diff options
-rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 23 | ||||
-rw-r--r-- | include/drm/drm_fb_helper.h | 5 |
2 files changed, 15 insertions, 13 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 165c8dab5079..02fc24026872 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -2170,6 +2170,8 @@ static const struct drm_client_funcs drm_fbdev_client_funcs = { * * This function sets up generic fbdev emulation for drivers that supports * dumb buffers with a virtual address and that can be mmap'ed. + * drm_fbdev_generic_setup() shall be called after the DRM driver registered + * the new DRM device with drm_dev_register(). * * Restore, hotplug events and teardown are all taken care of. Drivers that do * suspend/resume need to call drm_fb_helper_set_suspend_unlocked() themselves. @@ -2186,29 +2188,30 @@ static const struct drm_client_funcs drm_fbdev_client_funcs = { * Setup will be retried on the next hotplug event. * * The fbdev is destroyed by drm_dev_unregister(). - * - * Returns: - * Zero on success or negative error code on failure. */ -int drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp) +void drm_fbdev_generic_setup(struct drm_device *dev, + unsigned int preferred_bpp) { struct drm_fb_helper *fb_helper; int ret; - WARN(dev->fb_helper, "fb_helper is already set!\n"); + drm_WARN(dev, !dev->registered, "Device has not been registered.\n"); + drm_WARN(dev, dev->fb_helper, "fb_helper is already set!\n"); if (!drm_fbdev_emulation) - return 0; + return; fb_helper = kzalloc(sizeof(*fb_helper), GFP_KERNEL); - if (!fb_helper) - return -ENOMEM; + if (!fb_helper) { + drm_err(dev, "Failed to allocate fb_helper\n"); + return; + } ret = drm_client_init(dev, &fb_helper->client, "fbdev", &drm_fbdev_client_funcs); if (ret) { kfree(fb_helper); drm_err(dev, "Failed to register client: %d\n", ret); - return ret; + return; } if (!preferred_bpp) @@ -2222,8 +2225,6 @@ int drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp) drm_dbg_kms(dev, "client hotplug ret=%d\n", ret); drm_client_register(&fb_helper->client); - - return 0; } EXPORT_SYMBOL(drm_fbdev_generic_setup); diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index 208dbf87afa3..fb037be83997 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h @@ -269,7 +269,8 @@ int drm_fb_helper_debug_leave(struct fb_info *info); void drm_fb_helper_lastclose(struct drm_device *dev); void drm_fb_helper_output_poll_changed(struct drm_device *dev); -int drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp); +void drm_fbdev_generic_setup(struct drm_device *dev, + unsigned int preferred_bpp); #else static inline void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper, @@ -443,7 +444,7 @@ static inline void drm_fb_helper_output_poll_changed(struct drm_device *dev) { } -static inline int +static inline void drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp) { return 0; |