diff options
| author | Suman Anna <s-anna@ti.com> | 2021-05-14 19:12:42 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-05-23 03:52:40 +0300 |
| commit | 4c0716ee1d973f6504d13f0e8d4d10350c85ad37 (patch) | |
| tree | 8e280ec7eef29e6c248e821981ca773a53b3557c /drivers | |
| parent | 5c93a2ebc7ad85046fab23f8ac297fc3a86bc903 (diff) | |
| download | linux-4c0716ee1d973f6504d13f0e8d4d10350c85ad37.tar.xz | |
crypto: sa2ul - Fix leaks on failure paths with sa_dma_init()
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@ti.com>
Reviewed-by: Tero Kristo <kristo@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/crypto/sa2ul.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/crypto/sa2ul.c b/drivers/crypto/sa2ul.c index 1c6929fb3a13..3d6f0af2f938 100644 --- a/drivers/crypto/sa2ul.c +++ b/drivers/crypto/sa2ul.c @@ -2300,9 +2300,9 @@ 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"); @@ -2323,28 +2323,31 @@ 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; } @@ -2414,7 +2417,7 @@ 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; match = of_match_node(of_match, dev->of_node); if (!match) { @@ -2454,9 +2457,9 @@ 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); |