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| Started by | Christophe JAILLET <christophe.jaillet@wanadoo.fr> |
|---|---|
| First post | 2016-10-02 08:10 +0200 |
| Last post | 2016-10-05 15:20 +0200 |
| Articles | 3 — 3 participants |
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[PATCH] drm: Release resources with a safer function Christophe JAILLET <christophe.jaillet@wanadoo.fr> - 2016-10-02 08:10 +0200
Re: [PATCH] drm: Release resources with a safer function Ville Syrjälä <ville.syrjala@linux.intel.com> - 2016-10-03 09:20 +0200
Re: [PATCH] drm: Release resources with a safer function Daniel Vetter <daniel@ffwll.ch> - 2016-10-05 15:20 +0200
| From | Christophe JAILLET <christophe.jaillet@wanadoo.fr> |
|---|---|
| Date | 2016-10-02 08:10 +0200 |
| Subject | [PATCH] drm: Release resources with a safer function |
| Message-ID | <snI8h-2YG-3@gated-at.bofh.it> |
We should use 'ida_simple_remove()' instead of 'ida_remove()' when freeing
resources allocated with 'ida_simple_get()'.
This as been spotted with the following coccinelle script which tries to
detect missing 'ida_simple_remove()' call in error handling paths.
///////////////
@@
expression x;
identifier l;
@@
* x = ida_simple_get(...);
...
if (...) {
...
}
...
if (...) {
...
goto l;
}
...
* l: ... when != ida_simple_remove(...);
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
drivers/gpu/drm/drm_connector.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 26bb78c76481..2e7430283043 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -250,10 +250,10 @@ int drm_connector_init(struct drm_device *dev,
connector->debugfs_entry = NULL;
out_put_type_id:
if (ret)
- ida_remove(connector_ida, connector->connector_type_id);
+ ida_simple_remove(connector_ida, connector->connector_type_id);
out_put_id:
if (ret)
- ida_remove(&config->connector_ida, connector->index);
+ ida_simple_remove(&config->connector_ida, connector->index);
out_put:
if (ret)
drm_mode_object_unregister(dev, &connector->base);
--
2.7.4
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| From | Ville Syrjälä <ville.syrjala@linux.intel.com> |
|---|---|
| Date | 2016-10-03 09:20 +0200 |
| Message-ID | <so5HA-Yv-9@gated-at.bofh.it> |
| In reply to | #1494532 |
On Sun, Oct 02, 2016 at 08:01:22AM +0200, Christophe JAILLET wrote:
> We should use 'ida_simple_remove()' instead of 'ida_remove()' when freeing
> resources allocated with 'ida_simple_get()'.
Should fix drm_connector_cleanup() then as well...
>
> This as been spotted with the following coccinelle script which tries to
> detect missing 'ida_simple_remove()' call in error handling paths.
>
> ///////////////
> @@
> expression x;
> identifier l;
> @@
>
> * x = ida_simple_get(...);
> ...
> if (...) {
> ...
> }
> ...
> if (...) {
> ...
> goto l;
> }
> ...
> * l: ... when != ida_simple_remove(...);
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
> drivers/gpu/drm/drm_connector.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
> index 26bb78c76481..2e7430283043 100644
> --- a/drivers/gpu/drm/drm_connector.c
> +++ b/drivers/gpu/drm/drm_connector.c
> @@ -250,10 +250,10 @@ int drm_connector_init(struct drm_device *dev,
> connector->debugfs_entry = NULL;
> out_put_type_id:
> if (ret)
> - ida_remove(connector_ida, connector->connector_type_id);
> + ida_simple_remove(connector_ida, connector->connector_type_id);
> out_put_id:
> if (ret)
> - ida_remove(&config->connector_ida, connector->index);
> + ida_simple_remove(&config->connector_ida, connector->index);
> out_put:
> if (ret)
> drm_mode_object_unregister(dev, &connector->base);
> --
> 2.7.4
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Ville Syrjälä
Intel OTC
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| From | Daniel Vetter <daniel@ffwll.ch> |
|---|---|
| Date | 2016-10-05 15:20 +0200 |
| Message-ID | <soUh3-1sa-1@gated-at.bofh.it> |
| In reply to | #1494532 |
On Sun, Oct 02, 2016 at 08:01:22AM +0200, Christophe JAILLET wrote:
> We should use 'ida_simple_remove()' instead of 'ida_remove()' when freeing
> resources allocated with 'ida_simple_get()'.
>
> This as been spotted with the following coccinelle script which tries to
> detect missing 'ida_simple_remove()' call in error handling paths.
>
> ///////////////
> @@
> expression x;
> identifier l;
> @@
>
> * x = ida_simple_get(...);
> ...
> if (...) {
> ...
> }
> ...
> if (...) {
> ...
> goto l;
> }
> ...
> * l: ... when != ida_simple_remove(...);
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
kerneldoc for ida_simple_get/remove is rather sparse, would be great to
improve that a bit. Merged this one to drm-misc now, follow-up patch for
the place Ville spotted would be great too.
-Daniel
> ---
> drivers/gpu/drm/drm_connector.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
> index 26bb78c76481..2e7430283043 100644
> --- a/drivers/gpu/drm/drm_connector.c
> +++ b/drivers/gpu/drm/drm_connector.c
> @@ -250,10 +250,10 @@ int drm_connector_init(struct drm_device *dev,
> connector->debugfs_entry = NULL;
> out_put_type_id:
> if (ret)
> - ida_remove(connector_ida, connector->connector_type_id);
> + ida_simple_remove(connector_ida, connector->connector_type_id);
> out_put_id:
> if (ret)
> - ida_remove(&config->connector_ida, connector->index);
> + ida_simple_remove(&config->connector_ida, connector->index);
> out_put:
> if (ret)
> drm_mode_object_unregister(dev, &connector->base);
> --
> 2.7.4
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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