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Subject[patch 41/71] SCSI: mpt2sas: Excessive log info causes sas iounit page time out
2.6.30-stable review patch.  If anyone has any objections, please let us know.

------------------
From: Kashyap, Desai <kashyap.desai@lsi.com>
commit be9e8cd75ce8d94ae4aab721fdcc337fa78a9090 upstream.

Inhibit 0x3117 loginfos - during cable pull, there are too many printks going
to the syslog, this is have impact on how fast the interrupt routine can handle
keeping up with command completions; this was the root cause to the config
pages timeouts.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/scsi/mpt2sas/mpt2sas_base.c | 4 ++++
drivers/scsi/mpt2sas/mpt2sas_scsih.c | 4 ++++
2 files changed, 8 insertions(+)
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -440,6 +440,10 @@ _base_sas_log_info(struct MPT2SAS_ADAPTE
if (sas_loginfo.dw.bus_type != 3 /*SAS*/)
return;

+ /* each nexus loss loginfo */
+ if (log_info == 0x31170000)
+ return;
+
/* eat the loginfos associated with task aborts */
if (ioc->ignore_loginfos && (log_info == 30050000 || log_info ==
0x31140000 || log_info == 0x31130000))
--- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
@@ -2560,6 +2560,10 @@ _scsih_scsi_ioc_info(struct MPT2SAS_ADAP
char *desc_ioc_state = NULL;
char *desc_scsi_status = NULL;
char *desc_scsi_state = ioc->tmp_string;
+ u32 log_info = le32_to_cpu(mpi_reply->IOCLogInfo);
+
+ if (log_info == 0x31170000)
+ return;

switch (ioc_status) {
case MPI2_IOCSTATUS_SUCCESS:



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