iio: kfifo: Remove unused argument in iio_kfifo_allocate

indio_dev was unused in function body plus some small style fix - add new
lines after "if(sth) return sth" and before the last return statement.

The argument was removed also in its client.

Signed-off-by: Karol Wrona <k.wrona@samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

8 files changed, 11 insertions, 9 deletions

diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c
index d550ac7d2365..5eea299518a3 100644
--- a/drivers/iio/adc/ti_am335x_adc.c
+++ b/drivers/iio/adc/ti_am335x_adc.c
@@ -250,7 +250,7 @@ static int tiadc_iio_buffered_hardware_setup(struct iio_dev *indio_dev,
         struct iio_buffer *buffer;
         int ret;
 
-        buffer = iio_kfifo_allocate(indio_dev);
+        buffer = iio_kfifo_allocate();
         if (!buffer)
                 return -ENOMEM;
 
diff --git a/drivers/iio/industrialio-triggered-buffer.c b/drivers/iio/industrialio-triggered-buffer.c
index 61a5d0404edf..15a5341b5e7b 100644
--- a/drivers/iio/industrialio-triggered-buffer.c
+++ b/drivers/iio/industrialio-triggered-buffer.c
@@ -49,7 +49,7 @@ int iio_triggered_buffer_setup(struct iio_dev *indio_dev,
         struct iio_buffer *buffer;
         int ret;
 
-        buffer = iio_kfifo_allocate(indio_dev);
+        buffer = iio_kfifo_allocate();
         if (!buffer) {
                 ret = -ENOMEM;
                 goto error_ret;
diff --git a/drivers/iio/kfifo_buf.c b/drivers/iio/kfifo_buf.c
index b20a9cfbc8ed..7f6fad658e83 100644
--- a/drivers/iio/kfifo_buf.c
+++ b/drivers/iio/kfifo_buf.c
@@ -140,18 +140,20 @@ static const struct iio_buffer_access_funcs kfifo_access_funcs = {
         .release = &iio_kfifo_buffer_release,
 };
 
-struct iio_buffer *iio_kfifo_allocate(struct iio_dev *indio_dev)
+struct iio_buffer *iio_kfifo_allocate(void)
 {
         struct iio_kfifo *kf;
 
-        kf = kzalloc(sizeof *kf, GFP_KERNEL);
+        kf = kzalloc(sizeof(*kf), GFP_KERNEL);
         if (!kf)
                 return NULL;
+
         kf->update_needed = true;
         iio_buffer_init(&kf->buffer);
         kf->buffer.access = &kfifo_access_funcs;
         kf->buffer.length = 2;
         mutex_init(&kf->user_lock);
+
         return &kf->buffer;
 }
 EXPORT_SYMBOL(iio_kfifo_allocate);
diff --git a/drivers/staging/iio/accel/lis3l02dq_ring.c b/drivers/staging/iio/accel/lis3l02dq_ring.c
index 9efc77b0ebdd..1fd90090a633 100644
--- a/drivers/staging/iio/accel/lis3l02dq_ring.c
+++ b/drivers/staging/iio/accel/lis3l02dq_ring.c
@@ -393,7 +393,7 @@ int lis3l02dq_configure_buffer(struct iio_dev *indio_dev)
         int ret;
         struct iio_buffer *buffer;
 
-        buffer = iio_kfifo_allocate(indio_dev);
+        buffer = iio_kfifo_allocate();
         if (!buffer)
                 return -ENOMEM;
 
diff --git a/drivers/staging/iio/iio_simple_dummy_buffer.c b/drivers/staging/iio/iio_simple_dummy_buffer.c
index a2d72c102119..360a4c980722 100644
--- a/drivers/staging/iio/iio_simple_dummy_buffer.c
+++ b/drivers/staging/iio/iio_simple_dummy_buffer.c
@@ -121,7 +121,7 @@ int iio_simple_dummy_configure_buffer(struct iio_dev *indio_dev)
         struct iio_buffer *buffer;
 
         /* Allocate a buffer to use - here a kfifo */
-        buffer = iio_kfifo_allocate(indio_dev);
+        buffer = iio_kfifo_allocate();
         if (buffer == NULL) {
                 ret = -ENOMEM;
                 goto error_ret;
diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c
index c50b1380b9aa..39f60aca0838 100644
--- a/drivers/staging/iio/impedance-analyzer/ad5933.c
+++ b/drivers/staging/iio/impedance-analyzer/ad5933.c
@@ -626,7 +626,7 @@ static int ad5933_register_ring_funcs_and_init(struct iio_dev *indio_dev)
 {
         struct iio_buffer *buffer;
 
-        buffer = iio_kfifo_allocate(indio_dev);
+        buffer = iio_kfifo_allocate();
         if (!buffer)
                 return -ENOMEM;
 
diff --git a/drivers/staging/iio/meter/ade7758_ring.c b/drivers/staging/iio/meter/ade7758_ring.c
index 27c3ed6ca468..782fd9a3bc0d 100644
--- a/drivers/staging/iio/meter/ade7758_ring.c
+++ b/drivers/staging/iio/meter/ade7758_ring.c
@@ -119,7 +119,7 @@ int ade7758_configure_ring(struct iio_dev *indio_dev)
         struct iio_buffer *buffer;
         int ret = 0;
 
-        buffer = iio_kfifo_allocate(indio_dev);
+        buffer = iio_kfifo_allocate();
         if (!buffer) {
                 ret = -ENOMEM;
                 return ret;
diff --git a/include/linux/iio/kfifo_buf.h b/include/linux/iio/kfifo_buf.h
index 25eeac762e84..1a8d57a41738 100644
--- a/include/linux/iio/kfifo_buf.h
+++ b/include/linux/iio/kfifo_buf.h
@@ -5,7 +5,7 @@
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
 
-struct iio_buffer *iio_kfifo_allocate(struct iio_dev *indio_dev);
+struct iio_buffer *iio_kfifo_allocate(void);
 void iio_kfifo_free(struct iio_buffer *r);
 
 #endif