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[ Upstream commit8e4ff68476] The 'ublk_chr_class' is needed when deleting ublk char devices in ublk_exit(), so move it after devices(idle) are removed. Fixes the following warning reported by Harris, James R: [ 859.178950] sysfs group 'power' not found for kobject 'ublkc0' [ 859.178962] WARNING: CPU: 3 PID: 1109 at fs/sysfs/group.c:278 sysfs_remove_group+0x9c/0xb0 Reported-by: "Harris, James R" <james.r.harris@intel.com> Fixes:71f28f3136("ublk_drv: add io_uring based userspace block driver") Link: https://lore.kernel.org/linux-block/Y9JlFmSgDl3+zy3N@T590/T/#t Signed-off-by: Ming Lei <ming.lei@redhat.com> Tested-by: Jim Harris <james.r.harris@intel.com> Link: https://lore.kernel.org/r/20230126115346.263344-1-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.