[SCSI] ch: Check NULL for kmalloc() return
Verify that ch->dt is not NULL before using it.
Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c
index 7b1633a..fe11c1d4 100644
--- a/drivers/scsi/ch.c
+++ b/drivers/scsi/ch.c
@@ -353,6 +353,12 @@
/* look up the devices of the data transfer elements */
ch->dt = kmalloc(ch->counts[CHET_DT]*sizeof(struct scsi_device),
GFP_KERNEL);
+
+ if (!ch->dt) {
+ kfree(buffer);
+ return -ENOMEM;
+ }
+
for (elem = 0; elem < ch->counts[CHET_DT]; elem++) {
id = -1;
lun = 0;