diff mbox series

[v2,2/7] remoteproc: Split firmware name allocation from rproc_alloc()

Message ID 20200415204858.2448-3-mathieu.poirier@linaro.org (mailing list archive)
State Superseded
Headers show
Series remoteproc: Refactor function rproc_alloc() | expand

Commit Message

Mathieu Poirier April 15, 2020, 8:48 p.m. UTC 
Make the firmware name allocation a function on its own in an
effort to cleanup function rproc_alloc().

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
 drivers/remoteproc/remoteproc_core.c | 66 ++++++++++++++++------------
 1 file changed, 39 insertions(+), 27 deletions(-)

Comments

Alex Elder April 15, 2020, 9:28 p.m. UTC | #1 
On 4/15/20 3:48 PM, Mathieu Poirier wrote:
> Make the firmware name allocation a function on its own in an
> effort to cleanup function rproc_alloc().
> 
> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

Looks good.

Reviewed-by: Alex Elder <elder@linaro.org>

> ---
>  drivers/remoteproc/remoteproc_core.c | 66 ++++++++++++++++------------
>  1 file changed, 39 insertions(+), 27 deletions(-)
> 
> diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
> index 80056513ae71..4dee63f319ba 100644
> --- a/drivers/remoteproc/remoteproc_core.c
> +++ b/drivers/remoteproc/remoteproc_core.c
> @@ -1979,6 +1979,33 @@ static const struct device_type rproc_type = {
>  	.release	= rproc_type_release,
>  };
>  
> +static int rproc_alloc_firmware(struct rproc *rproc,
> +				const char *name, const char *firmware)
> +{
> +	char *p, *template = "rproc-%s-fw";
> +	int name_len;
> +
> +	if (!firmware) {
> +		/*
> +		 * If the caller didn't pass in a firmware name then
> +		 * construct a default name.
> +		 */
> +		name_len = strlen(name) + strlen(template) - 2 + 1;
> +		p = kmalloc(name_len, GFP_KERNEL);
> +		if (!p)
> +			return -ENOMEM;
> +		snprintf(p, name_len, template, name);
> +	} else {
> +		p = kstrdup(firmware, GFP_KERNEL);
> +		if (!p)
> +			return -ENOMEM;
> +	}
> +
> +	rproc->firmware = p;
> +
> +	return 0;
> +}
> +
>  /**
>   * rproc_alloc() - allocate a remote processor handle
>   * @dev: the underlying device
> @@ -2007,42 +2034,21 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
>  			  const char *firmware, int len)
>  {
>  	struct rproc *rproc;
> -	char *p, *template = "rproc-%s-fw";
> -	int name_len;
>  
>  	if (!dev || !name || !ops)
>  		return NULL;
>  
> -	if (!firmware) {
> -		/*
> -		 * If the caller didn't pass in a firmware name then
> -		 * construct a default name.
> -		 */
> -		name_len = strlen(name) + strlen(template) - 2 + 1;
> -		p = kmalloc(name_len, GFP_KERNEL);
> -		if (!p)
> -			return NULL;
> -		snprintf(p, name_len, template, name);
> -	} else {
> -		p = kstrdup(firmware, GFP_KERNEL);
> -		if (!p)
> -			return NULL;
> -	}
> -
>  	rproc = kzalloc(sizeof(struct rproc) + len, GFP_KERNEL);
> -	if (!rproc) {
> -		kfree(p);
> +	if (!rproc)
>  		return NULL;
> -	}
> +
> +	if (rproc_alloc_firmware(rproc, name, firmware))
> +		goto free_rproc;
>  
>  	rproc->ops = kmemdup(ops, sizeof(*ops), GFP_KERNEL);
> -	if (!rproc->ops) {
> -		kfree(p);
> -		kfree(rproc);
> -		return NULL;
> -	}
> +	if (!rproc->ops)
> +		goto free_firmware;
>  
> -	rproc->firmware = p;
>  	rproc->name = name;
>  	rproc->priv = &rproc[1];
>  	rproc->auto_boot = true;
> @@ -2091,6 +2097,12 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
>  	rproc->state = RPROC_OFFLINE;
>  
>  	return rproc;
> +
> +free_firmware:
> +	kfree(rproc->firmware);
> +free_rproc:
> +	kfree(rproc);
> +	return NULL;
>  }
>  EXPORT_SYMBOL(rproc_alloc);
>  
>
Bjorn Andersson April 20, 2020, 5:09 a.m. UTC | #2 
On Wed 15 Apr 13:48 PDT 2020, Mathieu Poirier wrote:

> Make the firmware name allocation a function on its own in an
> effort to cleanup function rproc_alloc().
> 
> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Regards,
Bjorn

> ---
>  drivers/remoteproc/remoteproc_core.c | 66 ++++++++++++++++------------
>  1 file changed, 39 insertions(+), 27 deletions(-)
> 
> diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
> index 80056513ae71..4dee63f319ba 100644
> --- a/drivers/remoteproc/remoteproc_core.c
> +++ b/drivers/remoteproc/remoteproc_core.c
> @@ -1979,6 +1979,33 @@ static const struct device_type rproc_type = {
>  	.release	= rproc_type_release,
>  };
>  
> +static int rproc_alloc_firmware(struct rproc *rproc,
> +				const char *name, const char *firmware)
> +{
> +	char *p, *template = "rproc-%s-fw";
> +	int name_len;
> +
> +	if (!firmware) {
> +		/*
> +		 * If the caller didn't pass in a firmware name then
> +		 * construct a default name.
> +		 */
> +		name_len = strlen(name) + strlen(template) - 2 + 1;
> +		p = kmalloc(name_len, GFP_KERNEL);
> +		if (!p)
> +			return -ENOMEM;
> +		snprintf(p, name_len, template, name);
> +	} else {
> +		p = kstrdup(firmware, GFP_KERNEL);
> +		if (!p)
> +			return -ENOMEM;
> +	}
> +
> +	rproc->firmware = p;
> +
> +	return 0;
> +}
> +
>  /**
>   * rproc_alloc() - allocate a remote processor handle
>   * @dev: the underlying device
> @@ -2007,42 +2034,21 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
>  			  const char *firmware, int len)
>  {
>  	struct rproc *rproc;
> -	char *p, *template = "rproc-%s-fw";
> -	int name_len;
>  
>  	if (!dev || !name || !ops)
>  		return NULL;
>  
> -	if (!firmware) {
> -		/*
> -		 * If the caller didn't pass in a firmware name then
> -		 * construct a default name.
> -		 */
> -		name_len = strlen(name) + strlen(template) - 2 + 1;
> -		p = kmalloc(name_len, GFP_KERNEL);
> -		if (!p)
> -			return NULL;
> -		snprintf(p, name_len, template, name);
> -	} else {
> -		p = kstrdup(firmware, GFP_KERNEL);
> -		if (!p)
> -			return NULL;
> -	}
> -
>  	rproc = kzalloc(sizeof(struct rproc) + len, GFP_KERNEL);
> -	if (!rproc) {
> -		kfree(p);
> +	if (!rproc)
>  		return NULL;
> -	}
> +
> +	if (rproc_alloc_firmware(rproc, name, firmware))
> +		goto free_rproc;
>  
>  	rproc->ops = kmemdup(ops, sizeof(*ops), GFP_KERNEL);
> -	if (!rproc->ops) {
> -		kfree(p);
> -		kfree(rproc);
> -		return NULL;
> -	}
> +	if (!rproc->ops)
> +		goto free_firmware;
>  
> -	rproc->firmware = p;
>  	rproc->name = name;
>  	rproc->priv = &rproc[1];
>  	rproc->auto_boot = true;
> @@ -2091,6 +2097,12 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
>  	rproc->state = RPROC_OFFLINE;
>  
>  	return rproc;
> +
> +free_firmware:
> +	kfree(rproc->firmware);
> +free_rproc:
> +	kfree(rproc);
> +	return NULL;
>  }
>  EXPORT_SYMBOL(rproc_alloc);
>  
> -- 
> 2.20.1
>
Arnaud POULIQUEN April 20, 2020, 9:24 a.m. UTC | #3 
Hi Mathieu,

On 4/15/20 10:48 PM, Mathieu Poirier wrote:
> Make the firmware name allocation a function on its own in an
> effort to cleanup function rproc_alloc().
> 
> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
> ---
>  drivers/remoteproc/remoteproc_core.c | 66 ++++++++++++++++------------
>  1 file changed, 39 insertions(+), 27 deletions(-)
> 
> diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
> index 80056513ae71..4dee63f319ba 100644
> --- a/drivers/remoteproc/remoteproc_core.c
> +++ b/drivers/remoteproc/remoteproc_core.c
> @@ -1979,6 +1979,33 @@ static const struct device_type rproc_type = {
>  	.release	= rproc_type_release,
>  };
>  
> +static int rproc_alloc_firmware(struct rproc *rproc,
> +				const char *name, const char *firmware)

nitpicking: here you do not allocate memory for the firmware but for its name
The name of the function seems to me quite confusing...

Else LGTM for the series

Thanks,

Arnaud

> +{
> +	char *p, *template = "rproc-%s-fw";
> +	int name_len;
> +
> +	if (!firmware) {
> +		/*
> +		 * If the caller didn't pass in a firmware name then
> +		 * construct a default name.
> +		 */
> +		name_len = strlen(name) + strlen(template) - 2 + 1;
> +		p = kmalloc(name_len, GFP_KERNEL);
> +		if (!p)
> +			return -ENOMEM;
> +		snprintf(p, name_len, template, name);
> +	} else {
> +		p = kstrdup(firmware, GFP_KERNEL);
> +		if (!p)
> +			return -ENOMEM;
> +	}
> +
> +	rproc->firmware = p;
> +
> +	return 0;
> +}
> +
>  /**
>   * rproc_alloc() - allocate a remote processor handle
>   * @dev: the underlying device
> @@ -2007,42 +2034,21 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
>  			  const char *firmware, int len)
>  {
>  	struct rproc *rproc;
> -	char *p, *template = "rproc-%s-fw";
> -	int name_len;
>  
>  	if (!dev || !name || !ops)
>  		return NULL;
>  
> -	if (!firmware) {
> -		/*
> -		 * If the caller didn't pass in a firmware name then
> -		 * construct a default name.
> -		 */
> -		name_len = strlen(name) + strlen(template) - 2 + 1;
> -		p = kmalloc(name_len, GFP_KERNEL);
> -		if (!p)
> -			return NULL;
> -		snprintf(p, name_len, template, name);
> -	} else {
> -		p = kstrdup(firmware, GFP_KERNEL);
> -		if (!p)
> -			return NULL;
> -	}
> -
>  	rproc = kzalloc(sizeof(struct rproc) + len, GFP_KERNEL);
> -	if (!rproc) {
> -		kfree(p);
> +	if (!rproc)
>  		return NULL;
> -	}
> +
> +	if (rproc_alloc_firmware(rproc, name, firmware))
> +		goto free_rproc;
>  
>  	rproc->ops = kmemdup(ops, sizeof(*ops), GFP_KERNEL);
> -	if (!rproc->ops) {
> -		kfree(p);
> -		kfree(rproc);
> -		return NULL;
> -	}
> +	if (!rproc->ops)
> +		goto free_firmware;
>  
> -	rproc->firmware = p;
>  	rproc->name = name;
>  	rproc->priv = &rproc[1];
>  	rproc->auto_boot = true;
> @@ -2091,6 +2097,12 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
>  	rproc->state = RPROC_OFFLINE;
>  
>  	return rproc;
> +
> +free_firmware:
> +	kfree(rproc->firmware);
> +free_rproc:
> +	kfree(rproc);
> +	return NULL;
>  }
>  EXPORT_SYMBOL(rproc_alloc);
>  
>
Mathieu Poirier April 20, 2020, 9:29 p.m. UTC | #4 
Hey,

On Mon, 20 Apr 2020 at 03:24, Arnaud POULIQUEN <arnaud.pouliquen@st.com> wrote:
>
> Hi Mathieu,
>
> On 4/15/20 10:48 PM, Mathieu Poirier wrote:
> > Make the firmware name allocation a function on its own in an
> > effort to cleanup function rproc_alloc().
> >
> > Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
> > ---
> >  drivers/remoteproc/remoteproc_core.c | 66 ++++++++++++++++------------
> >  1 file changed, 39 insertions(+), 27 deletions(-)
> >
> > diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
> > index 80056513ae71..4dee63f319ba 100644
> > --- a/drivers/remoteproc/remoteproc_core.c
> > +++ b/drivers/remoteproc/remoteproc_core.c
> > @@ -1979,6 +1979,33 @@ static const struct device_type rproc_type = {
> >       .release        = rproc_type_release,
> >  };
> >
> > +static int rproc_alloc_firmware(struct rproc *rproc,
> > +                             const char *name, const char *firmware)
>
> nitpicking: here you do not allocate memory for the firmware but for its name
> The name of the function seems to me quite confusing...

Ok, I'll see if I can find something better.

>
> Else LGTM for the series

V3 will be out shortly and it will be fairly different from this one.

>
> Thanks,
>
> Arnaud
>
> > +{
> > +     char *p, *template = "rproc-%s-fw";
> > +     int name_len;
> > +
> > +     if (!firmware) {
> > +             /*
> > +              * If the caller didn't pass in a firmware name then
> > +              * construct a default name.
> > +              */
> > +             name_len = strlen(name) + strlen(template) - 2 + 1;
> > +             p = kmalloc(name_len, GFP_KERNEL);
> > +             if (!p)
> > +                     return -ENOMEM;
> > +             snprintf(p, name_len, template, name);
> > +     } else {
> > +             p = kstrdup(firmware, GFP_KERNEL);
> > +             if (!p)
> > +                     return -ENOMEM;
> > +     }
> > +
> > +     rproc->firmware = p;
> > +
> > +     return 0;
> > +}
> > +
> >  /**
> >   * rproc_alloc() - allocate a remote processor handle
> >   * @dev: the underlying device
> > @@ -2007,42 +2034,21 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
> >                         const char *firmware, int len)
> >  {
> >       struct rproc *rproc;
> > -     char *p, *template = "rproc-%s-fw";
> > -     int name_len;
> >
> >       if (!dev || !name || !ops)
> >               return NULL;
> >
> > -     if (!firmware) {
> > -             /*
> > -              * If the caller didn't pass in a firmware name then
> > -              * construct a default name.
> > -              */
> > -             name_len = strlen(name) + strlen(template) - 2 + 1;
> > -             p = kmalloc(name_len, GFP_KERNEL);
> > -             if (!p)
> > -                     return NULL;
> > -             snprintf(p, name_len, template, name);
> > -     } else {
> > -             p = kstrdup(firmware, GFP_KERNEL);
> > -             if (!p)
> > -                     return NULL;
> > -     }
> > -
> >       rproc = kzalloc(sizeof(struct rproc) + len, GFP_KERNEL);
> > -     if (!rproc) {
> > -             kfree(p);
> > +     if (!rproc)
> >               return NULL;
> > -     }
> > +
> > +     if (rproc_alloc_firmware(rproc, name, firmware))
> > +             goto free_rproc;
> >
> >       rproc->ops = kmemdup(ops, sizeof(*ops), GFP_KERNEL);
> > -     if (!rproc->ops) {
> > -             kfree(p);
> > -             kfree(rproc);
> > -             return NULL;
> > -     }
> > +     if (!rproc->ops)
> > +             goto free_firmware;
> >
> > -     rproc->firmware = p;
> >       rproc->name = name;
> >       rproc->priv = &rproc[1];
> >       rproc->auto_boot = true;
> > @@ -2091,6 +2097,12 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
> >       rproc->state = RPROC_OFFLINE;
> >
> >       return rproc;
> > +
> > +free_firmware:
> > +     kfree(rproc->firmware);
> > +free_rproc:
> > +     kfree(rproc);
> > +     return NULL;
> >  }
> >  EXPORT_SYMBOL(rproc_alloc);
> >
> >
diff mbox series

Patch

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 80056513ae71..4dee63f319ba 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1979,6 +1979,33 @@  static const struct device_type rproc_type = {
 	.release	= rproc_type_release,
 };
 
+static int rproc_alloc_firmware(struct rproc *rproc,
+				const char *name, const char *firmware)
+{
+	char *p, *template = "rproc-%s-fw";
+	int name_len;
+
+	if (!firmware) {
+		/*
+		 * If the caller didn't pass in a firmware name then
+		 * construct a default name.
+		 */
+		name_len = strlen(name) + strlen(template) - 2 + 1;
+		p = kmalloc(name_len, GFP_KERNEL);
+		if (!p)
+			return -ENOMEM;
+		snprintf(p, name_len, template, name);
+	} else {
+		p = kstrdup(firmware, GFP_KERNEL);
+		if (!p)
+			return -ENOMEM;
+	}
+
+	rproc->firmware = p;
+
+	return 0;
+}
+
 /**
  * rproc_alloc() - allocate a remote processor handle
  * @dev: the underlying device
@@ -2007,42 +2034,21 @@  struct rproc *rproc_alloc(struct device *dev, const char *name,
 			  const char *firmware, int len)
 {
 	struct rproc *rproc;
-	char *p, *template = "rproc-%s-fw";
-	int name_len;
 
 	if (!dev || !name || !ops)
 		return NULL;
 
-	if (!firmware) {
-		/*
-		 * If the caller didn't pass in a firmware name then
-		 * construct a default name.
-		 */
-		name_len = strlen(name) + strlen(template) - 2 + 1;
-		p = kmalloc(name_len, GFP_KERNEL);
-		if (!p)
-			return NULL;
-		snprintf(p, name_len, template, name);
-	} else {
-		p = kstrdup(firmware, GFP_KERNEL);
-		if (!p)
-			return NULL;
-	}
-
 	rproc = kzalloc(sizeof(struct rproc) + len, GFP_KERNEL);
-	if (!rproc) {
-		kfree(p);
+	if (!rproc)
 		return NULL;
-	}
+
+	if (rproc_alloc_firmware(rproc, name, firmware))
+		goto free_rproc;
 
 	rproc->ops = kmemdup(ops, sizeof(*ops), GFP_KERNEL);
-	if (!rproc->ops) {
-		kfree(p);
-		kfree(rproc);
-		return NULL;
-	}
+	if (!rproc->ops)
+		goto free_firmware;
 
-	rproc->firmware = p;
 	rproc->name = name;
 	rproc->priv = &rproc[1];
 	rproc->auto_boot = true;
@@ -2091,6 +2097,12 @@  struct rproc *rproc_alloc(struct device *dev, const char *name,
 	rproc->state = RPROC_OFFLINE;
 
 	return rproc;
+
+free_firmware:
+	kfree(rproc->firmware);
+free_rproc:
+	kfree(rproc);
+	return NULL;
 }
 EXPORT_SYMBOL(rproc_alloc);