diff mbox series

[34/34] iio: inkern: fix coding style warnings

Message ID 20220610084545.547700-35-nuno.sa@analog.com (mailing list archive)
State Changes Requested
Headers show
Series make iio inkern interface firmware agnostic | expand

Commit Message

Nuno Sa June 10, 2022, 8:45 a.m. UTC 
Just cosmetics. No functional change intended...

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
---
 drivers/iio/inkern.c | 64 ++++++++++++++++++++++----------------------
 1 file changed, 32 insertions(+), 32 deletions(-)

Comments

Joe Simmons-Talbott June 10, 2022, 3:53 p.m. UTC | #1 
On Fri, Jun 10, 2022 at 10:45:45AM +0200, Nuno Sá wrote:
> Just cosmetics. No functional change intended...
> 
> Signed-off-by: Nuno Sá <nuno.sa@analog.com>
> ---
>  drivers/iio/inkern.c | 64 ++++++++++++++++++++++----------------------
>  1 file changed, 32 insertions(+), 32 deletions(-)
> 
> diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
> index 7eb536560ded..526519cefcb9 100644
> --- a/drivers/iio/inkern.c
> +++ b/drivers/iio/inkern.c
> @@ -45,13 +45,13 @@ int iio_map_array_register(struct iio_dev *indio_dev, struct iio_map *maps)
>  	int i = 0, ret = 0;
>  	struct iio_map_internal *mapi;
>  
> -	if (maps == NULL)
> +	if (!maps)
>  		return 0;
>  
>  	mutex_lock(&iio_map_list_lock);
> -	while (maps[i].consumer_dev_name != NULL) {
> +	while (!maps[i].consumer_dev_name) {

Shouldn't this be?:
while (maps[i].consumer_dev_name) {

Thanks,
Joe
>  		mapi = kzalloc(sizeof(*mapi), GFP_KERNEL);
> -		if (mapi == NULL) {
> +		if (!mapi) {
>  			ret = -ENOMEM;
>  			goto error_ret;
>  		}
> @@ -69,7 +69,6 @@ int iio_map_array_register(struct iio_dev *indio_dev, struct iio_map *maps)
>  }
>  EXPORT_SYMBOL_GPL(iio_map_array_register);
>  
> -
>  /*
>   * Remove all map entries associated with the given iio device
>   */
> @@ -163,7 +162,7 @@ static int __fwnode_iio_channel_get(struct iio_channel *channel,
>  
>  	idev = bus_find_device(&iio_bus_type, NULL, iiospec.fwnode,
>  			       iio_dev_node_match);
> -	if (idev == NULL) {
> +	if (!idev) {
>  		fwnode_handle_put(iiospec.fwnode);
>  		return -EPROBE_DEFER;
>  	}
> @@ -196,7 +195,7 @@ static struct iio_channel *fwnode_iio_channel_get(struct fwnode_handle *fwnode,
>  		return ERR_PTR(-EINVAL);
>  
>  	channel = kzalloc(sizeof(*channel), GFP_KERNEL);
> -	if (channel == NULL)
> +	if (!channel)
>  		return ERR_PTR(-ENOMEM);
>  
>  	err = __fwnode_iio_channel_get(channel, fwnode, index);
> @@ -293,7 +292,7 @@ static struct iio_channel *fwnode_iio_channel_get_all(struct device *dev)
>  
>  	/* NULL terminated array to save passing size */
>  	chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL);
> -	if (chans == NULL)
> +	if (!chans)
>  		return ERR_PTR(-ENOMEM);
>  
>  	/* Search for FW matches */
> @@ -318,7 +317,7 @@ static struct iio_channel *iio_channel_get_sys(const char *name,
>  	struct iio_channel *channel;
>  	int err;
>  
> -	if (name == NULL && channel_name == NULL)
> +	if (!name && !channel_name)
>  		return ERR_PTR(-ENODEV);
>  
>  	/* first find matching entry the channel map */
> @@ -333,11 +332,11 @@ static struct iio_channel *iio_channel_get_sys(const char *name,
>  		break;
>  	}
>  	mutex_unlock(&iio_map_list_lock);
> -	if (c == NULL)
> +	if (!c)
>  		return ERR_PTR(-ENODEV);
>  
>  	channel = kzalloc(sizeof(*channel), GFP_KERNEL);
> -	if (channel == NULL) {
> +	if (!channel) {
>  		err = -ENOMEM;
>  		goto error_no_mem;
>  	}
> @@ -349,7 +348,7 @@ static struct iio_channel *iio_channel_get_sys(const char *name,
>  			iio_chan_spec_from_name(channel->indio_dev,
>  						c->map->adc_channel_label);
>  
> -		if (channel->channel == NULL) {
> +		if (!channel->channel) {
>  			err = -EINVAL;
>  			goto error_no_chan;
>  		}
> @@ -441,7 +440,7 @@ struct iio_channel *iio_channel_get_all(struct device *dev)
>  	int mapind = 0;
>  	int i, ret;
>  
> -	if (dev == NULL)
> +	if (!dev)
>  		return ERR_PTR(-EINVAL);
>  
>  	chans = fwnode_iio_channel_get_all(dev);
> @@ -465,7 +464,7 @@ struct iio_channel *iio_channel_get_all(struct device *dev)
>  
>  	/* NULL terminated array to save passing size */
>  	chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL);
> -	if (chans == NULL) {
> +	if (!chans) {
>  		ret = -ENOMEM;
>  		goto error_ret;
>  	}
> @@ -479,7 +478,7 @@ struct iio_channel *iio_channel_get_all(struct device *dev)
>  		chans[mapind].channel =
>  			iio_chan_spec_from_name(chans[mapind].indio_dev,
>  						c->map->adc_channel_label);
> -		if (chans[mapind].channel == NULL) {
> +		if (!chans[mapind].channel) {
>  			ret = -EINVAL;
>  			goto error_free_chans;
>  		}
> @@ -541,14 +540,14 @@ struct iio_channel *devm_iio_channel_get_all(struct device *dev)
>  EXPORT_SYMBOL_GPL(devm_iio_channel_get_all);
>  
>  static int iio_channel_read(struct iio_channel *chan, int *val, int *val2,
> -	enum iio_chan_info_enum info)
> +			    enum iio_chan_info_enum info)
>  {
>  	int unused;
>  	int vals[INDIO_MAX_RAW_ELEMENTS];
>  	int ret;
>  	int val_len = 2;
>  
> -	if (val2 == NULL)
> +	if (!val2)
>  		val2 = &unused;
>  
>  	if (!iio_channel_has_info(chan->channel, info))
> @@ -560,9 +559,10 @@ static int iio_channel_read(struct iio_channel *chan, int *val, int *val2,
>  					vals, &val_len, info);
>  		*val = vals[0];
>  		*val2 = vals[1];
> -	} else
> +	} else {
>  		ret = chan->indio_dev->info->read_raw(chan->indio_dev,
>  					chan->channel, val, val2, info);
> +	}
>  
>  	return ret;
>  }
> @@ -573,7 +573,7 @@ int iio_read_channel_raw(struct iio_channel *chan, int *val)
>  	int ret;
>  
>  	mutex_lock(&iio_dev_opaque->info_exist_lock);
> -	if (chan->indio_dev->info == NULL) {
> +	if (!chan->indio_dev->info) {
>  		ret = -ENODEV;
>  		goto err_unlock;
>  	}
> @@ -592,7 +592,7 @@ int iio_read_channel_average_raw(struct iio_channel *chan, int *val)
>  	int ret;
>  
>  	mutex_lock(&iio_dev_opaque->info_exist_lock);
> -	if (chan->indio_dev->info == NULL) {
> +	if (!chan->indio_dev->info) {
>  		ret = -ENODEV;
>  		goto err_unlock;
>  	}
> @@ -606,7 +606,8 @@ int iio_read_channel_average_raw(struct iio_channel *chan, int *val)
>  EXPORT_SYMBOL_GPL(iio_read_channel_average_raw);
>  
>  static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan,
> -	int raw, int *processed, unsigned int scale)
> +						 int raw, int *processed,
> +						 unsigned int scale)
>  {
>  	int scale_type, scale_val, scale_val2;
>  	int offset_type, offset_val, offset_val2;
> @@ -639,7 +640,7 @@ static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan,
>  	}
>  
>  	scale_type = iio_channel_read(chan, &scale_val, &scale_val2,
> -					IIO_CHAN_INFO_SCALE);
> +				      IIO_CHAN_INFO_SCALE);
>  	if (scale_type < 0) {
>  		/*
>  		 * If no channel scaling is available apply consumer scale to
> @@ -684,19 +685,19 @@ static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan,
>  }
>  
>  int iio_convert_raw_to_processed(struct iio_channel *chan, int raw,
> -	int *processed, unsigned int scale)
> +				 int *processed, unsigned int scale)
>  {
>  	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
>  	int ret;
>  
>  	mutex_lock(&iio_dev_opaque->info_exist_lock);
> -	if (chan->indio_dev->info == NULL) {
> +	if (!chan->indio_dev->info) {
>  		ret = -ENODEV;
>  		goto err_unlock;
>  	}
>  
>  	ret = iio_convert_raw_to_processed_unlocked(chan, raw, processed,
> -							scale);
> +						    scale);
>  err_unlock:
>  	mutex_unlock(&iio_dev_opaque->info_exist_lock);
>  
> @@ -711,7 +712,7 @@ int iio_read_channel_attribute(struct iio_channel *chan, int *val, int *val2,
>  	int ret;
>  
>  	mutex_lock(&iio_dev_opaque->info_exist_lock);
> -	if (chan->indio_dev->info == NULL) {
> +	if (!chan->indio_dev->info) {
>  		ret = -ENODEV;
>  		goto err_unlock;
>  	}
> @@ -737,7 +738,7 @@ int iio_read_channel_processed_scale(struct iio_channel *chan, int *val,
>  	int ret;
>  
>  	mutex_lock(&iio_dev_opaque->info_exist_lock);
> -	if (chan->indio_dev->info == NULL) {
> +	if (!chan->indio_dev->info) {
>  		ret = -ENODEV;
>  		goto err_unlock;
>  	}
> @@ -815,7 +816,7 @@ int iio_read_avail_channel_raw(struct iio_channel *chan,
>  	int type;
>  
>  	ret = iio_read_avail_channel_attribute(chan, vals, &type, length,
> -					 IIO_CHAN_INFO_RAW);
> +					       IIO_CHAN_INFO_RAW);
>  
>  	if (ret >= 0 && type != IIO_VAL_INT)
>  		/* raw values are assumed to be IIO_VAL_INT */
> @@ -899,7 +900,7 @@ int iio_get_channel_type(struct iio_channel *chan, enum iio_chan_type *type)
>  	/* Need to verify underlying driver has not gone away */
>  
>  	mutex_lock(&iio_dev_opaque->info_exist_lock);
> -	if (chan->indio_dev->info == NULL) {
> +	if (!chan->indio_dev->info) {
>  		ret = -ENODEV;
>  		goto err_unlock;
>  	}
> @@ -926,7 +927,7 @@ int iio_write_channel_attribute(struct iio_channel *chan, int val, int val2,
>  	int ret;
>  
>  	mutex_lock(&iio_dev_opaque->info_exist_lock);
> -	if (chan->indio_dev->info == NULL) {
> +	if (!chan->indio_dev->info) {
>  		ret = -ENODEV;
>  		goto err_unlock;
>  	}
> @@ -960,9 +961,8 @@ unsigned int iio_get_channel_ext_info_count(struct iio_channel *chan)
>  }
>  EXPORT_SYMBOL_GPL(iio_get_channel_ext_info_count);
>  
> -static const struct iio_chan_spec_ext_info *iio_lookup_ext_info(
> -						const struct iio_channel *chan,
> -						const char *attr)
> +static const struct iio_chan_spec_ext_info *
> +iio_lookup_ext_info(const struct iio_channel *chan, const char *attr)
>  {
>  	const struct iio_chan_spec_ext_info *ext_info;
>  
> -- 
> 2.36.1
>
Nuno Sá June 10, 2022, 7:51 p.m. UTC | #2 
On Fri, 2022-06-10 at 11:53 -0400, Joe Simmons-Talbott wrote:
> On Fri, Jun 10, 2022 at 10:45:45AM +0200, Nuno Sá wrote:
> > Just cosmetics. No functional change intended...
> > 
> > Signed-off-by: Nuno Sá <nuno.sa@analog.com>
> > ---
> >  drivers/iio/inkern.c | 64 ++++++++++++++++++++++------------------
> > ----
> >  1 file changed, 32 insertions(+), 32 deletions(-)
> > 
> > diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
> > index 7eb536560ded..526519cefcb9 100644
> > --- a/drivers/iio/inkern.c
> > +++ b/drivers/iio/inkern.c
> > @@ -45,13 +45,13 @@ int iio_map_array_register(struct iio_dev
> > *indio_dev, struct iio_map *maps)
> >         int i = 0, ret = 0;
> >         struct iio_map_internal *mapi;
> >  
> > -       if (maps == NULL)
> > +       if (!maps)
> >                 return 0;
> >  
> >         mutex_lock(&iio_map_list_lock);
> > -       while (maps[i].consumer_dev_name != NULL) {
> > +       while (!maps[i].consumer_dev_name) {
> 
> Shouldn't this be?:
> while (maps[i].consumer_dev_name) {
> 

Ups... Nice catch! I was probably in bot mode already.

- Nuno Sá
Geert Uytterhoeven June 12, 2022, 5:39 p.m. UTC | #3 
Hi Nuno,

On Fri, Jun 10, 2022 at 9:52 PM Nuno Sá <noname.nuno@gmail.com> wrote:
> On Fri, 2022-06-10 at 11:53 -0400, Joe Simmons-Talbott wrote:
> > On Fri, Jun 10, 2022 at 10:45:45AM +0200, Nuno Sá wrote:
> > > Just cosmetics. No functional change intended...
> > >
> > > Signed-off-by: Nuno Sá <nuno.sa@analog.com>

> > > --- a/drivers/iio/inkern.c
> > > +++ b/drivers/iio/inkern.c
> > > @@ -45,13 +45,13 @@ int iio_map_array_register(struct iio_dev
> > > *indio_dev, struct iio_map *maps)
> > >         int i = 0, ret = 0;
> > >         struct iio_map_internal *mapi;
> > >
> > > -       if (maps == NULL)
> > > +       if (!maps)
> > >                 return 0;
> > >
> > >         mutex_lock(&iio_map_list_lock);
> > > -       while (maps[i].consumer_dev_name != NULL) {
> > > +       while (!maps[i].consumer_dev_name) {
> >
> > Shouldn't this be?:
> > while (maps[i].consumer_dev_name) {
>
> Ups... Nice catch! I was probably in bot mode already.

When making a change with no functional change intended, it is always
a good idea to compare the generated assembler before/after.  I.e.

    make drivers/iio/inkern.s
    mv drivers/iio/inkern.s drivers/iio/inkern.s.orig
    [make your change]
    make drivers/iio/inkern.s
    diff -u drivers/iio/inkern.s{.orig,}

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
Nuno Sá June 13, 2022, 7:23 a.m. UTC | #4 
On Sun, 2022-06-12 at 19:39 +0200, Geert Uytterhoeven wrote:
> Hi Nuno,
> 
> On Fri, Jun 10, 2022 at 9:52 PM Nuno Sá <noname.nuno@gmail.com>
> wrote:
> > On Fri, 2022-06-10 at 11:53 -0400, Joe Simmons-Talbott wrote:
> > > On Fri, Jun 10, 2022 at 10:45:45AM +0200, Nuno Sá wrote:
> > > > Just cosmetics. No functional change intended...
> > > > 
> > > > Signed-off-by: Nuno Sá <nuno.sa@analog.com>
> 
> > > > --- a/drivers/iio/inkern.c
> > > > +++ b/drivers/iio/inkern.c
> > > > @@ -45,13 +45,13 @@ int iio_map_array_register(struct iio_dev
> > > > *indio_dev, struct iio_map *maps)
> > > >         int i = 0, ret = 0;
> > > >         struct iio_map_internal *mapi;
> > > > 
> > > > -       if (maps == NULL)
> > > > +       if (!maps)
> > > >                 return 0;
> > > > 
> > > >         mutex_lock(&iio_map_list_lock);
> > > > -       while (maps[i].consumer_dev_name != NULL) {
> > > > +       while (!maps[i].consumer_dev_name) {
> > > 
> > > Shouldn't this be?:
> > > while (maps[i].consumer_dev_name) {
> > 
> > Ups... Nice catch! I was probably in bot mode already.
> 
> When making a change with no functional change intended, it is always
> a good idea to compare the generated assembler before/after.  I.e.
> 
>     make drivers/iio/inkern.s
>     mv drivers/iio/inkern.s drivers/iio/inkern.s.orig
>     [make your change]
>     make drivers/iio/inkern.s
>     diff -u drivers/iio/inkern.s{.orig,}
> 

Ah thx... That's indeed a good idea!

- Nuno Sá
diff mbox series

Patch

diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index 7eb536560ded..526519cefcb9 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -45,13 +45,13 @@  int iio_map_array_register(struct iio_dev *indio_dev, struct iio_map *maps)
 	int i = 0, ret = 0;
 	struct iio_map_internal *mapi;
 
-	if (maps == NULL)
+	if (!maps)
 		return 0;
 
 	mutex_lock(&iio_map_list_lock);
-	while (maps[i].consumer_dev_name != NULL) {
+	while (!maps[i].consumer_dev_name) {
 		mapi = kzalloc(sizeof(*mapi), GFP_KERNEL);
-		if (mapi == NULL) {
+		if (!mapi) {
 			ret = -ENOMEM;
 			goto error_ret;
 		}
@@ -69,7 +69,6 @@  int iio_map_array_register(struct iio_dev *indio_dev, struct iio_map *maps)
 }
 EXPORT_SYMBOL_GPL(iio_map_array_register);
 
-
 /*
  * Remove all map entries associated with the given iio device
  */
@@ -163,7 +162,7 @@  static int __fwnode_iio_channel_get(struct iio_channel *channel,
 
 	idev = bus_find_device(&iio_bus_type, NULL, iiospec.fwnode,
 			       iio_dev_node_match);
-	if (idev == NULL) {
+	if (!idev) {
 		fwnode_handle_put(iiospec.fwnode);
 		return -EPROBE_DEFER;
 	}
@@ -196,7 +195,7 @@  static struct iio_channel *fwnode_iio_channel_get(struct fwnode_handle *fwnode,
 		return ERR_PTR(-EINVAL);
 
 	channel = kzalloc(sizeof(*channel), GFP_KERNEL);
-	if (channel == NULL)
+	if (!channel)
 		return ERR_PTR(-ENOMEM);
 
 	err = __fwnode_iio_channel_get(channel, fwnode, index);
@@ -293,7 +292,7 @@  static struct iio_channel *fwnode_iio_channel_get_all(struct device *dev)
 
 	/* NULL terminated array to save passing size */
 	chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL);
-	if (chans == NULL)
+	if (!chans)
 		return ERR_PTR(-ENOMEM);
 
 	/* Search for FW matches */
@@ -318,7 +317,7 @@  static struct iio_channel *iio_channel_get_sys(const char *name,
 	struct iio_channel *channel;
 	int err;
 
-	if (name == NULL && channel_name == NULL)
+	if (!name && !channel_name)
 		return ERR_PTR(-ENODEV);
 
 	/* first find matching entry the channel map */
@@ -333,11 +332,11 @@  static struct iio_channel *iio_channel_get_sys(const char *name,
 		break;
 	}
 	mutex_unlock(&iio_map_list_lock);
-	if (c == NULL)
+	if (!c)
 		return ERR_PTR(-ENODEV);
 
 	channel = kzalloc(sizeof(*channel), GFP_KERNEL);
-	if (channel == NULL) {
+	if (!channel) {
 		err = -ENOMEM;
 		goto error_no_mem;
 	}
@@ -349,7 +348,7 @@  static struct iio_channel *iio_channel_get_sys(const char *name,
 			iio_chan_spec_from_name(channel->indio_dev,
 						c->map->adc_channel_label);
 
-		if (channel->channel == NULL) {
+		if (!channel->channel) {
 			err = -EINVAL;
 			goto error_no_chan;
 		}
@@ -441,7 +440,7 @@  struct iio_channel *iio_channel_get_all(struct device *dev)
 	int mapind = 0;
 	int i, ret;
 
-	if (dev == NULL)
+	if (!dev)
 		return ERR_PTR(-EINVAL);
 
 	chans = fwnode_iio_channel_get_all(dev);
@@ -465,7 +464,7 @@  struct iio_channel *iio_channel_get_all(struct device *dev)
 
 	/* NULL terminated array to save passing size */
 	chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL);
-	if (chans == NULL) {
+	if (!chans) {
 		ret = -ENOMEM;
 		goto error_ret;
 	}
@@ -479,7 +478,7 @@  struct iio_channel *iio_channel_get_all(struct device *dev)
 		chans[mapind].channel =
 			iio_chan_spec_from_name(chans[mapind].indio_dev,
 						c->map->adc_channel_label);
-		if (chans[mapind].channel == NULL) {
+		if (!chans[mapind].channel) {
 			ret = -EINVAL;
 			goto error_free_chans;
 		}
@@ -541,14 +540,14 @@  struct iio_channel *devm_iio_channel_get_all(struct device *dev)
 EXPORT_SYMBOL_GPL(devm_iio_channel_get_all);
 
 static int iio_channel_read(struct iio_channel *chan, int *val, int *val2,
-	enum iio_chan_info_enum info)
+			    enum iio_chan_info_enum info)
 {
 	int unused;
 	int vals[INDIO_MAX_RAW_ELEMENTS];
 	int ret;
 	int val_len = 2;
 
-	if (val2 == NULL)
+	if (!val2)
 		val2 = &unused;
 
 	if (!iio_channel_has_info(chan->channel, info))
@@ -560,9 +559,10 @@  static int iio_channel_read(struct iio_channel *chan, int *val, int *val2,
 					vals, &val_len, info);
 		*val = vals[0];
 		*val2 = vals[1];
-	} else
+	} else {
 		ret = chan->indio_dev->info->read_raw(chan->indio_dev,
 					chan->channel, val, val2, info);
+	}
 
 	return ret;
 }
@@ -573,7 +573,7 @@  int iio_read_channel_raw(struct iio_channel *chan, int *val)
 	int ret;
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
@@ -592,7 +592,7 @@  int iio_read_channel_average_raw(struct iio_channel *chan, int *val)
 	int ret;
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
@@ -606,7 +606,8 @@  int iio_read_channel_average_raw(struct iio_channel *chan, int *val)
 EXPORT_SYMBOL_GPL(iio_read_channel_average_raw);
 
 static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan,
-	int raw, int *processed, unsigned int scale)
+						 int raw, int *processed,
+						 unsigned int scale)
 {
 	int scale_type, scale_val, scale_val2;
 	int offset_type, offset_val, offset_val2;
@@ -639,7 +640,7 @@  static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan,
 	}
 
 	scale_type = iio_channel_read(chan, &scale_val, &scale_val2,
-					IIO_CHAN_INFO_SCALE);
+				      IIO_CHAN_INFO_SCALE);
 	if (scale_type < 0) {
 		/*
 		 * If no channel scaling is available apply consumer scale to
@@ -684,19 +685,19 @@  static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan,
 }
 
 int iio_convert_raw_to_processed(struct iio_channel *chan, int raw,
-	int *processed, unsigned int scale)
+				 int *processed, unsigned int scale)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
 	int ret;
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
 
 	ret = iio_convert_raw_to_processed_unlocked(chan, raw, processed,
-							scale);
+						    scale);
 err_unlock:
 	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
@@ -711,7 +712,7 @@  int iio_read_channel_attribute(struct iio_channel *chan, int *val, int *val2,
 	int ret;
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
@@ -737,7 +738,7 @@  int iio_read_channel_processed_scale(struct iio_channel *chan, int *val,
 	int ret;
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
@@ -815,7 +816,7 @@  int iio_read_avail_channel_raw(struct iio_channel *chan,
 	int type;
 
 	ret = iio_read_avail_channel_attribute(chan, vals, &type, length,
-					 IIO_CHAN_INFO_RAW);
+					       IIO_CHAN_INFO_RAW);
 
 	if (ret >= 0 && type != IIO_VAL_INT)
 		/* raw values are assumed to be IIO_VAL_INT */
@@ -899,7 +900,7 @@  int iio_get_channel_type(struct iio_channel *chan, enum iio_chan_type *type)
 	/* Need to verify underlying driver has not gone away */
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
@@ -926,7 +927,7 @@  int iio_write_channel_attribute(struct iio_channel *chan, int val, int val2,
 	int ret;
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
@@ -960,9 +961,8 @@  unsigned int iio_get_channel_ext_info_count(struct iio_channel *chan)
 }
 EXPORT_SYMBOL_GPL(iio_get_channel_ext_info_count);
 
-static const struct iio_chan_spec_ext_info *iio_lookup_ext_info(
-						const struct iio_channel *chan,
-						const char *attr)
+static const struct iio_chan_spec_ext_info *
+iio_lookup_ext_info(const struct iio_channel *chan, const char *attr)
 {
 	const struct iio_chan_spec_ext_info *ext_info;