crypto: atmel-aes - propagate error from atmel_aes_hw_version_init()

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 <cyrille.pitchen@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index 7d1b055..9a9e1b8 100644 (file)
--- 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);