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* [PATCH] hotplug/drc-info: ininitialize fndit to zero
@ 2019-03-16 21:40 ` Colin King
  0 siblings, 0 replies; 5+ messages in thread
From: Colin King @ 2019-03-16 21:40 UTC (permalink / raw)
  To: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman,
	Tyrel Datwyler, Bjorn Helgaas, linuxppc-dev, linux-pci
  Cc: kernel-janitors, linux-kernel

From: Colin Ian King <colin.king@canonical.com>

Currently variable fndit is not initialized and contains a
garbage value, later it is set to 1 if a drc entry is found.
Ensure fndit is not containing garbage by initializing it to
zero. Also remove an extraneous space at the end of an
sprintf call.

Detected by static analysis with cppcheck.

Fixes: 2fcf3ae508c2 ("hotplug/drc-info: Add code to search ibm,drc-info property")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/pci/hotplug/rpaphp_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
index bcd5d357ca23..28213f44f64a 100644
--- a/drivers/pci/hotplug/rpaphp_core.c
+++ b/drivers/pci/hotplug/rpaphp_core.c
@@ -230,7 +230,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
 	struct of_drc_info drc;
 	const __be32 *value;
 	char cell_drc_name[MAX_DRC_NAME_LEN];
-	int j, fndit;
+	int j, fndit = 0;
 
 	info = of_find_property(dn->parent, "ibm,drc-info", NULL);
 	if (info == NULL)
@@ -254,7 +254,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
 	/* Found it */
 
 	if (fndit)
-		sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix, 
+		sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix,
 			my_index);
 
 	if (((drc_name == NULL) ||
-- 
2.20.1


^ permalink raw reply related	[flat|nested] 5+ messages in thread
* [PATCH] hotplug/drc-info: ininitialize fndit to zero
@ 2019-03-16 21:40 ` Colin King
  0 siblings, 0 replies; 5+ messages in thread
From: Colin King @ 2019-03-16 21:40 UTC (permalink / raw)
  To: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman,
	Tyrel Datwyler, Bjorn Helgaas, linuxppc-dev, linux-pci
  Cc: kernel-janitors, linux-kernel

From: Colin Ian King <colin.king@canonical.com>

Currently variable fndit is not initialized and contains a
garbage value, later it is set to 1 if a drc entry is found.
Ensure fndit is not containing garbage by initializing it to
zero. Also remove an extraneous space at the end of an
sprintf call.

Detected by static analysis with cppcheck.

Fixes: 2fcf3ae508c2 ("hotplug/drc-info: Add code to search ibm,drc-info property")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/pci/hotplug/rpaphp_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
index bcd5d357ca23..28213f44f64a 100644
--- a/drivers/pci/hotplug/rpaphp_core.c
+++ b/drivers/pci/hotplug/rpaphp_core.c
@@ -230,7 +230,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
 	struct of_drc_info drc;
 	const __be32 *value;
 	char cell_drc_name[MAX_DRC_NAME_LEN];
-	int j, fndit;
+	int j, fndit = 0;
 
 	info = of_find_property(dn->parent, "ibm,drc-info", NULL);
 	if (info = NULL)
@@ -254,7 +254,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
 	/* Found it */
 
 	if (fndit)
-		sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix, 
+		sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix,
 			my_index);
 
 	if (((drc_name = NULL) ||
-- 
2.20.1

^ permalink raw reply related	[flat|nested] 5+ messages in thread
* Re: [PATCH] hotplug/drc-info: ininitialize fndit to zero
  2019-03-16 21:40 ` Colin King
  (?)
@ 2019-03-20 22:12   ` Bjorn Helgaas
  -1 siblings, 0 replies; 5+ messages in thread
From: Bjorn Helgaas @ 2019-03-20 22:12 UTC (permalink / raw)
  To: Colin King
  Cc: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman,
	Tyrel Datwyler, linuxppc-dev, linux-pci, kernel-janitors,
	linux-kernel, Michael Bringmann

[+cc Michael B (original author)]

On Sat, Mar 16, 2019 at 09:40:16PM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> Currently variable fndit is not initialized and contains a
> garbage value, later it is set to 1 if a drc entry is found.
> Ensure fndit is not containing garbage by initializing it to
> zero. Also remove an extraneous space at the end of an
> sprintf call.
> 
> Detected by static analysis with cppcheck.
> 
> Fixes: 2fcf3ae508c2 ("hotplug/drc-info: Add code to search ibm,drc-info property")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>

Michael E, I assume you'll take this since you took the original?
Let me know if you want me to.

> ---
>  drivers/pci/hotplug/rpaphp_core.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
> index bcd5d357ca23..28213f44f64a 100644
> --- a/drivers/pci/hotplug/rpaphp_core.c
> +++ b/drivers/pci/hotplug/rpaphp_core.c
> @@ -230,7 +230,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
>  	struct of_drc_info drc;
>  	const __be32 *value;
>  	char cell_drc_name[MAX_DRC_NAME_LEN];
> -	int j, fndit;
> +	int j, fndit = 0;
>  
>  	info = of_find_property(dn->parent, "ibm,drc-info", NULL);
>  	if (info == NULL)
> @@ -254,7 +254,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
>  	/* Found it */
>  
>  	if (fndit)
> -		sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix, 
> +		sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix,
>  			my_index);
>  
>  	if (((drc_name == NULL) ||
> -- 
> 2.20.1
> 

^ permalink raw reply	[flat|nested] 5+ messages in thread
* Re: [PATCH] hotplug/drc-info: ininitialize fndit to zero
@ 2019-03-20 22:12   ` Bjorn Helgaas
  0 siblings, 0 replies; 5+ messages in thread
From: Bjorn Helgaas @ 2019-03-20 22:12 UTC (permalink / raw)
  To: Colin King
  Cc: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman,
	Tyrel Datwyler, linuxppc-dev, linux-pci, kernel-janitors,
	linux-kernel, Michael Bringmann

[+cc Michael B (original author)]

On Sat, Mar 16, 2019 at 09:40:16PM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> Currently variable fndit is not initialized and contains a
> garbage value, later it is set to 1 if a drc entry is found.
> Ensure fndit is not containing garbage by initializing it to
> zero. Also remove an extraneous space at the end of an
> sprintf call.
> 
> Detected by static analysis with cppcheck.
> 
> Fixes: 2fcf3ae508c2 ("hotplug/drc-info: Add code to search ibm,drc-info property")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>

Michael E, I assume you'll take this since you took the original?
Let me know if you want me to.

> ---
>  drivers/pci/hotplug/rpaphp_core.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
> index bcd5d357ca23..28213f44f64a 100644
> --- a/drivers/pci/hotplug/rpaphp_core.c
> +++ b/drivers/pci/hotplug/rpaphp_core.c
> @@ -230,7 +230,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
>  	struct of_drc_info drc;
>  	const __be32 *value;
>  	char cell_drc_name[MAX_DRC_NAME_LEN];
> -	int j, fndit;
> +	int j, fndit = 0;
>  
>  	info = of_find_property(dn->parent, "ibm,drc-info", NULL);
>  	if (info = NULL)
> @@ -254,7 +254,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
>  	/* Found it */
>  
>  	if (fndit)
> -		sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix, 
> +		sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix,
>  			my_index);
>  
>  	if (((drc_name = NULL) ||
> -- 
> 2.20.1
> 

^ permalink raw reply	[flat|nested] 5+ messages in thread
* Re: [PATCH] hotplug/drc-info: ininitialize fndit to zero
@ 2019-03-20 22:12   ` Bjorn Helgaas
  0 siblings, 0 replies; 5+ messages in thread
From: Bjorn Helgaas @ 2019-03-20 22:12 UTC (permalink / raw)
  To: Colin King
  Cc: linux-pci, kernel-janitors, linux-kernel, Michael Bringmann,
	Paul Mackerras, Tyrel Datwyler, linuxppc-dev

[+cc Michael B (original author)]

On Sat, Mar 16, 2019 at 09:40:16PM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> Currently variable fndit is not initialized and contains a
> garbage value, later it is set to 1 if a drc entry is found.
> Ensure fndit is not containing garbage by initializing it to
> zero. Also remove an extraneous space at the end of an
> sprintf call.
> 
> Detected by static analysis with cppcheck.
> 
> Fixes: 2fcf3ae508c2 ("hotplug/drc-info: Add code to search ibm,drc-info property")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>

Michael E, I assume you'll take this since you took the original?
Let me know if you want me to.

> ---
>  drivers/pci/hotplug/rpaphp_core.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
> index bcd5d357ca23..28213f44f64a 100644
> --- a/drivers/pci/hotplug/rpaphp_core.c
> +++ b/drivers/pci/hotplug/rpaphp_core.c
> @@ -230,7 +230,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
>  	struct of_drc_info drc;
>  	const __be32 *value;
>  	char cell_drc_name[MAX_DRC_NAME_LEN];
> -	int j, fndit;
> +	int j, fndit = 0;
>  
>  	info = of_find_property(dn->parent, "ibm,drc-info", NULL);
>  	if (info == NULL)
> @@ -254,7 +254,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
>  	/* Found it */
>  
>  	if (fndit)
> -		sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix, 
> +		sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix,
>  			my_index);
>  
>  	if (((drc_name == NULL) ||
> -- 
> 2.20.1
> 

^ permalink raw reply	[flat|nested] 5+ messages in thread
end of thread, other threads:[~2019-03-20 22:14 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-03-16 21:40 [PATCH] hotplug/drc-info: ininitialize fndit to zero Colin King
2019-03-16 21:40 ` Colin King
2019-03-20 22:12 ` Bjorn Helgaas
2019-03-20 22:12   ` Bjorn Helgaas
2019-03-20 22:12   ` Bjorn Helgaas

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