From d68de09c0fb3dbc5ec482ad65c1790c9a68cda86 Mon Sep 17 00:00:00 2001
From: Noah Pendleton <noah.pendleton@gmail.com>
Date: Tue, 8 Oct 2019 10:04:12 -0400
Subject: [PATCH] boards: arm: stm32: fix out of bounds access

Fix an out of bounds access when `CONFIG_SOC_SERIES_STM32F1X` is
enabled.

Signed-off-by: Noah Pendleton <noah.pendleton@gmail.com>
---
 drivers/adc/adc_stm32.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/adc/adc_stm32.c b/drivers/adc/adc_stm32.c
index da8511bbec8..eeac46fd5ef 100644
--- a/drivers/adc/adc_stm32.c
+++ b/drivers/adc/adc_stm32.c
@@ -246,10 +246,14 @@ static int start_read(struct device *dev, const struct adc_sequence *sequence)
 	case 10:
 		resolution = table_resolution[2];
 		break;
-#endif
 	case 12:
 		resolution = table_resolution[3];
 		break;
+#else
+	case 12:
+		resolution = table_resolution[0];
+		break;
+#endif
 	default:
 		LOG_ERR("Invalid resolution");
 		return -EINVAL;