[SCSI] libiscsi: fix iscsi pool error path

Memory freeing in iscsi_pool_free() looks wrong to me. Either q->pool
can be NULL and this should be tested before dereferencing it, or it
can't be NULL and it shouldn't be tested at all. As far as I can see,
the only case where q->pool is NULL is on early error in
iscsi_pool_init(). One possible way to fix the bug is thus to not
call iscsi_pool_free() in this case (nothing needs to be freed anyway)
and then we can get rid of the q->pool check.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 809d32d95c76..c33e28fd49bc 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -1944,7 +1944,7 @@ iscsi_pool_init(struct iscsi_pool *q, int max, void ***items, int item_size)
                 num_arrays++;
         q->pool = kzalloc(num_arrays * max * sizeof(void*), GFP_KERNEL);
         if (q->pool == NULL)
-                goto enomem;
+                return -ENOMEM;
 
         q->queue = kfifo_init((void*)q->pool, max * sizeof(void*),
                               GFP_KERNEL, NULL);
@@ -1979,8 +1979,7 @@ void iscsi_pool_free(struct iscsi_pool *q)
 
         for (i = 0; i < q->max; i++)
                 kfree(q->pool[i]);
-        if (q->pool)
-                kfree(q->pool);
+        kfree(q->pool);
         kfree(q->queue);
 }
 EXPORT_SYMBOL_GPL(iscsi_pool_free);