The mpt2sas driver crashes if the BIOS does not set up at least one
memory I/O resource. This failure can happen if the device is too
slow to respond during POST and is missed by the BIOS, but Linux
then detects the device later in the boot process.
Signed-off-by: Timothy Pearson <tpearson@xxxxxxxxxxxxxxxxxxxxxxxx>
Tested-by: Timothy Pearson <tpearson@xxxxxxxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/mpt2sas/mpt2sas_base.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c
index 11248de..b70fa5a 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -1582,6 +1582,13 @@ mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
}
}
+ if (ioc->chip == NULL) {
+ printk(MPT2SAS_ERR_FMT "unable to map "
+ "adapter memory (resource not found)!\n", ioc->name);
+ r = -EINVAL;
+ goto out_fail;
+ }
+
_base_mask_interrupts(ioc);
r = _base_get_ioc_facts(ioc, CAN_SLEEP);
--
1.7.9.5
--
Timothy Pearson
Raptor Engineering
+1 (415) 727-8645
http://www.raptorengineeringinc.com
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