULL(ep) && !IS_ERR_OR_NULL(parent) &&
>> +	    !IS_ERR_OR_NULL(parent->secondary))
> Nit-pick, I would put it like:
>
> 	if (!IS_ERR_OR_NULL(parent->secondary) && !IS_ERR_OR_NULL(parent) &&
> 	    IS_ERR_OR_NULL(ep))
>
> or
>
> 	if (IS_ERR_OR_NULL(ep) &&
> 	    !IS_ERR_OR_NULL(parent->secondary) && !IS_ERR_OR_NULL(parent))
>
> for the sake of logical split.


OK; I'll do the second one, feel like it's better to have ep as the
first check.

>
>> +		ep = fwnode_graph_get_next_endpoint(parent->secondary, NULL);

  reply	other threads:[~2021-07-23 13:05 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-22 20:19 [PATCH 0/2] Check for endpoints in fwnode->secondary more sensibly Daniel Scally
2021-07-22 20:19 ` [PATCH 1/2] device property: Check fwnode->secondary in fwnode_graph_get_next_endpoint() Daniel Scally
2021-07-23 12:32   ` Andy Shevchenko
2021-07-23 13:04     ` Daniel Scally [this message]
2021-07-30 11:34       ` Andy Shevchenko
2021-07-31 21:36         ` Daniel Scally
2021-07-22 20:19 ` [PATCH 2/2] Revert "media: device property: Call fwnode_graph_get_endpoint_by_id() for fwnode->secondary" Daniel Scally
2021-07-23 12:33 ` [PATCH 0/2] Check for endpoints in fwnode->secondary more sensibly Andy Shevchenko

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