linux-stable/drivers/cxl
Dan Williams d357dd8ad2 cxl/region: Convert cxl_pmem_region_alloc to scope-based resource management
A recent bugfix to cxl_pmem_region_alloc() to fix an
error-unwind-memleak [1], highlighted a use case for scope-based resource
management.

Delete the goto for releasing @cxl_region_rwsem, and return error codes
directly from error condition paths.

The caller, devm_cxl_add_pmem_region(), is no longer given @cxlr_pmem
directly it must retrieve it from @cxlr->cxlr_pmem. This retrieval from
@cxlr was already in place for @cxlr->cxl_nvb, and converting
cxl_pmem_region_alloc() to return an int makes it less awkward to handle
no_free_ptr().

Cc: Li Zhijian <lizhijian@fujitsu.com>
Reported-by: Jonathan Cameron <Jonathan.Cameron@Huawei.com>
Closes: http://lore.kernel.org/r/20240430174540.000039ce@Huawei.com
Link: http://lore.kernel.org/r/20240428030748.318985-1-lizhijian@fujitsu.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/171451430965.1147997.15782562063090960666.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
2024-05-01 09:17:04 -07:00
..
core cxl/region: Convert cxl_pmem_region_alloc to scope-based resource management 2024-05-01 09:17:04 -07:00
acpi.c cxl/acpi: Cleanup __cxl_parse_cfmws() 2024-05-01 09:01:14 -07:00
cxl.h cxl/acpi: Cleanup __cxl_parse_cfmws() 2024-05-01 09:01:14 -07:00
cxlmem.h cxl/mbox: Add Clear Log mailbox command 2024-04-30 08:48:10 -07:00
cxlpci.h cxl/pci: Get rid of pointer arithmetic reading CDAT table 2024-03-12 23:52:29 -07:00
Kconfig cxl: Fix use of phys_to_target_node() for x86 2024-04-30 10:43:48 -07:00
Makefile cxl/pmem: Introduce nvdimm_security_ops with ->get_flags() operation 2022-11-30 16:30:47 -08:00
mem.c cxl: Fix sysfs export of qos_class for memdev 2024-02-16 23:20:34 -08:00
pci.c acpi/ghes: Remove CXL CPER notifications 2024-02-20 22:50:52 -08:00
pmem.c cxl: Fix compile warning for cxl_security_ops extern 2024-04-30 10:43:48 -07:00
pmu.h cxl/pci: Find and register CXL PMU devices 2023-05-30 11:20:35 -07:00
port.c cxl: Refactor to use __free() for cxl_root allocation in cxl_endpoint_port_probe() 2024-01-05 14:36:29 -08:00
security.c Merge branch 'for-6.5/cxl-type-2' into for-6.5/cxl 2023-06-25 17:16:51 -07:00