diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2022-12-01 22:33:48 +0100 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2022-12-03 08:10:20 +0100 |
| commit | 4029c32fb601d505dfb92bdf0db9fdcc41fe1434 (patch) | |
| tree | 83412e345070ff2a71d25fe4990bb91e497ae787 /drivers/cxl/cxl.h | |
| parent | cxl/pmem: Remove the cxl_pmem_wq and related infrastructure (diff) | |
| download | linux-4029c32fb601d505dfb92bdf0db9fdcc41fe1434.tar.xz linux-4029c32fb601d505dfb92bdf0db9fdcc41fe1434.zip | |
cxl/acpi: Move rescan to the workqueue
Now that the cxl_mem driver has a need to take the root device lock, the
cxl_bus_rescan() needs to run outside of the root lock context. That
need arises from RCH topologies and the locking that the cxl_mem driver
does to attach a descendant to an upstream port. In the RCH case the
lock needed is the CXL root device lock [1].
Link: http://lore.kernel.org/r/166993045621.1882361.1730100141527044744.stgit@dwillia2-xfh.jf.intel.com [1]
Tested-by: Robert Richter <rrichter@amd.com>
Link: http://lore.kernel.org/r/166993042884.1882361.5633723613683058881.stgit@dwillia2-xfh.jf.intel.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cxl/cxl.h')
| -rw-r--r-- | drivers/cxl/cxl.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index f0ca2d768385..281b1db5a271 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -552,7 +552,8 @@ int devm_cxl_add_endpoint(struct cxl_memdev *cxlmd, struct cxl_dport *parent_dport); struct cxl_port *find_cxl_root(struct device *dev); int devm_cxl_enumerate_ports(struct cxl_memdev *cxlmd); -int cxl_bus_rescan(void); +void cxl_bus_rescan(void); +void cxl_bus_drain(void); struct cxl_port *cxl_mem_find_port(struct cxl_memdev *cxlmd, struct cxl_dport **dport); bool schedule_cxl_memdev_detach(struct cxl_memdev *cxlmd); |