linux-kernel - Re: [PATCH v1 06/29] cxl/region: Factor out code to find the root decoder

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Message-ID: <Z31c5pekQ3_1JY3G@gourry-fedora-PF4VCD3F>
Date: Tue, 7 Jan 2025 11:57:10 -0500
From: Gregory Price <gourry@...rry.net>
To: Robert Richter <rrichter@....com>
Cc: Alison Schofield <alison.schofield@...el.com>,
	Vishal Verma <vishal.l.verma@...el.com>,
	Ira Weiny <ira.weiny@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Jonathan Cameron <jonathan.cameron@...wei.com>,
	Dave Jiang <dave.jiang@...el.com>,
	Davidlohr Bueso <dave@...olabs.net>, linux-cxl@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"Fabio M. De Francesco" <fabio.m.de.francesco@...ux.intel.com>,
	Terry Bowman <terry.bowman@....com>
Subject: Re: [PATCH v1 06/29] cxl/region: Factor out code to find the root
 decoder

On Tue, Jan 07, 2025 at 03:09:52PM +0100, Robert Richter wrote:
> In function cxl_add_to_region() there is code to determine the root
> decoder associated to an endpoint decoder. Factor out that code for
> later reuse. This also simplifies the function cxl_add_to_region() as
> the change reduces its size and the number of used variables.
> 
> The reference of cxlrd_dev can be freed earlier. Since the root
> decoder exists as long as the root port exists and the endpoint
> already holds a reference to the root port, this additional reference
> is not needed. Though it looks obvious to use __free() for the
> reference of cxlrd_dev here too, this is done in a later rework. So
> just move the code.
> 
> Signed-off-by: Robert Richter <rrichter@....com>
> ---
>  drivers/cxl/core/region.c | 55 ++++++++++++++++++++++++++-------------
>  1 file changed, 37 insertions(+), 18 deletions(-)
> 

Reviewed-by: Gregory Price <gourry@...rry.net>