cxl/port: Unify endpoint and switch port lookup

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In support of generic CXL protocol error handling across various 'struct
cxl_port' types, update find_cxl_port_by_uport() to retrieve endpoint CXL
port companions from endpoint PCIe device instances.

The end result is that upstream switch ports and endpoint ports can share
error handling and eventually delete the misplaced cxl_error_handlers from
the cxl_pci class driver.

Reviewed-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Tested-by: Terry Bowman <terry.bowman@amd.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260131000403.2135324-10-dan.j.williams@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>

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Dan Williams 2026-01-30 16:04:03 -08:00 • committed by Dave Jiang

parent dab7162d0a

commit 2d2b3fe002

1 changed files with 11 additions and 1 deletions

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drivers/cxl/core/port.c

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