Re: [PATCH] of: make sure of_alias is initialized before accessing it

[Laurentiu Tudor]

On 09/08/2014 04:29 PM, Grant Likely wrote:
> On Wed, 27 Aug 2014 17:09:39 +0300, Laurentiu Tudor  
> wrote:
>> Simply swap of_alias and of_chosen initialization so
>> that of_alias ends up read first. This must be done
>> because it is accessed couple of lines below when
>> trying to initialize the of_stdout using the alias
>> based legacy method.
>>
>> [Fixes a752ee5 - tty: Update hypervisor tty drivers to   
>>
>> use core stdout parsing code]
>>
>> Signed-off-by: Laurentiu Tudor 
>> Cc: Grant Likely 
>> ---
>>  drivers/of/base.c | 8 
>>  1 file changed, 4 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/of/base.c b/drivers/of/base.c
>> index d8574ad..52f8506 100644
>> --- a/drivers/of/base.c
>> +++ b/drivers/of/base.c
>> @@ -1847,6 +1847,10 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 
>> align))
>>  {
>>  struct property *pp;
>>  
>> +of_aliases = of_find_node_by_path("/aliases");
>> +if (!of_aliases)
>> +return;
>> +
>>  of_chosen = of_find_node_by_path("/chosen");
>>  if (of_chosen == NULL)
>>  of_chosen = of_find_node_by_path("/chosen@0");
>> @@ -1862,10 +1866,6 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 
>> align))
>>  of_stdout = of_find_node_by_path(name);
>>  }
>>  
>> -of_aliases = of_find_node_by_path("/aliases");
>> -if (!of_aliases)
>> -return;
>> -
> 
> Close, but not quite. The 'if (!of_aliases)' test should not be moved.
> Only the search for of_find_node_by_path().

Eek, completely missed this. Sorry.

> I've fixed it up and applied.
 
Thanks!

---
Best Regards, Laurentiu
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Re: [PATCH] of: make sure of_alias is initialized before accessing it

[Grant Likely]

On Wed, 27 Aug 2014 17:09:39 +0300, Laurentiu Tudor  
wrote:
> Simply swap of_alias and of_chosen initialization so
> that of_alias ends up read first. This must be done
> because it is accessed couple of lines below when
> trying to initialize the of_stdout using the alias
> based legacy method.
> 
> [Fixes a752ee5 - tty: Update hypervisor tty drivers to
>   
> use core stdout parsing code]
> 
> Signed-off-by: Laurentiu Tudor 
> Cc: Grant Likely 
> ---
>  drivers/of/base.c | 8 
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/of/base.c b/drivers/of/base.c
> index d8574ad..52f8506 100644
> --- a/drivers/of/base.c
> +++ b/drivers/of/base.c
> @@ -1847,6 +1847,10 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 
> align))
>  {
>   struct property *pp;
>  
> + of_aliases = of_find_node_by_path("/aliases");
> + if (!of_aliases)
> + return;
> +
>   of_chosen = of_find_node_by_path("/chosen");
>   if (of_chosen == NULL)
>   of_chosen = of_find_node_by_path("/chosen@0");
> @@ -1862,10 +1866,6 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 
> align))
>   of_stdout = of_find_node_by_path(name);
>   }
>  
> - of_aliases = of_find_node_by_path("/aliases");
> - if (!of_aliases)
> - return;
> -

Close, but not quite. The 'if (!of_aliases)' test should not be moved.
Only the search for of_find_node_by_path(). I've fixed it up and
applied.

g.

>   for_each_property_of_node(of_aliases, pp) {
>   const char *start = pp->name;
>   const char *end = start + strlen(start);
> -- 
> 1.8.3.1

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Re: [PATCH] of: make sure of_alias is initialized before accessing it

[Grant Likely]

On Wed, 27 Aug 2014 17:09:39 +0300, Laurentiu Tudor b10...@freescale.com 
wrote:
 Simply swap of_alias and of_chosen initialization so
 that of_alias ends up read first. This must be done
 because it is accessed couple of lines below when
 trying to initialize the of_stdout using the alias
 based legacy method.
 
 [Fixes a752ee5 - tty: Update hypervisor tty drivers to
   
 use core stdout parsing code]
 
 Signed-off-by: Laurentiu Tudor laurentiu.tu...@freescale.com
 Cc: Grant Likely grant.lik...@linaro.org
 ---
  drivers/of/base.c | 8 
  1 file changed, 4 insertions(+), 4 deletions(-)
 
 diff --git a/drivers/of/base.c b/drivers/of/base.c
 index d8574ad..52f8506 100644
 --- a/drivers/of/base.c
 +++ b/drivers/of/base.c
 @@ -1847,6 +1847,10 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 
 align))
  {
   struct property *pp;
  
 + of_aliases = of_find_node_by_path(/aliases);
 + if (!of_aliases)
 + return;
 +
   of_chosen = of_find_node_by_path(/chosen);
   if (of_chosen == NULL)
   of_chosen = of_find_node_by_path(/chosen@0);
 @@ -1862,10 +1866,6 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 
 align))
   of_stdout = of_find_node_by_path(name);
   }
  
 - of_aliases = of_find_node_by_path(/aliases);
 - if (!of_aliases)
 - return;
 -

Close, but not quite. The 'if (!of_aliases)' test should not be moved.
Only the search for of_find_node_by_path(). I've fixed it up and
applied.

g.

   for_each_property_of_node(of_aliases, pp) {
   const char *start = pp-name;
   const char *end = start + strlen(start);
 -- 
 1.8.3.1

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Re: [PATCH] of: make sure of_alias is initialized before accessing it

[Laurentiu Tudor]

On 09/08/2014 04:29 PM, Grant Likely wrote:
 On Wed, 27 Aug 2014 17:09:39 +0300, Laurentiu Tudor b10...@freescale.com 
 wrote:
 Simply swap of_alias and of_chosen initialization so
 that of_alias ends up read first. This must be done
 because it is accessed couple of lines below when
 trying to initialize the of_stdout using the alias
 based legacy method.

 [Fixes a752ee5 - tty: Update hypervisor tty drivers to   

 use core stdout parsing code]

 Signed-off-by: Laurentiu Tudor laurentiu.tu...@freescale.com
 Cc: Grant Likely grant.lik...@linaro.org
 ---
  drivers/of/base.c | 8 
  1 file changed, 4 insertions(+), 4 deletions(-)

 diff --git a/drivers/of/base.c b/drivers/of/base.c
 index d8574ad..52f8506 100644
 --- a/drivers/of/base.c
 +++ b/drivers/of/base.c
 @@ -1847,6 +1847,10 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 
 align))
  {
  struct property *pp;
  
 +of_aliases = of_find_node_by_path(/aliases);
 +if (!of_aliases)
 +return;
 +
  of_chosen = of_find_node_by_path(/chosen);
  if (of_chosen == NULL)
  of_chosen = of_find_node_by_path(/chosen@0);
 @@ -1862,10 +1866,6 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 
 align))
  of_stdout = of_find_node_by_path(name);
  }
  
 -of_aliases = of_find_node_by_path(/aliases);
 -if (!of_aliases)
 -return;
 -
 
 Close, but not quite. The 'if (!of_aliases)' test should not be moved.
 Only the search for of_find_node_by_path().

Eek, completely missed this. Sorry.

 I've fixed it up and applied.
 
Thanks!

---
Best Regards, Laurentiu
--
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the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[PATCH] of: make sure of_alias is initialized before accessing it

[Laurentiu Tudor]

Simply swap of_alias and of_chosen initialization so
that of_alias ends up read first. This must be done
because it is accessed couple of lines below when
trying to initialize the of_stdout using the alias
based legacy method.

[Fixes a752ee5 - tty: Update hypervisor tty drivers to  
use core stdout parsing code]

Signed-off-by: Laurentiu Tudor 
Cc: Grant Likely 
---
 drivers/of/base.c | 8 
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index d8574ad..52f8506 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1847,6 +1847,10 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 
align))
 {
struct property *pp;
 
+   of_aliases = of_find_node_by_path("/aliases");
+   if (!of_aliases)
+   return;
+
of_chosen = of_find_node_by_path("/chosen");
if (of_chosen == NULL)
of_chosen = of_find_node_by_path("/chosen@0");
@@ -1862,10 +1866,6 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 
align))
of_stdout = of_find_node_by_path(name);
}
 
-   of_aliases = of_find_node_by_path("/aliases");
-   if (!of_aliases)
-   return;
-
for_each_property_of_node(of_aliases, pp) {
const char *start = pp->name;
const char *end = start + strlen(start);
-- 
1.8.3.1
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[PATCH] of: make sure of_alias is initialized before accessing it

[Laurentiu Tudor]

Simply swap of_alias and of_chosen initialization so
that of_alias ends up read first. This must be done
because it is accessed couple of lines below when
trying to initialize the of_stdout using the alias
based legacy method.

[Fixes a752ee5 - tty: Update hypervisor tty drivers to  
use core stdout parsing code]

Signed-off-by: Laurentiu Tudor laurentiu.tu...@freescale.com
Cc: Grant Likely grant.lik...@linaro.org
---
 drivers/of/base.c | 8 
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index d8574ad..52f8506 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1847,6 +1847,10 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 
align))
 {
struct property *pp;
 
+   of_aliases = of_find_node_by_path(/aliases);
+   if (!of_aliases)
+   return;
+
of_chosen = of_find_node_by_path(/chosen);
if (of_chosen == NULL)
of_chosen = of_find_node_by_path(/chosen@0);
@@ -1862,10 +1866,6 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 
align))
of_stdout = of_find_node_by_path(name);
}
 
-   of_aliases = of_find_node_by_path(/aliases);
-   if (!of_aliases)
-   return;
-
for_each_property_of_node(of_aliases, pp) {
const char *start = pp-name;
const char *end = start + strlen(start);
-- 
1.8.3.1
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