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drm/exynos: release resources properly when fb creation is failed.

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This patch releases allocated resources properly when
exynos_user_fb_create() is failed.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
This commit is contained in:
YoungJun Cho 2013-02-12 21:23:54 +09:00 committed by Inki Dae
parent 5af9f116e6
commit 979c0c7eb0
1 changed files with 27 additions and 24 deletions
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51
drivers/gpu/drm/exynos/exynos_drm_fb.c
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@ -221,23 +221,25 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
struct drm_mode_fb_cmd2 *mode_cmd)
{
struct drm_gem_object *obj;
struct exynos_drm_gem_obj *exynos_gem_obj;
struct exynos_drm_fb *exynos_fb;
int i, ret;
DRM_DEBUG_KMS("%s\n", __FILE__);
obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
if (!obj) {
DRM_ERROR("failed to lookup gem object\n");
return ERR_PTR(-ENOENT);
}
exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL);
if (!exynos_fb) {
DRM_ERROR("failed to allocate exynos drm framebuffer\n");
return ERR_PTR(-ENOMEM);
}
obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
if (!obj) {
DRM_ERROR("failed to lookup gem object\n");
ret = -ENOENT;
goto err_free;
}
drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd);
exynos_fb->exynos_gem_obj[0] = to_exynos_gem_obj(obj);
exynos_fb->buf_cnt = exynos_drm_format_num_buffers(mode_cmd);
@ -245,43 +247,44 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
DRM_DEBUG_KMS("buf_cnt = %d\n", exynos_fb->buf_cnt);
for (i = 1; i < exynos_fb->buf_cnt; i++) {
struct exynos_drm_gem_obj *exynos_gem_obj;
int ret;
obj = drm_gem_object_lookup(dev, file_priv,
mode_cmd->handles[i]);
if (!obj) {
DRM_ERROR("failed to lookup gem object\n");
kfree(exynos_fb);
return ERR_PTR(-ENOENT);
ret = -ENOENT;
exynos_fb->buf_cnt = i;
goto err_unreference;
}
exynos_gem_obj = to_exynos_gem_obj(obj);
exynos_fb->exynos_gem_obj[i] = exynos_gem_obj;
ret = check_fb_gem_memory_type(dev, exynos_gem_obj);
if (ret < 0) {
DRM_ERROR("cannot use this gem memory type for fb.\n");
kfree(exynos_fb);
return ERR_PTR(ret);
goto err_unreference;
}
exynos_fb->exynos_gem_obj[i] = to_exynos_gem_obj(obj);
}
ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs);
if (ret) {
for (i = 0; i < exynos_fb->buf_cnt; i++) {
struct exynos_drm_gem_obj *gem_obj;
gem_obj = exynos_fb->exynos_gem_obj[i];
drm_gem_object_unreference_unlocked(&gem_obj->base);
}
kfree(exynos_fb);
return ERR_PTR(ret);
DRM_ERROR("failed to init framebuffer.\n");
goto err_unreference;
}
return &exynos_fb->fb;
err_unreference:
for (i = 0; i < exynos_fb->buf_cnt; i++) {
struct drm_gem_object *obj;
obj = &exynos_fb->exynos_gem_obj[i]->base;
if (obj)
drm_gem_object_unreference_unlocked(obj);
}
err_free:
kfree(exynos_fb);
return ERR_PTR(ret);
}
struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb,