Merge tag 'iio-fixes-for-4.11b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

Second set of IIO fixes for IIO in the 4.11 cycle.

This series consists of fixes that either came in after the merge window
had opened or are fixes for work that merged during the merge window so had
to wait for that to hit mainline.

* 104-quad-8
  - Fix an off by one error in the register address for the flag register.
* rcar-gyroadc
  - protect against possible issues in future by dealing with childmode not
    being in a valid state.  This also deals with some build warnings.
* xilinx
  - fix some error handling paths to ensure resources are released in
    reverse order of being acquired.

3 files changed, 7 insertions, 5 deletions

diff --git a/drivers/iio/adc/rcar-gyroadc.c b/drivers/iio/adc/rcar-gyroadc.c
index 0c44f72c32a8..018ed360e717 100644
--- a/drivers/iio/adc/rcar-gyroadc.c
+++ b/drivers/iio/adc/rcar-gyroadc.c
@@ -336,7 +336,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
         struct device_node *child;
         struct regulator *vref;
         unsigned int reg;
-        unsigned int adcmode, childmode;
+        unsigned int adcmode = -1, childmode;
         unsigned int sample_width;
         unsigned int num_channels;
         int ret, first = 1;
@@ -366,6 +366,8 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
                         channels = rcar_gyroadc_iio_channels_3;
                         num_channels = ARRAY_SIZE(rcar_gyroadc_iio_channels_3);
                         break;
+                default:
+                        return -EINVAL;
                 }
 
                 /*
diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
index 0a6beb3d99cb..56cf5907a5f0 100644
--- a/drivers/iio/adc/xilinx-xadc-core.c
+++ b/drivers/iio/adc/xilinx-xadc-core.c
@@ -1208,7 +1208,7 @@ static int xadc_probe(struct platform_device *pdev)
 
         ret = xadc->ops->setup(pdev, indio_dev, irq);
         if (ret)
-                goto err_free_samplerate_trigger;
+                goto err_clk_disable_unprepare;
 
         ret = request_irq(irq, xadc->ops->interrupt_handler, 0,
                         dev_name(&pdev->dev), indio_dev);
@@ -1268,6 +1268,8 @@ static int xadc_probe(struct platform_device *pdev)
 
 err_free_irq:
         free_irq(irq, indio_dev);
+err_clk_disable_unprepare:
+        clk_disable_unprepare(xadc->clk);
 err_free_samplerate_trigger:
         if (xadc->ops->flags & XADC_FLAGS_BUFFERED)
                 iio_trigger_free(xadc->samplerate_trigger);
@@ -1277,8 +1279,6 @@ err_free_convst_trigger:
 err_triggered_buffer_cleanup:
         if (xadc->ops->flags & XADC_FLAGS_BUFFERED)
                 iio_triggered_buffer_cleanup(indio_dev);
-err_clk_disable_unprepare:
-        clk_disable_unprepare(xadc->clk);
 err_device_free:
         kfree(indio_dev->channels);
 
diff --git a/drivers/iio/counter/104-quad-8.c b/drivers/iio/counter/104-quad-8.c
index a5913e97945e..f9b8fc9ae13f 100644
--- a/drivers/iio/counter/104-quad-8.c
+++ b/drivers/iio/counter/104-quad-8.c
@@ -76,7 +76,7 @@ static int quad8_read_raw(struct iio_dev *indio_dev,
                         return IIO_VAL_INT;
                 }
 
-                flags = inb(base_offset);
+                flags = inb(base_offset + 1);
                 borrow = flags & BIT(0);
                 carry = !!(flags & BIT(1));