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Dave Jiang 285b57595d dmaengine: move channel device_node deletion to driver commit `e594443196` upstream. Channel device_node deletion is managed by the device driver rather than the dmaengine core. The deletion was accidentally introduced when making channel unregister dynamic. It causes xilinx_dma module to crash on unload as reported by Radhey. Remove chan->device_node delete in dmaengine and also fix up idxd driver. [ 42.142705] Internal error: Oops: 96000044 [#1] SMP [ 42.147566] Modules linked in: xilinx_dma(-) clk_xlnx_clock_wizard uio_pdrv_genirq [ 42.155139] CPU: 1 PID: 2075 Comm: rmmod Not tainted 5.10.1-00026-g3a2e6dd7a05-dirty #192 [ 42.163302] Hardware name: Enclustra XU5 SOM (DT) [ 42.167992] pstate: 40000005 (nZcv daif -PAN -UAO -TCO BTYPE=--) [ 42.173996] pc : xilinx_dma_chan_remove+0x74/0xa0 [xilinx_dma] [ 42.179815] lr : xilinx_dma_chan_remove+0x70/0xa0 [xilinx_dma] [ 42.185636] sp : ffffffc01112bca0 [ 42.188935] x29: ffffffc01112bca0 x28: ffffff80402ea640 xilinx_dma_chan_remove+0x74/0xa0: __list_del at ./include/linux/list.h:112 (inlined by) __list_del_entry at./include/linux/list.h:135 (inlined by) list_del at ./include/linux/list.h:146 (inlined by) xilinx_dma_chan_remove at drivers/dma/xilinx/xilinx_dma.c:2546 Fixes: `e81274cd6b` ("dmaengine: add support to dynamic register/unregister of channels") Reported-by: Radhey Shyam Pandey <radheys@xilinx.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Tested-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Link: https://lore.kernel.org/r/161099092469.2495902.5064826526660062342.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Cc: stable@vger.kernel.org # 5.9+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-02-17 11:02:21 +01:00
arch	arm/xen: Don't probe xenbus as part of an early initcall	2021-02-17 11:02:21 +01:00
block	blk-cgroup: Use cond_resched() when destroy blkgs	2021-02-13 13:55:13 +01:00
certs	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
crypto	crypto: xor - Fix divide error in do_xor_speed()	2021-01-27 11:54:52 +01:00
Documentation	ovl: implement volatile-specific fsync error behaviour	2021-02-10 09:29:16 +01:00
drivers	dmaengine: move channel device_node deletion to driver	2021-02-17 11:02:21 +01:00
fs	squashfs: add more sanity checks in xattr id lookup	2021-02-13 13:55:19 +01:00
include	arm/xen: Don't probe xenbus as part of an early initcall	2021-02-17 11:02:21 +01:00
init	fgraph: Initialize tracing_graph_pause at task creation	2021-02-10 09:29:16 +01:00
ipc	ipc: adjust proc_ipc_sem_dointvec definition to match prototype	2020-09-05 12:14:29 -07:00
kernel	cgroup: fix psi monitor for root cgroup	2021-02-17 11:02:21 +01:00
lib	iov_iter: fix the uaccess area in copy_compat_iovec_from_user	2021-01-27 11:55:09 +01:00
LICENSES	LICENSES/deprecated: add Zlib license text	2020-09-16 14:33:49 +02:00
mm	Revert "mm: memcontrol: avoid workload stalls when lowering memory.high"	2021-02-13 13:55:17 +01:00
net	SUNRPC: Handle 0 length opaque XDR object data properly	2021-02-13 13:55:12 +01:00
samples	samples/bpf: Fix possible hang in xdpsock with multiple threads	2020-12-30 11:53:49 +01:00
scripts	scripts: use pkg-config to locate libcrypto	2021-02-10 09:29:17 +01:00
security	dump_common_audit_data(): fix racy accesses to ->d_name	2021-01-19 18:27:29 +01:00
sound	ASoC: Intel: sof_sdw: set proper flags for Dell TGL-H SKU 0A5E	2021-02-13 13:55:07 +01:00
tools	objtool: Fix seg fault with Clang non-section symbols	2021-02-17 11:02:20 +01:00
usr	Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-08-07 13:29:39 -07:00
virt	KVM: Forbid the use of tagged userspace addresses for memslots	2021-02-03 23:28:41 +01:00
.clang-format	RDMA 5.10 pull request	2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore	Opt out of scripts/get_maintainer.pl	2019-05-16 10:53:40 -07:00
.gitattributes	.gitattributes: use 'dts' diff driver for dts files	2019-12-04 19:44:11 -08:00
.gitignore	.gitignore: docs: ignore sphinx_*/ directories	2020-09-10 10:44:31 -06:00
.mailmap	mailmap: add two more addresses of Uwe Kleine-König	2020-12-06 10:19:07 -08:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	MAINTAINERS: Move Jason Cooper to CREDITS	2020-11-30 10:20:34 +01:00
Kbuild	kbuild: rename hostprogs-y/always to hostprogs/always-y	2020-02-04 01:53:07 +09:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-12-10 15:30:13 -08:00
Makefile	Linux 5.10.16	2021-02-13 13:55:19 +01:00
README	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00

README

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.