spi: stm32: rename interrupt function

Interrupt function is used as a thread so rename it to express
meaning directly by more clear function name.
Signed-off-by: Cezary Gapinski <cezary.gapinski@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-stm32.c

@@ -466,11 +466,11 @@ static bool stm32_spi_can_dma(struct spi_master *master,
 }
 
 /**
- * stm32_spi_irq - Interrupt handler for SPI controller events
+ * stm32_spi_irq_thread - Thread of interrupt handler for SPI controller
  * @irq: interrupt line
  * @dev_id: SPI controller master interface
  */
-static irqreturn_t stm32_spi_irq(int irq, void *dev_id)
+static irqreturn_t stm32_spi_irq_thread(int irq, void *dev_id)
 {
 	struct spi_master *master = dev_id;
 	struct stm32_spi *spi = spi_master_get_devdata(master);
@@ -1113,7 +1113,7 @@ static int stm32_spi_probe(struct platform_device *pdev)
 		goto err_master_put;
 	}
 	ret = devm_request_threaded_irq(&pdev->dev, spi->irq, NULL,
-					stm32_spi_irq, IRQF_ONESHOT,
+					stm32_spi_irq_thread, IRQF_ONESHOT,
 					pdev->name, master);
 	if (ret) {
 		dev_err(&pdev->dev, "irq%d request failed: %d\n", spi->irq,