ata: pata_octeon_cf: Fix refcount leak in octeon_cf_probe

[ Upstream commit 10d6bdf532902be1d8aa5900b3c03c5671612aa2 ]

of_find_device_by_node() takes reference, we should use put_device()
to release it when not need anymore.
Add missing put_device() to avoid refcount leak.

Fixes: 43f01da0f279 ("MIPS/OCTEON/ata: Convert pata_octeon_cf.c to use device tree.")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/ata/pata_octeon_cf.c b/drivers/ata/pata_octeon_cf.c
index b5a3f710d76de1f6b5e439023792fcd89c90adc3..4cc8a1027888aaf5bb18bebedb6c434682e18311 100644 (file)
--- a/drivers/ata/pata_octeon_cf.c
+++ b/drivers/ata/pata_octeon_cf.c
@@ -888,12 +888,14 @@ static int octeon_cf_probe(struct platform_device *pdev)
                                int i;
                                res_dma = platform_get_resource(dma_dev, IORESOURCE_MEM, 0);
                                if (!res_dma) {
+                                       put_device(&dma_dev->dev);
                                        of_node_put(dma_node);
                                        return -EINVAL;
                                }
                                cf_port->dma_base = (u64)devm_ioremap(&pdev->dev, res_dma->start,
                                                                         resource_size(res_dma));
                                if (!cf_port->dma_base) {
+                                       put_device(&dma_dev->dev);
                                        of_node_put(dma_node);
                                        return -EINVAL;
                                }
@@ -903,6 +905,7 @@ static int octeon_cf_probe(struct platform_device *pdev)
                                        irq = i;
                                        irq_handler = octeon_cf_interrupt;
                                }
+                               put_device(&dma_dev->dev);
                        }
                        of_node_put(dma_node);
                }