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scsi: mpt3sas: Memset config_cmds.reply buffer with zeros

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Currently config_cmds.reply buffer is not memset to zero before posting
config page request message.  In some cases, for the current config
request, the previous config reply is getting processed and we will observe
PageType mismatch between request to reply buffer. It will be difficult to
debug this type of issue and it confuses by thinking that HBA Firmware
itself posted the wrong config reply.  So it is better to memset the
config_cmds.reply buffer with zeros before issuing the config request.

Link: https://lore.kernel.org/r/1596096229-3341-2-git-send-email-suganath-prabu.subramani@broadcom.com
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Suganath Prabu S 2020-07-30 13:33:43 +05:30 committed by Martin K. Petersen
parent 8bb2dde069
commit f09219e48b
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/mpt3sas/mpt3sas_config.c
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@ -371,7 +371,7 @@ _config_request(struct MPT3SAS_ADAPTER *ioc, Mpi2ConfigRequest_t
}
r = 0;
memset(mpi_reply, 0, sizeof(Mpi2ConfigReply_t));
memset(ioc->config_cmds.reply, 0, sizeof(Mpi2ConfigReply_t));
ioc->config_cmds.status = MPT3_CMD_PENDING;
config_request = mpt3sas_base_get_msg_frame(ioc, smid);
ioc->config_cmds.smid = smid;