Den 05.01.2018 20.14, skrev David Lechner:
On 01/05/2018 10:56 AM, Noralf Trønnes wrote:
Embed the mode in tinydrm_connector instead of doing an devm_
allocation.
Remove unnecessary use of ret variable at the end of
tinydrm_display_pipe_init().
Signed-off-by: Noralf Trønnes <nor...@tronnes.org>
---
drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c | 34
+++++++++++------------------
1 file changed, 13 insertions(+), 21 deletions(-)
diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c
b/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c
index f41fc506ff87..dadd26d53216 100644
--- a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c
+++ b/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c
@@ -15,7 +15,7 @@
struct tinydrm_connector {
struct drm_connector base;
- const struct drm_display_mode *mode;
+ struct drm_display_mode mode;
};
static inline struct tinydrm_connector *
@@ -29,7 +29,7 @@ static int tinydrm_connector_get_modes(struct
drm_connector *connector)
struct tinydrm_connector *tconn = to_tinydrm_connector(connector);
struct drm_display_mode *mode;
- mode = drm_mode_duplicate(connector->dev, tconn->mode);
+ mode = drm_mode_duplicate(connector->dev, &tconn->mode);
if (!mode) {
DRM_ERROR("Failed to duplicate mode\n");
return 0;
@@ -92,7 +92,7 @@ tinydrm_connector_create(struct drm_device *drm,
if (!tconn)
return ERR_PTR(-ENOMEM);
- tconn->mode = mode;
+ tconn->mode = *mode;
I see there is a special drm_mode_copy() function, so I am wondering
if this
is safe.
It is safe, the underlying drm_mode_object isn't initialized/registered.
So to me an assignment like this makes it clear that it is so, but Laurent
also asked about this, so maybe I'm the odd one here.
I'll switch to drm_mode_copy().
Noralf.
connector = &tconn->base;
drm_connector_helper_add(connector, &tinydrm_connector_hfuncs);
@@ -199,35 +199,27 @@ tinydrm_display_pipe_init(struct tinydrm_device
*tdev,
unsigned int rotation)
{
struct drm_device *drm = tdev->drm;
- struct drm_display_mode *mode_copy;
+ struct drm_display_mode mode_copy;
struct drm_connector *connector;
int ret;
- mode_copy = devm_kmalloc(drm->dev, sizeof(*mode_copy),
GFP_KERNEL);
- if (!mode_copy)
- return -ENOMEM;
-
- *mode_copy = *mode;
- ret = tinydrm_rotate_mode(mode_copy, rotation);
+ mode_copy = *mode;
Same here.
+ ret = tinydrm_rotate_mode(&mode_copy, rotation);
if (ret) {
DRM_ERROR("Illegal rotation value %u\n", rotation);
return -EINVAL;
}
- drm->mode_config.min_width = mode_copy->hdisplay;
- drm->mode_config.max_width = mode_copy->hdisplay;
- drm->mode_config.min_height = mode_copy->vdisplay;
- drm->mode_config.max_height = mode_copy->vdisplay;
+ drm->mode_config.min_width = mode_copy.hdisplay;
+ drm->mode_config.max_width = mode_copy.hdisplay;
+ drm->mode_config.min_height = mode_copy.vdisplay;
+ drm->mode_config.max_height = mode_copy.vdisplay;
- connector = tinydrm_connector_create(drm, mode_copy,
connector_type);
+ connector = tinydrm_connector_create(drm, &mode_copy,
connector_type);
if (IS_ERR(connector))
return PTR_ERR(connector);
- ret = drm_simple_display_pipe_init(drm, &tdev->pipe, funcs,
formats,
- format_count, NULL, connector);
- if (ret)
- return ret;
-
- return 0;
+ return drm_simple_display_pipe_init(drm, &tdev->pipe, funcs,
formats,
+ format_count, NULL, connector);
}
EXPORT_SYMBOL(tinydrm_display_pipe_init);
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