[PATCH v4 0/4] cxl/mem: Fix memdev device setup

From: Dan Williams
Date: Thu Apr 01 2021 - 14:13:03 EST


Changes since v3 [1]:

- Drop cxl_memdev_activate(). An open-coded pointer assignment is
sufficient relative to cdev_device_add() publishing the device (Jason)

[1]: http://lore.kernel.org/r/161714738634.2168142.10860201861152789544.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

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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.

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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, 82 insertions(+), 59 deletions(-)

base-commit: a38fd8748464831584a19438cbb3082b5a2dab15