i2c: cadence: Remove `irq` field from driver state struct

The irq field of the driver state struct is only used in the probe
function. There is no need to keep it around. Remove it from the state
struct and use a on-stack variable instead.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

drivers/i2c/busses/i2c-cadence.c

@@ -173,7 +173,6 @@ enum cdns_i2c_slave_state {
  * @send_count:		Number of bytes still expected to send
  * @recv_count:		Number of bytes still expected to receive
  * @curr_recv_count:	Number of bytes to be received in current transfer
- * @irq:		IRQ number
  * @input_clk:		Input clock to I2C controller
  * @i2c_clk:		Maximum I2C clock speed
  * @bus_hold_flag:	Flag used in repeated start for clearing HOLD bit
@@ -198,7 +197,6 @@ struct cdns_i2c {
 	unsigned int send_count;
 	unsigned int recv_count;
 	unsigned int curr_recv_count;
-	int irq;
 	unsigned long input_clk;
 	unsigned int i2c_clk;
 	unsigned int bus_hold_flag;
@@ -1244,7 +1242,7 @@ static int cdns_i2c_probe(struct platform_device *pdev)
 {
 	struct resource *r_mem;
 	struct cdns_i2c *id;
-	int ret;
+	int ret, irq;
 	const struct of_device_id *match;
 
 	id = devm_kzalloc(&pdev->dev, sizeof(*id), GFP_KERNEL);
@@ -1275,10 +1273,9 @@ static int cdns_i2c_probe(struct platform_device *pdev)
 	if (IS_ERR(id->membase))
 		return PTR_ERR(id->membase);
 
-	ret = platform_get_irq(pdev, 0);
-	if (ret < 0)
-		return ret;
-	id->irq = ret;
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
 
 	id->adap.owner = THIS_MODULE;
 	id->adap.dev.of_node = pdev->dev.of_node;
@@ -1329,10 +1326,10 @@ static int cdns_i2c_probe(struct platform_device *pdev)
 		goto err_clk_dis;
 	}
 
-	ret = devm_request_irq(&pdev->dev, id->irq, cdns_i2c_isr, 0,
+	ret = devm_request_irq(&pdev->dev, irq, cdns_i2c_isr, 0,
 				 DRIVER_NAME, id);
 	if (ret) {
-		dev_err(&pdev->dev, "cannot get irq %d\n", id->irq);
+		dev_err(&pdev->dev, "cannot get irq %d\n", irq);
 		goto err_clk_dis;
 	}
 	cdns_i2c_init(id);
@@ -1342,7 +1339,7 @@ static int cdns_i2c_probe(struct platform_device *pdev)
 		goto err_clk_dis;
 
 	dev_info(&pdev->dev, "%u kHz mmio %08lx irq %d\n",
-		 id->i2c_clk / 1000, (unsigned long)r_mem->start, id->irq);
+		 id->i2c_clk / 1000, (unsigned long)r_mem->start, irq);
 
 	return 0;