linux-kernel - [PATCH v3 0/4] cxl/mem: Fix memdev device setup

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Message-ID: <161714738634.2168142.10860201861152789544.stgit@dwillia2-desk3.amr.corp.intel.com>
Date:   Tue, 30 Mar 2021 16:36:26 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     linux-cxl@...r.kernel.org
Cc:     Ben Widawsky <ben.widawsky@...el.com>,
        Jason Gunthorpe <jgg@...dia.com>, linux-kernel@...r.kernel.org,
        vishal.l.verma@...el.com, ira.weiny@...el.com,
        alison.schofield@...el.com
Subject: [PATCH v3 0/4]  cxl/mem: Fix memdev device setup

Changes since v2: [1]
- switch from non-idiomatic srcu synchronization of the device
  registration state to rwsem protection of the cxlmd->cxlm pointer.
  (Jason)

[1]: http://lore.kernel.org/r/161707245893.2072157.6743322596719518693.stgit@dwillia2-desk3.amr.corp.intel.com

---

A collection of fixes initially inspired by Jason's recognition of
dev_set_name() error handling mistakes on other driver review, but also
from a deeper discussion of idiomatic device operation shutdown flows.
The end result is easier to reason about and validate. Thank you, Jason.

The sysfs_emit() fixup and unpublishing of device power management files
are independent sanity cleanups.

---

Dan Williams (4):
      cxl/mem: Use sysfs_emit() for attribute show routines
      cxl/mem: Fix synchronization mechanism for device removal vs ioctl operations
      cxl/mem: Do not rely on device_add() side effects for dev_set_name() failures
      cxl/mem: Disable cxl device power management


 drivers/cxl/mem.c |  141 +++++++++++++++++++++++++++++++----------------------
 1 file changed, 83 insertions(+), 58 deletions(-)

base-commit: a38fd8748464831584a19438cbb3082b5a2dab15