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dmaengine: ti: k3-udma-glue: fix memory leak when register device fail

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If device_register() fails, it should call put_device() to give
up reference, the name allocated in dev_set_name() can be freed
in callback function kobject_cleanup().

Fixes: 5b65781d06 ("dmaengine: ti: k3-udma-glue: Add support for K3 PKTDMA")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20221020062827.2914148-1-yangyingliang@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Yang Yingliang 2022-10-20 14:28:27 +08:00 • committed by Vinod Koul
parent 081195d17a
commit ac2b9f34f0
1 changed files with 3 additions and 0 deletions
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3
drivers/dma/ti/k3-udma-glue.c
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@ -299,6 +299,7 @@ struct k3_udma_glue_tx_channel *k3_udma_glue_request_tx_chn(struct device *dev,
ret = device_register(&tx_chn->common.chan_dev);
if (ret) {
dev_err(dev, "Channel Device registration failed %d\n", ret);
put_device(&tx_chn->common.chan_dev);
tx_chn->common.chan_dev.parent = NULL;
goto err;
}
@ -917,6 +918,7 @@ k3_udma_glue_request_rx_chn_priv(struct device *dev, const char *name,
ret = device_register(&rx_chn->common.chan_dev);
if (ret) {
dev_err(dev, "Channel Device registration failed %d\n", ret);
put_device(&rx_chn->common.chan_dev);
rx_chn->common.chan_dev.parent = NULL;
goto err;
}
@ -1048,6 +1050,7 @@ k3_udma_glue_request_remote_rx_chn(struct device *dev, const char *name,
ret = device_register(&rx_chn->common.chan_dev);
if (ret) {
dev_err(dev, "Channel Device registration failed %d\n", ret);
put_device(&rx_chn->common.chan_dev);
rx_chn->common.chan_dev.parent = NULL;
goto err;
}