drivers: i2c: check if clock device is ready before accessing

Add check for device_is_ready() before accessing clock control devices.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>

drivers/i2c/i2c_esp32.c

@@ -680,6 +680,11 @@ static int IRAM_ATTR i2c_esp32_init(const struct device *dev)
 		return -EINVAL;
 	}
 
+	if (!device_is_ready(config->clock_dev)) {
+		LOG_ERR("clock control device not ready");
+		return -ENODEV;
+	}
+
 	clock_control_on(config->clock_dev, config->clock_subsys);
 
 	esp_intr_alloc(config->irq_source, 0, i2c_esp32_isr, (void *)dev, NULL);

drivers/i2c/i2c_ll_stm32.c

@@ -223,6 +223,11 @@ static int i2c_stm32_init(const struct device *dev)
 	 */
 	k_sem_init(&data->bus_mutex, 1, 1);
 
+	if (!device_is_ready(clock)) {
+		LOG_ERR("clock control device not ready");
+		return -ENODEV;
+	}
+
 	if (clock_control_on(clock,
 		(clock_control_subsys_t *) &cfg->pclken) != 0) {
 		LOG_ERR("i2c: failure enabling clock");

drivers/i2c/i2c_lpc11u6x.c

@@ -314,6 +314,10 @@ static int lpc11u6x_i2c_init(const struct device *dev)
 		return err;
 	}
 
+	if (!device_is_ready(cfg->clock_dev)) {
+		return -ENODEV;
+	}
+
 	/* Configure clock and de-assert reset for I2Cx */
 	clock_control_on(cfg->clock_dev, (clock_control_subsys_t) cfg->clkid);
 

drivers/i2c/i2c_mcux_flexcomm.c

@@ -335,6 +335,11 @@ static int mcux_flexcomm_init(const struct device *dev)
 
 	k_sem_init(&data->device_sync_sem, 0, K_SEM_MAX_LIMIT);
 
+	if (!device_is_ready(config->clock_dev)) {
+		LOG_ERR("clock control device not ready");
+		return -ENODEV;
+	}
+
 	/* Get the clock frequency */
 	if (clock_control_get_rate(config->clock_dev, config->clock_subsys,
 				   &clock_freq)) {

drivers/i2c/i2c_mcux_lpi2c.c

@@ -315,6 +315,12 @@ static int mcux_lpi2c_init(const struct device *dev)
 
 	k_sem_init(&data->lock, 1, 1);
 	k_sem_init(&data->device_sync_sem, 0, K_SEM_MAX_LIMIT);
+
+	if (!device_is_ready(config->clock_dev)) {
+		LOG_ERR("clock control device not ready");
+		return -ENODEV;
+	}
+
 	if (clock_control_get_rate(config->clock_dev, config->clock_subsys,
 				   &clock_freq)) {
 		return -EINVAL;

drivers/i2c/i2c_npcx_controller.c

@@ -909,6 +909,11 @@ static int i2c_ctrl_init(const struct device *dev)
 	const struct device *const clk_dev = DEVICE_DT_GET(NPCX_CLK_CTRL_NODE);
 	uint32_t i2c_rate;
 
+	if (!device_is_ready(clk_dev)) {
+		LOG_ERR("clock control device not ready");
+		return -ENODEV;
+	}
+
 	/* Turn on device clock first and get source clock freq. */
 	if (clock_control_on(clk_dev,
 		(clock_control_subsys_t *) &config->clk_cfg) != 0) {

drivers/i2c/i2c_rcar.c

@@ -321,6 +321,10 @@ static int i2c_rcar_init(const struct device *dev)
 
 	k_sem_init(&data->int_sem, 0, 1);
 
+	if (!device_is_ready(config->clock_dev)) {
+		return -ENODEV;
+	}
+
 	ret = clock_control_on(config->clock_dev,
 			       (clock_control_subsys_t *)&config->mod_clk);
 

drivers/i2c/i2c_rv32m1_lpi2c.c

@@ -217,6 +217,11 @@ static int rv32m1_lpi2c_init(const struct device *dev)
 
 	CLOCK_SetIpSrc(config->clock_ip_name, config->clock_ip_src);
 
+	if (!device_is_ready(config->clock_dev)) {
+		LOG_ERR("clock control device not ready");
+		return -ENODEV;
+	}
+
 	err = clock_control_on(config->clock_dev, config->clock_subsys);
 	if (err) {
 		LOG_ERR("Could not turn on clock (err %d)", err);