Dan Williams 5c3c067b60 cxl/core/port: Fix unregister_port() lock assertion ... The device_lock_assert() in unregister_port() fails to pick the right device leading to splats like the following from: echo "ACPI0017:00" > /sys/bus/platform/drivers/cxl_acpi/unbind WARNING: CPU: 32 PID: 1147 at include/linux/device.h:787 unregister_port+0x49/0x50 [cxl_c [..] RIP: 0010:unregister_port+0x49/0x50 [cxl_core] [..] Call Trace: <TASK> release_nodes+0x63/0x80 devres_release_all+0x8b/0xc0 __device_release_driver+0x190/0x240 device_driver_detach+0x3e/0xa0 unbind_store+0x113/0x130 Fix it up to assert on the device_lock() for ACPI0017 for root and 1st level ports, and parent ports for all the rest. Fixes: 54cdbf845c ("cxl/port: Add a driver for 'struct cxl_port' objects") Reported-by: Ben Widawsky <ben.widawsky@intel.com> Reviewed-by: Ben Widawsky <ben.widawsky@intel.com> Link: https://lore.kernel.org/r/164439224893.2941117.18331456248117887720.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>		2022-02-11 13:26:49 -08:00
..
core	cxl/core/port: Fix unregister_port() lock assertion	2022-02-11 13:26:49 -08:00
acpi.c	cxl/core/port: Fix / relax decoder target enumeration	2022-02-08 23:15:10 -08:00
cxl.h	cxl/core/port: Add endpoint decoders	2022-02-08 22:57:32 -08:00
cxlmem.h	cxl/mem: Add the cxl_mem driver	2022-02-08 22:57:32 -08:00
cxlpci.h	cxl/pci: Retrieve CXL DVSEC memory info	2022-02-08 22:57:31 -08:00
Kconfig	cxl/mem: Add the cxl_mem driver	2022-02-08 22:57:32 -08:00
Makefile	cxl/mem: Add the cxl_mem driver	2022-02-08 22:57:32 -08:00
mem.c	cxl/mem: Add the cxl_mem driver	2022-02-08 22:57:32 -08:00
pci.c	cxl/pci: Emit device serial number	2022-02-08 22:57:32 -08:00
pmem.c	cxl: Prove CXL locking	2022-02-08 22:57:29 -08:00
port.c	cxl/core/port: Add endpoint decoders	2022-02-08 22:57:32 -08:00