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[PATCH 1/4] of: use kbasename instead of open coding

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  [PATCH 1/4] of: use kbasename instead of open coding Rob Herring <robh@kernel.org> - 2017-06-14 22:40 +0200
    Re: [PATCH 1/4] of: use kbasename instead of open coding Andy Shevchenko <andy.shevchenko@gmail.com> - 2017-06-17 19:40 +0200

#1666213 — [PATCH 1/4] of: use kbasename instead of open coding

Several places in DT code open code the equivalent of kbasename.
Replace them.

The behavior for root nodes in node_name_cmp will be slightly different.
Instead of comparing "/", "" will be compared. The comparison will be
the same.

Signed-off-by: Rob Herring <robh@kernel.org>
---
 drivers/of/base.c     | 5 +----
 drivers/of/platform.c | 2 +-
 drivers/of/resolver.c | 4 ++--
 3 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 28d5f53bc631..054159ccd5f8 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -773,10 +773,7 @@ static struct device_node *__of_find_node_by_path(struct device_node *parent,
 		return NULL;
 
 	__for_each_child_of_node(parent, child) {
-		const char *name = strrchr(child->full_name, '/');
-		if (WARN(!name, "malformed device_node %s\n", child->full_name))
-			continue;
-		name++;
+		const char *name = kbasename(child->full_name);
 		if (strncmp(path, name, len) == 0 && (strlen(name) == len))
 			return child;
 	}
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 71fecc2debfc..8f73413fa243 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -99,7 +99,7 @@ static void of_device_make_bus_id(struct device *dev)
 
 		/* format arguments only used if dev_name() resolves to NULL */
 		dev_set_name(dev, dev_name(dev) ? "%s:%s" : "%s",
-			     strrchr(node->full_name, '/') + 1, dev_name(dev));
+			     kbasename(node->full_name), dev_name(dev));
 		node = node->parent;
 	}
 }
diff --git a/drivers/of/resolver.c b/drivers/of/resolver.c
index 771f4844c781..63626d7d9adb 100644
--- a/drivers/of/resolver.c
+++ b/drivers/of/resolver.c
@@ -165,8 +165,8 @@ static int update_usages_of_a_phandle_reference(struct device_node *overlay,
 static int node_name_cmp(const struct device_node *dn1,
 		const struct device_node *dn2)
 {
-	const char *n1 = strrchr(dn1->full_name, '/') ? : "/";
-	const char *n2 = strrchr(dn2->full_name, '/') ? : "/";
+	const char *n1 = kbasename(dn1->full_name);
+	const char *n2 = kbasename(dn2->full_name);
 
 	return of_node_cmp(n1, n2);
 }
-- 
2.11.0

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#1668379

On Wed, Jun 14, 2017 at 11:30 PM, Rob Herring <robh@kernel.org> wrote:
> Several places in DT code open code the equivalent of kbasename.
> Replace them.
>
> The behavior for root nodes in node_name_cmp will be slightly different.
> Instead of comparing "/", "" will be compared. The comparison will be
> the same.

Reviewed-by: Andy Shevchenko <andy.shevhchenko@gmail.com>

>
> Signed-off-by: Rob Herring <robh@kernel.org>
> ---
>  drivers/of/base.c     | 5 +----
>  drivers/of/platform.c | 2 +-
>  drivers/of/resolver.c | 4 ++--
>  3 files changed, 4 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/of/base.c b/drivers/of/base.c
> index 28d5f53bc631..054159ccd5f8 100644
> --- a/drivers/of/base.c
> +++ b/drivers/of/base.c
> @@ -773,10 +773,7 @@ static struct device_node *__of_find_node_by_path(struct device_node *parent,
>                 return NULL;
>
>         __for_each_child_of_node(parent, child) {
> -               const char *name = strrchr(child->full_name, '/');
> -               if (WARN(!name, "malformed device_node %s\n", child->full_name))
> -                       continue;
> -               name++;
> +               const char *name = kbasename(child->full_name);
>                 if (strncmp(path, name, len) == 0 && (strlen(name) == len))
>                         return child;
>         }
> diff --git a/drivers/of/platform.c b/drivers/of/platform.c
> index 71fecc2debfc..8f73413fa243 100644
> --- a/drivers/of/platform.c
> +++ b/drivers/of/platform.c
> @@ -99,7 +99,7 @@ static void of_device_make_bus_id(struct device *dev)
>
>                 /* format arguments only used if dev_name() resolves to NULL */
>                 dev_set_name(dev, dev_name(dev) ? "%s:%s" : "%s",
> -                            strrchr(node->full_name, '/') + 1, dev_name(dev));
> +                            kbasename(node->full_name), dev_name(dev));
>                 node = node->parent;
>         }
>  }
> diff --git a/drivers/of/resolver.c b/drivers/of/resolver.c
> index 771f4844c781..63626d7d9adb 100644
> --- a/drivers/of/resolver.c
> +++ b/drivers/of/resolver.c
> @@ -165,8 +165,8 @@ static int update_usages_of_a_phandle_reference(struct device_node *overlay,
>  static int node_name_cmp(const struct device_node *dn1,
>                 const struct device_node *dn2)
>  {
> -       const char *n1 = strrchr(dn1->full_name, '/') ? : "/";
> -       const char *n2 = strrchr(dn2->full_name, '/') ? : "/";
> +       const char *n1 = kbasename(dn1->full_name);
> +       const char *n2 = kbasename(dn2->full_name);
>
>         return of_node_cmp(n1, n2);
>  }
> --
> 2.11.0
>



-- 
With Best Regards,
Andy Shevchenko

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