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authorKashyap, Desai <kashyap.desai@lsi.com>2009-08-07 19:37:14 +0530
committerJames Bottomley <James.Bottomley@suse.de>2009-08-13 16:30:03 -0500
commit6bd4e1e4d6023f4da069fd68729c502cc4e6dfd0 (patch)
tree8d72a054d45f1a779b0b7cf0f7d332646c6842a4 /drivers/scsi/mpt2sas
parentbe9e8cd75ce8d94ae4aab721fdcc337fa78a9090 (diff)
[SCSI] mpt2sas: fix infinite loop inside config request
This restriction is introduced just to avoid loop of config_request. Retry must be limited so we have restricted config request to maximum 2 times. Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/mpt2sas')
-rw-r--r--drivers/scsi/mpt2sas/mpt2sas_config.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_config.c b/drivers/scsi/mpt2sas/mpt2sas_config.c
index 58cfb97846f..1c6658c6023 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_config.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_config.c
@@ -247,6 +247,12 @@ _config_request(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigRequest_t
retry_count = 0;
retry_config:
+ if (retry_count) {
+ if (retry_count > 2) /* attempt only 2 retries */
+ return -EFAULT;
+ printk(MPT2SAS_INFO_FMT "%s: attempting retry (%d)\n",
+ ioc->name, __func__, retry_count);
+ }
wait_state_count = 0;
ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {