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scsi: target: tcmu: Return from tcmu_handle_completions() if cmd_id not found

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[ Upstream commit 9814b55cde ]

If tcmu_handle_completions() finds an invalid cmd_id while looping over cmd
responses from userspace it sets TCMU_DEV_BIT_BROKEN and breaks the
loop. This means that it does further handling for the tcmu device.

Skip that handling by replacing 'break' with 'return'.

Additionally change tcmu_handle_completions() from unsigned int to bool,
since the value used in return already is bool.

Link: https://lore.kernel.org/r/20210423150123.24468-1-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Bodo Stroesser 2021-04-23 17:01:23 +02:00 committed by Greg Kroah-Hartman
parent 3611ce2f23
commit d47d0d1a1f
1 changed files with 2 additions and 2 deletions
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4
drivers/target/target_core_user.c
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@ -1391,7 +1391,7 @@ static int tcmu_run_tmr_queue(struct tcmu_dev *udev)
return 1;
}
static unsigned int tcmu_handle_completions(struct tcmu_dev *udev)
static bool tcmu_handle_completions(struct tcmu_dev *udev)
{
struct tcmu_mailbox *mb;
struct tcmu_cmd *cmd;
@ -1434,7 +1434,7 @@ static unsigned int tcmu_handle_completions(struct tcmu_dev *udev)
pr_err("cmd_id %u not found, ring is broken\n",
entry->hdr.cmd_id);
set_bit(TCMU_DEV_BIT_BROKEN, &udev->flags);
break;
return false;
}
tcmu_handle_completion(cmd, entry);