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[SCSI] mpt2sas: fix infinite loop inside config request

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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>
This commit is contained in:
Kashyap, Desai 2009-08-07 19:37:14 +05:30 committed by James Bottomley
parent be9e8cd75c
commit 6bd4e1e4d6
1 changed files with 6 additions and 0 deletions
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6
drivers/scsi/mpt2sas/mpt2sas_config.c
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@ -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) {