Messages in this thread Patch in this message | | | From | Julia Lawall <> | Subject | [PATCH 10/16] zram: fix error return code | Date | Sun, 5 Apr 2015 14:06:30 +0200 |
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Return a negative error code on failure.
A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/)
// <smpl> @@ identifier ret; expression e1,e2; @@ ( if (\(ret < 0\|ret != 0\)) { ... return ret; } | ret = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
--- drivers/block/zram/zram_drv.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 759ee09..fe67ebb 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1188,6 +1188,7 @@ static int zram_add(int device_id) if (!queue) { pr_err("Error allocating disk queue for device %d\n", device_id); + ret = -ENOMEM; goto out_free_idr; } @@ -1198,6 +1199,7 @@ static int zram_add(int device_id) if (!zram->disk) { pr_warn("Error allocating disk structure for device %d\n", device_id); + ret = -ENOMEM; goto out_free_queue; }
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