scsi: mpt3sas: wait for and flush running commands on shutdown/unload

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This patch finishes all outstanding SCSI IO commands (but not other commands,
e.g., task management) in the shutdown and unload paths.

It first waits for the commands to complete (this is done after setting
'ioc->remove_host = 1 ', which prevents new commands to be queued) then it
flushes commands that might still be running.

This avoids triggering error handling (e.g., abort command) for all commands
possibly completed by the adapter after interrupts disabled.

[mauricfo: introduced something in commit message.]

Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Tested-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

...

This commit is contained in:

Sreekanth Reddy 2018-02-16 20:39:58 -02:00 • committed by Martin K. Petersen

parent 9ff549ffb4

commit c666d3be99

3 changed files with 16 additions and 5 deletions

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8

drivers/scsi/mpt3sas/mpt3sas_base.c

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3

drivers/scsi/mpt3sas/mpt3sas_base.h

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10

drivers/scsi/mpt3sas/mpt3sas_scsih.c

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