stm32mp: cmd_stm32key: add get_misc_dev function
Add a helper function to access to BSEC misc driver.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/arch/arm/mach-stm32mp/cmd_stm32key.c b/arch/arm/mach-stm32mp/cmd_stm32key.c
index c4cb634..886c5279 100644
--- a/arch/arm/mach-stm32mp/cmd_stm32key.c
+++ b/arch/arm/mach-stm32mp/cmd_stm32key.c
@@ -14,6 +14,17 @@
#define STM32_OTP_HASH_KEY_START 24
#define STM32_OTP_HASH_KEY_SIZE 8
+static int get_misc_dev(struct udevice **dev)
+{
+ int ret;
+
+ ret = uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(stm32mp_bsec), dev);
+ if (ret)
+ log_err("Can't find stm32mp_bsec driver\n");
+
+ return ret;
+}
+
static void read_hash_value(u32 addr)
{
int i;
@@ -31,13 +42,9 @@
u32 word, val;
int i, ret;
- ret = uclass_get_device_by_driver(UCLASS_MISC,
- DM_DRIVER_GET(stm32mp_bsec),
- &dev);
- if (ret) {
- log_err("Can't find stm32mp_bsec driver\n");
+ ret = get_misc_dev(&dev);
+ if (ret)
return ret;
- }
for (i = 0, word = STM32_OTP_HASH_KEY_START;
i < STM32_OTP_HASH_KEY_SIZE;