linux-kernel - [PATCH 4/4] cxl/mem: Disable cxl device power management

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Message-ID: <161661972722.1721612.7220170912347353657.stgit@dwillia2-desk3.amr.corp.intel.com>
Date:   Wed, 24 Mar 2021 14:02:07 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     linux-cxl@...r.kernel.org
Cc:     Ben Widawsky <ben.widawsky@...el.com>, ira.weiny@...el.com,
        vishal.l.verma@...el.com, alison.schofield@...el.com,
        linux-kernel@...r.kernel.org
Subject: [PATCH 4/4] cxl/mem: Disable cxl device power management

There is no power management of cxl virtual devices, disable
device-power-management and runtime-power-management to prevent
userspace from growing expectations of those attributes appearing. They
can be added back in the future if needed.

Reviewed-by: Ben Widawsky <ben.widawsky@...el.com>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
 drivers/cxl/mem.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c
index d615f183520c..338923a6b2ef 100644
--- a/drivers/cxl/mem.c
+++ b/drivers/cxl/mem.c
@@ -1204,6 +1204,7 @@ static int cxl_mem_add_memdev(struct cxl_mem *cxlm)
 	dev->bus = &cxl_bus_type;
 	dev->devt = MKDEV(cxl_mem_major, cxlmd->id);
 	dev->type = &cxl_memdev_type;
+	device_set_pm_not_required(dev);
 
 	cdev = &cxlmd->cdev;
 	cdev_init(cdev, &cxl_memdev_fops);