iio: adc: ti_am335x_adc: Remove a couple of unused 'read' variables

Fixes the following W=1 kernel build warning(s):

 drivers/iio/adc/ti_am335x_adc.c: In function ‘tiadc_buffer_preenable’:
 drivers/iio/adc/ti_am335x_adc.c:297:21: warning: variable ‘read’ set but not used [-Wunused-but-set-variable]
 297 | int i, fifo1count, read;
 | ^~~~
 drivers/iio/adc/ti_am335x_adc.c: In function ‘tiadc_buffer_predisable’:
 drivers/iio/adc/ti_am335x_adc.c:346:21: warning: variable ‘read’ set but not used [-Wunused-but-set-variable]
 346 | int fifo1count, i, read;
 | ^~~~

Cc: Rachna Patil <rachna@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c
index 93ea32b..b11c8c4 100644 (file)
--- a/drivers/iio/adc/ti_am335x_adc.c
+++ b/drivers/iio/adc/ti_am335x_adc.c
@@ -294,7 +294,7 @@ static int tiadc_start_dma(struct iio_dev *indio_dev)
 static int tiadc_buffer_preenable(struct iio_dev *indio_dev)
 {
        struct tiadc_device *adc_dev = iio_priv(indio_dev);
-       int i, fifo1count, read;
+       int i, fifo1count;
 
        tiadc_writel(adc_dev, REG_IRQCLR, (IRQENB_FIFO1THRES |
                                IRQENB_FIFO1OVRRUN |
@@ -303,7 +303,7 @@ static int tiadc_buffer_preenable(struct iio_dev *indio_dev)
        /* Flush FIFO. Needed in corner cases in simultaneous tsc/adc use */
        fifo1count = tiadc_readl(adc_dev, REG_FIFO1CNT);
        for (i = 0; i < fifo1count; i++)
-               read = tiadc_readl(adc_dev, REG_FIFO1);
+               tiadc_readl(adc_dev, REG_FIFO1);
 
        return 0;
 }
@@ -343,7 +343,7 @@ static int tiadc_buffer_predisable(struct iio_dev *indio_dev)
 {
        struct tiadc_device *adc_dev = iio_priv(indio_dev);
        struct tiadc_dma *dma = &adc_dev->dma;
-       int fifo1count, i, read;
+       int fifo1count, i;
 
        tiadc_writel(adc_dev, REG_IRQCLR, (IRQENB_FIFO1THRES |
                                IRQENB_FIFO1OVRRUN | IRQENB_FIFO1UNDRFLW));
@@ -358,7 +358,7 @@ static int tiadc_buffer_predisable(struct iio_dev *indio_dev)
        /* Flush FIFO of leftover data in the time it takes to disable adc */
        fifo1count = tiadc_readl(adc_dev, REG_FIFO1CNT);
        for (i = 0; i < fifo1count; i++)
-               read = tiadc_readl(adc_dev, REG_FIFO1);
+               tiadc_readl(adc_dev, REG_FIFO1);
 
        return 0;
 }