From: Cyrille Pitchen Subject: [PATCH 06/24] crypto: atmel-aes: propagate error from atmel_aes_hw_version_init() Date: Thu, 17 Dec 2015 17:48:37 +0100 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain Cc: , , , Cyrille Pitchen To: , , Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org Before this patch atmel_aes_hw_version_init() had no returned value. However it calls atmel_aes_hw_init(), which may fail. So check the returned code of atmel_aes_hw_init() and propagate error if needed. Signed-off-by: Cyrille Pitchen --- drivers/crypto/atmel-aes.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c index 7d1b055811c4..9a9e1b88a384 100644 --- a/drivers/crypto/atmel-aes.c +++ b/drivers/crypto/atmel-aes.c @@ -280,16 +280,20 @@ static inline unsigned int atmel_aes_get_version(struct atmel_aes_dev *dd) return atmel_aes_read(dd, AES_HW_VERSION) & 0x00000fff; } -static void atmel_aes_hw_version_init(struct atmel_aes_dev *dd) +static int atmel_aes_hw_version_init(struct atmel_aes_dev *dd) { - atmel_aes_hw_init(dd); + int err; + + err = atmel_aes_hw_init(dd); + if (err) + return err; dd->hw_version = atmel_aes_get_version(dd); - dev_info(dd->dev, - "version: 0x%x\n", dd->hw_version); + dev_info(dd->dev, "version: 0x%x\n", dd->hw_version); clk_disable_unprepare(dd->iclk); + return 0; } static void atmel_aes_finish_req(struct atmel_aes_dev *dd, int err) @@ -1407,7 +1411,9 @@ static int atmel_aes_probe(struct platform_device *pdev) goto res_err; } - atmel_aes_hw_version_init(aes_dd); + err = atmel_aes_hw_version_init(aes_dd); + if (err) + goto res_err; atmel_aes_get_cap(aes_dd); -- 1.8.2.2