spi: bitbang: Make spi_bitbang_stop() return void

spi_bitbang_stop() never fails, so make it return void.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

5 files changed, 7 insertions, 12 deletions

diff --git a/drivers/spi/spi-bitbang.c b/drivers/spi/spi-bitbang.c
index bd222f6b677d..67aead248753 100644
--- a/drivers/spi/spi-bitbang.c
+++ b/drivers/spi/spi-bitbang.c
@@ -467,11 +467,9 @@ EXPORT_SYMBOL_GPL(spi_bitbang_start);
 /**
  * spi_bitbang_stop - stops the task providing spi communication
  */
-int spi_bitbang_stop(struct spi_bitbang *bitbang)
+void spi_bitbang_stop(struct spi_bitbang *bitbang)
 {
         spi_unregister_master(bitbang->master);
-
-        return 0;
 }
 EXPORT_SYMBOL_GPL(spi_bitbang_stop);
 
diff --git a/drivers/spi/spi-butterfly.c b/drivers/spi/spi-butterfly.c
index 8081f96bd1d5..ee4f91ccd8fd 100644
--- a/drivers/spi/spi-butterfly.c
+++ b/drivers/spi/spi-butterfly.c
@@ -309,7 +309,6 @@ done:
 static void butterfly_detach(struct parport *p)
 {
         struct butterfly        *pp;
-        int                     status;
 
         /* FIXME this global is ugly ... but, how to quickly get from
          * the parport to the "struct butterfly" associated with it?
@@ -321,7 +320,7 @@ static void butterfly_detach(struct parport *p)
         butterfly = NULL;
 
         /* stop() unregisters child devices too */
-        status = spi_bitbang_stop(&pp->bitbang);
+        spi_bitbang_stop(&pp->bitbang);
 
         /* turn off VCC */
         parport_write_data(pp->port, 0);
diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c
index 7beeb29472ac..b189b958432b 100644
--- a/drivers/spi/spi-gpio.c
+++ b/drivers/spi/spi-gpio.c
@@ -503,13 +503,12 @@ static int spi_gpio_remove(struct platform_device *pdev)
 {
         struct spi_gpio                 *spi_gpio;
         struct spi_gpio_platform_data   *pdata;
-        int                             status;
 
         spi_gpio = platform_get_drvdata(pdev);
         pdata = dev_get_platdata(&pdev->dev);
 
         /* stop() unregisters child devices too */
-        status = spi_bitbang_stop(&spi_gpio->bitbang);
+        spi_bitbang_stop(&spi_gpio->bitbang);
 
         if (SPI_MISO_GPIO != SPI_GPIO_NO_MISO)
                 gpio_free(SPI_MISO_GPIO);
@@ -518,7 +517,7 @@ static int spi_gpio_remove(struct platform_device *pdev)
         gpio_free(SPI_SCK_GPIO);
         spi_master_put(spi_gpio->bitbang.master);
 
-        return status;
+        return 0;
 }
 
 MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/drivers/spi/spi-omap-uwire.c b/drivers/spi/spi-omap-uwire.c
index 9313fd3b413d..a4d7bb557792 100644
--- a/drivers/spi/spi-omap-uwire.c
+++ b/drivers/spi/spi-omap-uwire.c
@@ -539,14 +539,13 @@ static int uwire_probe(struct platform_device *pdev)
 static int uwire_remove(struct platform_device *pdev)
 {
         struct uwire_spi        *uwire = platform_get_drvdata(pdev);
-        int                     status;
 
         // FIXME remove all child devices, somewhere ...
 
-        status = spi_bitbang_stop(&uwire->bitbang);
+        spi_bitbang_stop(&uwire->bitbang);
         uwire_off(uwire);
         iounmap(uwire_base);
-        return status;
+        return 0;
 }
 
 /* work with hotplug and coldplug */
diff --git a/include/linux/spi/spi_bitbang.h b/include/linux/spi/spi_bitbang.h
index daebaba886aa..85578d4be034 100644
--- a/include/linux/spi/spi_bitbang.h
+++ b/include/linux/spi/spi_bitbang.h
@@ -42,6 +42,6 @@ extern int spi_bitbang_setup_transfer(struct spi_device *spi,
 
 /* start or stop queue processing */
 extern int spi_bitbang_start(struct spi_bitbang *spi);
-extern int spi_bitbang_stop(struct spi_bitbang *spi);
+extern void spi_bitbang_stop(struct spi_bitbang *spi);
 
 #endif  /* __SPI_BITBANG_H */