[PATCH] crypto: sahara - propagate the error on clk_disable_unprepare() failure
From: Fabio Estevam <festevam@gmail.com>
Date: 2015-06-20 18:30:59
From: Fabio Estevam <redacted> clk_prepare_enable() may fail, so we should better check its return value and propagate it in the case of error. Signed-off-by: Fabio Estevam <redacted> --- drivers/crypto/sahara.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c
index 6be377f..397a500b 100644
--- a/drivers/crypto/sahara.c
+++ b/drivers/crypto/sahara.c@@ -1578,8 +1578,12 @@ static int sahara_probe(struct platform_device *pdev) init_completion(&dev->dma_completion); - clk_prepare_enable(dev->clk_ipg); - clk_prepare_enable(dev->clk_ahb); + err = clk_prepare_enable(dev->clk_ipg); + if (err) + goto err_link; + err = clk_prepare_enable(dev->clk_ahb); + if (err) + goto clk_ipg_disable; version = sahara_read(dev, SAHARA_REG_VERSION); if (of_device_is_compatible(pdev->dev.of_node, "fsl,imx27-sahara")) {
@@ -1619,10 +1623,11 @@ err_algs: dma_free_coherent(&pdev->dev, SAHARA_MAX_HW_LINK * sizeof(struct sahara_hw_link), dev->hw_link[0], dev->hw_phys_link[0]); - clk_disable_unprepare(dev->clk_ipg); - clk_disable_unprepare(dev->clk_ahb); kthread_stop(dev->kthread); dev_ptr = NULL; + clk_disable_unprepare(dev->clk_ahb); +clk_ipg_disable: + clk_disable_unprepare(dev->clk_ipg); err_link: dma_free_coherent(&pdev->dev, 2 * AES_KEYSIZE_128,
--
1.9.1