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From: Dan Williams <dan.j.williams@intel.com>
To: linux-cxl@vger.kernel.org
Cc: Ben Widawsky <ben.widawsky@intel.com>,
	linux-kernel@vger.kernel.org, vishal.l.verma@intel.com,
	ira.weiny@intel.com, alison.schofield@intel.com
Subject: [PATCH v3 4/4] cxl/mem: Disable cxl device power management
Date: Tue, 30 Mar 2021 16:36:48 -0700	[thread overview]
Message-ID: <161714740843.2168142.6570516949724974678.stgit@dwillia2-desk3.amr.corp.intel.com> (raw)
In-Reply-To: <161714738634.2168142.10860201861152789544.stgit@dwillia2-desk3.amr.corp.intel.com>

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

diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c
index 759713b619ab..a8f750a9e2e4 100644
--- a/drivers/cxl/mem.c
+++ b/drivers/cxl/mem.c
@@ -1210,6 +1210,7 @@ static struct cxl_memdev *cxl_memdev_alloc(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);


      parent reply	other threads:[~2021-03-30 23:37 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-30 23:36 [PATCH v3 0/4] cxl/mem: Fix memdev device setup Dan Williams
2021-03-30 23:36 ` [PATCH v3 1/4] cxl/mem: Use sysfs_emit() for attribute show routines Dan Williams
2021-03-30 23:36 ` [PATCH v3 2/4] cxl/mem: Fix synchronization mechanism for device removal vs ioctl operations Dan Williams
2021-03-31 13:07   ` Jason Gunthorpe
2021-03-31 15:45     ` Dan Williams
2021-03-30 23:36 ` [PATCH v3 3/4] cxl/mem: Do not rely on device_add() side effects for dev_set_name() failures Dan Williams
2021-03-31 13:09   ` Jason Gunthorpe
2021-03-31 16:04     ` Dan Williams
2021-03-31 16:17       ` Jason Gunthorpe
2021-03-31 16:32         ` Dan Williams
2021-03-30 23:36 ` Dan Williams [this message]

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