spi: pxa2xx: Introduce int_stop_and_reset() helper

Currently we have three times the same few lines repeated in the code.
Deduplicate them by newly introduced int_stop_and_reset() helper.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210510124134.24638-8-andriy.shevchenko@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-pxa2xx.c

@@ -620,13 +620,20 @@ static void reset_sccr1(struct driver_data *drv_data)
 	pxa2xx_spi_write(drv_data, SSCR1, sccr1_reg);
 }
 
-static void int_error_stop(struct driver_data *drv_data, const char *msg)
+static void int_stop_and_reset(struct driver_data *drv_data)
 {
-	/* Stop and reset SSP */
+	/* Clear and disable interrupts */
 	write_SSSR_CS(drv_data, drv_data->clear_sr);
 	reset_sccr1(drv_data);
-	if (!pxa25x_ssp_comp(drv_data))
-		pxa2xx_spi_write(drv_data, SSTO, 0);
+	if (pxa25x_ssp_comp(drv_data))
+		return;
+
+	pxa2xx_spi_write(drv_data, SSTO, 0);
+}
+
+static void int_error_stop(struct driver_data *drv_data, const char *msg)
+{
+	int_stop_and_reset(drv_data);
 	pxa2xx_spi_flush(drv_data);
 	pxa2xx_spi_off(drv_data);
 
@@ -638,11 +645,7 @@ static void int_error_stop(struct driver_data *drv_data, const char *msg)
 
 static void int_transfer_complete(struct driver_data *drv_data)
 {
-	/* Clear and disable interrupts */
-	write_SSSR_CS(drv_data, drv_data->clear_sr);
-	reset_sccr1(drv_data);
-	if (!pxa25x_ssp_comp(drv_data))
-		pxa2xx_spi_write(drv_data, SSTO, 0);
+	int_stop_and_reset(drv_data);
 
 	spi_finalize_current_transfer(drv_data->controller);
 }
@@ -1151,11 +1154,7 @@ static int pxa2xx_spi_slave_abort(struct spi_controller *controller)
 {
 	struct driver_data *drv_data = spi_controller_get_devdata(controller);
 
-	/* Stop and reset SSP */
-	write_SSSR_CS(drv_data, drv_data->clear_sr);
-	reset_sccr1(drv_data);
-	if (!pxa25x_ssp_comp(drv_data))
-		pxa2xx_spi_write(drv_data, SSTO, 0);
+	int_stop_and_reset(drv_data);
 	pxa2xx_spi_flush(drv_data);
 	pxa2xx_spi_off(drv_data);