From: Suman Anna <s-anna@xxxxxx>
[ Upstream commit 4c0716ee1d973f6504d13f0e8d4d10350c85ad37 ]
The sa_dma_init() function doesn't release the requested dma channels
on all failure paths. Any failure in this function also ends up
leaking the dma pool created in sa_init_mem() in the sa_ul_probe()
function. Fix all of these issues.
Fixes: 7694b6ca649f ("crypto: sa2ul - Add crypto driver")
Signed-off-by: Suman Anna <s-anna@xxxxxx>
Reviewed-by: Tero Kristo <kristo@xxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/crypto/sa2ul.c | 21 ++++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)
diff --git a/drivers/crypto/sa2ul.c b/drivers/crypto/sa2ul.c
index b0f0502a5bb0..efde3e96f62d 100644
--- a/drivers/crypto/sa2ul.c
+++ b/drivers/crypto/sa2ul.c
@@ -2275,9 +2275,9 @@ static int sa_dma_init(struct sa_crypto_data *dd)
dd->dma_rx2 = dma_request_chan(dd->dev, "rx2");
if (IS_ERR(dd->dma_rx2)) {
- dma_release_channel(dd->dma_rx1);
- return dev_err_probe(dd->dev, PTR_ERR(dd->dma_rx2),
- "Unable to request rx2 DMA channel\n");
+ ret = dev_err_probe(dd->dev, PTR_ERR(dd->dma_rx2),
+ "Unable to request rx2 DMA channel\n");
+ goto err_dma_rx2;
}
dd->dma_tx = dma_request_chan(dd->dev, "tx");
@@ -2298,28 +2298,31 @@ static int sa_dma_init(struct sa_crypto_data *dd)
if (ret) {
dev_err(dd->dev, "can't configure IN dmaengine slave: %d\n",
ret);
- return ret;
+ goto err_dma_config;
}
ret = dmaengine_slave_config(dd->dma_rx2, &cfg);
if (ret) {
dev_err(dd->dev, "can't configure IN dmaengine slave: %d\n",
ret);
- return ret;
+ goto err_dma_config;
}
ret = dmaengine_slave_config(dd->dma_tx, &cfg);
if (ret) {
dev_err(dd->dev, "can't configure OUT dmaengine slave: %d\n",
ret);
- return ret;
+ goto err_dma_config;
}
return 0;
+err_dma_config:
+ dma_release_channel(dd->dma_tx);
err_dma_tx:
- dma_release_channel(dd->dma_rx1);
dma_release_channel(dd->dma_rx2);
+err_dma_rx2:
+ dma_release_channel(dd->dma_rx1);
return ret;
}
@@ -2364,7 +2367,7 @@ static int sa_ul_probe(struct platform_device *pdev)
sa_init_mem(dev_data);
ret = sa_dma_init(dev_data);
if (ret)
- goto disable_pm_runtime;
+ goto destroy_dma_pool;
spin_lock_init(&dev_data->scid_lock);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -2394,9 +2397,9 @@ release_dma:
dma_release_channel(dev_data->dma_rx1);
dma_release_channel(dev_data->dma_tx);
+destroy_dma_pool:
dma_pool_destroy(dev_data->sc_pool);
-disable_pm_runtime:
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
--
2.30.2
