[SCSI] mpt fusion: don't oops if NumPhys==0

Don't oops if NumPhys==0, instead return -ENODEV. This patch fixes http://bugzilla.kernel.org/show_bug.cgi?id=9909 Signed-off-by: Krzysztof Piotr Oledzki <[email protected]> Acked-by: Eric Moore <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: James Bottomley <[email protected]>
ambv · Mar 5, 2008 · 51f39ea · 51f39ea
1 parent 45ab33b
commit 51f39ea
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
@@ -1701,6 +1701,11 @@ mptsas_sas_expander_pg0(MPT_ADAPTER *ioc, struct mptsas_portinfo *port_info,
 	if (error)
 		goto out_free_consistent;
 
+	if (!buffer->NumPhys) {
+		error = -ENODEV;
+		goto out_free_consistent;
+	}
+
 	/* save config data */
 	port_info->num_phys = buffer->NumPhys;
 	port_info->phy_info = kcalloc(port_info->num_phys,