drivers: crupto: stm32: return error for unknown cipher mode

GeorgeCGV · GeorgeCGV · commit 6678e29b48e5 · 2025-07-16T12:06:58.000+02:00
Returns -EINVAL for unknown cipher mode.

Signed-off-by: Georgij Černyšiov &lt;geo.cgv@gmail.com&gt;
diff --git a/drivers/crypto/crypto_stm32.c b/drivers/crypto/crypto_stm32.c
@@ -448,7 +448,7 @@ static int crypto_stm32_session_setup(const struct device *dev,
 			ctx->ops.ctr_crypt_hndlr = crypto_stm32_ctr_encrypt;
 			break;
 		default:
-			break;
+			return -EINVAL;
 		}
 	} else {
 		switch (mode) {
@@ -471,7 +471,7 @@ static int crypto_stm32_session_setup(const struct device *dev,
 			ctx->ops.ctr_crypt_hndlr = crypto_stm32_ctr_decrypt;
 			break;
 		default:
-			break;
+			return -EINVAL;
 		}
 	}
 

Original file line number	Diff line number	Diff line change
`@@ -448,7 +448,7 @@ static int crypto_stm32_session_setup(const struct device *dev,`
`448`	`448`	`ctx->ops.ctr_crypt_hndlr = crypto_stm32_ctr_encrypt;`
`449`	`449`	`break;`
`450`	`450`	`default:`
`451`		`- break;`
	`451`	`+ return -EINVAL;`
`452`	`452`	`}`
`453`	`453`	`} else {`
`454`	`454`	`switch (mode) {`
`@@ -471,7 +471,7 @@ static int crypto_stm32_session_setup(const struct device *dev,`
`471`	`471`	`ctx->ops.ctr_crypt_hndlr = crypto_stm32_ctr_decrypt;`
`472`	`472`	`break;`
`473`	`473`	`default:`
`474`		`- break;`
	`474`	`+ return -EINVAL;`
`475`	`475`	`}`
`476`	`476`	`}`
`477`	`477`