crypto: aspeed - fix double free caused by devm

The clock obtained via devm_clk_get_enabled() is automatically managed
by devres and will be disabled and freed on driver detach. Manually
calling clk_disable_unprepare() in error path and remove function
causes double free.

Remove the manual clock cleanup in both aspeed_acry_probe()'s error
path and aspeed_acry_remove().

Fixes: 2f1cf4e50c95 ("crypto: aspeed - Add ACRY RSA driver")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/aspeed/aspeed-acry.c b/drivers/crypto/aspeed/aspeed-acry.c
index 8d1c79aaca07d7c2ef5abcff55677b9c29d51bf0..5993bcba971635b5a17646ee76e91ae69b324974 100644 (file)
--- a/drivers/crypto/aspeed/aspeed-acry.c
+++ b/drivers/crypto/aspeed/aspeed-acry.c
@@ -787,7 +787,6 @@ static int aspeed_acry_probe(struct platform_device *pdev)
 err_engine_rsa_start:
        crypto_engine_exit(acry_dev->crypt_engine_rsa);
 clk_exit:
-       clk_disable_unprepare(acry_dev->clk);
 
        return rc;
 }
@@ -799,7 +798,6 @@ static void aspeed_acry_remove(struct platform_device *pdev)
        aspeed_acry_unregister(acry_dev);
        crypto_engine_exit(acry_dev->crypt_engine_rsa);
        tasklet_kill(&acry_dev->done_task);
-       clk_disable_unprepare(acry_dev->clk);
 }
 
 MODULE_DEVICE_TABLE(of, aspeed_acry_of_matches);