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scsi: mpt3sas: Diag-Reset when Doorbell-In-Use bit is set during driver load time

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[ Upstream commit 3f5eb062e8aa335643181c480e6c590c6cedfd22 ]

Issue a Diag-Reset when the "Doorbell-In-Use" bit is set during the
driver load/initialization.

Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Link: https://lore.kernel.org/r/20241110173341.11595-2-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ranjan Kumar 2024-11-10 23:03:40 +05:30 • committed by Greg Kroah-Hartman
parent 436df0cfe8
commit 4ed6d56e85
1 changed files with 6 additions and 1 deletions
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7
drivers/scsi/mpt3sas/mpt3sas_base.c
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@ -5695,11 +5695,12 @@ _base_handshake_req_reply_wait(struct MPT3SAS_ADAPTER *ioc, int request_bytes,
int i;
u8 failed;
__le32 *mfp;
int ret_val;
/* make sure doorbell is not in use */
if ((ioc->base_readl(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) {
ioc_err(ioc, "doorbell is in use (line=%d)\n", __LINE__);
return -EFAULT;
goto doorbell_diag_reset;
}
/* clear pending doorbell interrupts from previous state changes */
@ -5789,6 +5790,10 @@ _base_handshake_req_reply_wait(struct MPT3SAS_ADAPTER *ioc, int request_bytes,
le32_to_cpu(mfp[i]));
}
return 0;
doorbell_diag_reset:
ret_val = _base_diag_reset(ioc);
return ret_val;
}
/**