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scsi: mpi3mr: Record and report controller firmware faults

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Capture and retain firmware fault codes and extended fault information
whenever the controller enters a fault state.

Maintain a persistent firmware fault counter, expose it via sysfs, and
generate uevents to aid userspace diagnostics and failure analysis.

Co-developed-by: Salomon Dushimirimana <salomondush@google.com>
Signed-off-by: Salomon Dushimirimana <salomondush@google.com>
Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Link: https://patch.msgid.link/20260116060719.32937-7-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Ranjan Kumar 2026-01-16 11:37:17 +05:30 • committed by Martin K. Petersen
commit ec54b348f2
3 changed files with 135 additions and 0 deletions
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