dmaengine: ti: dma-crossbar: Fix a memory leak bug

In ti_dra7_xbar_probe(), 'rsv_events' is allocated through kcalloc(). Then
of_property_read_u32_array() is invoked to search for the property.
However, if this process fails, 'rsv_events' is not deallocated, leading to
a memory leak bug. To fix this issue, free 'rsv_events' before returning
the error.

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/1565938136-7249-1-git-send-email-wenwen@cs.uga.edu
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/ti/dma-crossbar.c b/drivers/dma/ti/dma-crossbar.c
index ad2f0a4cd6a4d1e413ef619eb95ef88c0266cd59..f255056696eecc9aa1f7535bf15eebcba9782850 100644 (file)
--- a/drivers/dma/ti/dma-crossbar.c
+++ b/drivers/dma/ti/dma-crossbar.c
@@ -391,8 +391,10 @@ static int ti_dra7_xbar_probe(struct platform_device *pdev)
 
                ret = of_property_read_u32_array(node, pname, (u32 *)rsv_events,
                                                 nelm * 2);
-               if (ret)
+               if (ret) {
+                       kfree(rsv_events);
                        return ret;
+               }
 
                for (i = 0; i < nelm; i++) {
                        ti_dra7_xbar_reserve(rsv_events[i][0], rsv_events[i][1],