[PATCH 0/2] mfd: smsc-ece1099: Adjustments for smsc_i2c_probe()

[PATCH 0/2] mfd: smsc-ece1099: Adjustments for smsc_i2c_probe()

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 16 Jan 2018 09:14:56 +0100

Two update suggestions were taken into account
from static source code analysis.

Markus Elfring (2):
  Delete an error message for a failed memory allocation
  Improve a size determination

 drivers/mfd/smsc-ece1099.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

-- 
2.15.1

[PATCH 1/2] mfd: smsc-ece1099: Delete an error message for a failed memory allocation in smsc_i2c_probe()

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 16 Jan 2018 08:52:27 +0100

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/mfd/smsc-ece1099.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/mfd/smsc-ece1099.c b/drivers/mfd/smsc-ece1099.c
index 93a8297de52a..b9d96651cc0d 100644
--- a/drivers/mfd/smsc-ece1099.c
+++ b/drivers/mfd/smsc-ece1099.c
@@ -39,10 +39,8 @@ static int smsc_i2c_probe(struct i2c_client *i2c,
 
 	smsc = devm_kzalloc(&i2c->dev, sizeof(struct smsc),
 				GFP_KERNEL);
-	if (!smsc) {
-		dev_err(&i2c->dev, "smsc mfd driver memory allocation failed\n");
+	if (!smsc)
 		return -ENOMEM;
-	}
 
 	smsc->regmap = devm_regmap_init_i2c(i2c, &smsc_regmap_config);
 	if (IS_ERR(smsc->regmap))
-- 
2.15.1

[PATCH 2/2] mfd: smsc-ece1099: Improve a size determination in smsc_i2c_probe()

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 16 Jan 2018 08:58:26 +0100

Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/mfd/smsc-ece1099.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/mfd/smsc-ece1099.c b/drivers/mfd/smsc-ece1099.c
index b9d96651cc0d..6681205dd2c0 100644
--- a/drivers/mfd/smsc-ece1099.c
+++ b/drivers/mfd/smsc-ece1099.c
@@ -33,12 +33,10 @@ static const struct regmap_config smsc_regmap_config = {
 static int smsc_i2c_probe(struct i2c_client *i2c,
 			const struct i2c_device_id *id)
 {
-	struct smsc *smsc;
 	int devid, rev, venid_l, venid_h;
 	int ret;
+	struct smsc *smsc = devm_kzalloc(&i2c->dev, sizeof(*smsc), GFP_KERNEL);
 
-	smsc = devm_kzalloc(&i2c->dev, sizeof(struct smsc),
-				GFP_KERNEL);
 	if (!smsc)
 		return -ENOMEM;
 
-- 
2.15.1

Re: [PATCH 2/2] mfd: smsc-ece1099: Improve a size determination in smsc_i2c_probe()

[Lee Jones]

On Tue, 16 Jan 2018, SF Markus Elfring wrote:

> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Tue, 16 Jan 2018 08:58:26 +0100
> 
> Replace the specification of a data structure by a pointer dereference
> as the parameter for the operator "sizeof" to make the corresponding size
> determination a bit safer according to the Linux coding style convention.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---
>  drivers/mfd/smsc-ece1099.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/mfd/smsc-ece1099.c b/drivers/mfd/smsc-ece1099.c
> index b9d96651cc0d..6681205dd2c0 100644
> --- a/drivers/mfd/smsc-ece1099.c
> +++ b/drivers/mfd/smsc-ece1099.c
> @@ -33,12 +33,10 @@ static const struct regmap_config smsc_regmap_config = {
>  static int smsc_i2c_probe(struct i2c_client *i2c,
>  			const struct i2c_device_id *id)
>  {
> -	struct smsc *smsc;
>  	int devid, rev, venid_l, venid_h;
>  	int ret;
> +	struct smsc *smsc = devm_kzalloc(&i2c->dev, sizeof(*smsc), GFP_KERNEL);

Please keep these separate.

> -	smsc = devm_kzalloc(&i2c->dev, sizeof(struct smsc),
> -				GFP_KERNEL);
>  	if (!smsc)
>  		return -ENOMEM;
>  

-- 
Lee Jones
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog

Re: [PATCH 1/2] mfd: smsc-ece1099: Delete an error message for a failed memory allocation in smsc_i2c_probe()

[Lee Jones]

On Tue, 16 Jan 2018, SF Markus Elfring wrote:

> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Tue, 16 Jan 2018 08:52:27 +0100
> 
> Omit an extra message for a memory allocation failure in this function.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---
>  drivers/mfd/smsc-ece1099.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)

Applied, thanks.

-- 
Lee Jones
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog