linux-kernel - RE: [PATCH v5 09/26] cxl/regs: Remove early capability checks in Component Register setup

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Message-ID: <6483c1639f58_e067a294bd@dwillia2-xfh.jf.intel.com.notmuch>
Date:   Fri, 9 Jun 2023 17:18:43 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     Terry Bowman <terry.bowman@....com>, <alison.schofield@...el.com>,
        <vishal.l.verma@...el.com>, <ira.weiny@...el.com>,
        <bwidawsk@...nel.org>, <dan.j.williams@...el.com>,
        <dave.jiang@...el.com>, <Jonathan.Cameron@...wei.com>,
        <linux-cxl@...r.kernel.org>
CC:     <terry.bowman@....com>, <rrichter@....com>,
        <linux-kernel@...r.kernel.org>, <bhelgaas@...gle.com>
Subject: RE: [PATCH v5 09/26] cxl/regs: Remove early capability checks in
 Component Register setup

Terry Bowman wrote:
> From: Robert Richter <rrichter@....com>
> 
> When probing the Component Registers in function cxl_probe_regs()
> there are also checks for the existence of the HDM and RAS
> capabilities. The checks may fail for components that do not implement
> the HDM capability causing the Component Registers setup to fail too.
> 
> Remove the checks for a generalized use of cxl_probe_regs() and check
> them directly before mapping the RAS or HDM capabilities. This allows
> it to setup other Component Registers esp. of an RCH Downstream Port,
> which will be implemented in a follow-on patch.
> 
> Signed-off-by: Robert Richter <rrichter@....com>
> Signed-off-by: Terry Bowman <terry.bowman@....com>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

Looks good.