| Message ID | 20191028121610.3889207-1-thierry.reding@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v3] drm/tegra: Do not use ->load() and ->unload() callbacks | expand |
28.10.2019 15:16, Thierry Reding пишет: > From: Thierry Reding <treding@nvidia.com> > > The ->load() and ->unload() drivers are midlayers and should be avoided > in modern drivers. Fix this by moving the code into the driver ->probe() > and ->remove() implementations, respectively. > > v2: kick out conflicting framebuffers before initializing fbdev > v3: rebase onto drm/tegra/for-next > > Signed-off-by: Thierry Reding <treding@nvidia.com> > --- > drivers/gpu/drm/tegra/drm.c | 321 +++++++++++++++++------------------- > 1 file changed, 154 insertions(+), 167 deletions(-) Hello Thierry, I tried a bit harder and managed to get simple-framebuffer working, the bootloader's FB handover works fine for me before and after this patch. Thanks! Tested-by: Dmitry Osipenko <digetx@gmail.com>
On Mon, Oct 28, 2019 at 01:16:10PM +0100, Thierry Reding wrote: > From: Thierry Reding <treding@nvidia.com> > > The ->load() and ->unload() drivers are midlayers and should be avoided > in modern drivers. Fix this by moving the code into the driver ->probe() > and ->remove() implementations, respectively. > > v2: kick out conflicting framebuffers before initializing fbdev > v3: rebase onto drm/tegra/for-next > > Signed-off-by: Thierry Reding <treding@nvidia.com> My for v2 seems to have been lost, so: Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> > --- > drivers/gpu/drm/tegra/drm.c | 321 +++++++++++++++++------------------- > 1 file changed, 154 insertions(+), 167 deletions(-) > > diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c > index b74362cb63eb..7480f575188d 100644 > --- a/drivers/gpu/drm/tegra/drm.c > +++ b/drivers/gpu/drm/tegra/drm.c > @@ -86,168 +86,6 @@ tegra_drm_mode_config_helpers = { > .atomic_commit_tail = tegra_atomic_commit_tail, > }; > > -static int tegra_drm_load(struct drm_device *drm, unsigned long flags) > -{ > - struct host1x_device *device = to_host1x_device(drm->dev); > - struct tegra_drm *tegra; > - int err; > - > - tegra = kzalloc(sizeof(*tegra), GFP_KERNEL); > - if (!tegra) > - return -ENOMEM; > - > - if (iommu_present(&platform_bus_type)) { > - tegra->domain = iommu_domain_alloc(&platform_bus_type); > - if (!tegra->domain) { > - err = -ENOMEM; > - goto free; > - } > - > - err = iova_cache_get(); > - if (err < 0) > - goto domain; > - } > - > - mutex_init(&tegra->clients_lock); > - INIT_LIST_HEAD(&tegra->clients); > - > - drm->dev_private = tegra; > - tegra->drm = drm; > - > - drm_mode_config_init(drm); > - > - drm->mode_config.min_width = 0; > - drm->mode_config.min_height = 0; > - > - drm->mode_config.max_width = 4096; > - drm->mode_config.max_height = 4096; > - > - drm->mode_config.allow_fb_modifiers = true; > - > - drm->mode_config.normalize_zpos = true; > - > - drm->mode_config.funcs = &tegra_drm_mode_config_funcs; > - drm->mode_config.helper_private = &tegra_drm_mode_config_helpers; > - > - err = tegra_drm_fb_prepare(drm); > - if (err < 0) > - goto config; > - > - drm_kms_helper_poll_init(drm); > - > - err = host1x_device_init(device); > - if (err < 0) > - goto fbdev; > - > - if (tegra->domain) { > - u64 carveout_start, carveout_end, gem_start, gem_end; > - u64 dma_mask = dma_get_mask(&device->dev); > - dma_addr_t start, end; > - unsigned long order; > - > - start = tegra->domain->geometry.aperture_start & dma_mask; > - end = tegra->domain->geometry.aperture_end & dma_mask; > - > - gem_start = start; > - gem_end = end - CARVEOUT_SZ; > - carveout_start = gem_end + 1; > - carveout_end = end; > - > - order = __ffs(tegra->domain->pgsize_bitmap); > - init_iova_domain(&tegra->carveout.domain, 1UL << order, > - carveout_start >> order); > - > - tegra->carveout.shift = iova_shift(&tegra->carveout.domain); > - tegra->carveout.limit = carveout_end >> tegra->carveout.shift; > - > - drm_mm_init(&tegra->mm, gem_start, gem_end - gem_start + 1); > - mutex_init(&tegra->mm_lock); > - > - DRM_DEBUG_DRIVER("IOMMU apertures:\n"); > - DRM_DEBUG_DRIVER(" GEM: %#llx-%#llx\n", gem_start, gem_end); > - DRM_DEBUG_DRIVER(" Carveout: %#llx-%#llx\n", carveout_start, > - carveout_end); > - } > - > - if (tegra->hub) { > - err = tegra_display_hub_prepare(tegra->hub); > - if (err < 0) > - goto device; > - } > - > - /* > - * We don't use the drm_irq_install() helpers provided by the DRM > - * core, so we need to set this manually in order to allow the > - * DRM_IOCTL_WAIT_VBLANK to operate correctly. > - */ > - drm->irq_enabled = true; > - > - /* syncpoints are used for full 32-bit hardware VBLANK counters */ > - drm->max_vblank_count = 0xffffffff; > - > - err = drm_vblank_init(drm, drm->mode_config.num_crtc); > - if (err < 0) > - goto hub; > - > - drm_mode_config_reset(drm); > - > - err = tegra_drm_fb_init(drm); > - if (err < 0) > - goto hub; > - > - return 0; > - > -hub: > - if (tegra->hub) > - tegra_display_hub_cleanup(tegra->hub); > -device: > - if (tegra->domain) { > - mutex_destroy(&tegra->mm_lock); > - drm_mm_takedown(&tegra->mm); > - put_iova_domain(&tegra->carveout.domain); > - iova_cache_put(); > - } > - > - host1x_device_exit(device); > -fbdev: > - drm_kms_helper_poll_fini(drm); > - tegra_drm_fb_free(drm); > -config: > - drm_mode_config_cleanup(drm); > -domain: > - if (tegra->domain) > - iommu_domain_free(tegra->domain); > -free: > - kfree(tegra); > - return err; > -} > - > -static void tegra_drm_unload(struct drm_device *drm) > -{ > - struct host1x_device *device = to_host1x_device(drm->dev); > - struct tegra_drm *tegra = drm->dev_private; > - int err; > - > - drm_kms_helper_poll_fini(drm); > - tegra_drm_fb_exit(drm); > - drm_atomic_helper_shutdown(drm); > - drm_mode_config_cleanup(drm); > - > - err = host1x_device_exit(device); > - if (err < 0) > - return; > - > - if (tegra->domain) { > - mutex_destroy(&tegra->mm_lock); > - drm_mm_takedown(&tegra->mm); > - put_iova_domain(&tegra->carveout.domain); > - iova_cache_put(); > - iommu_domain_free(tegra->domain); > - } > - > - kfree(tegra); > -} > - > static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp) > { > struct tegra_drm_file *fpriv; > @@ -1014,8 +852,6 @@ static int tegra_debugfs_init(struct drm_minor *minor) > static struct drm_driver tegra_drm_driver = { > .driver_features = DRIVER_MODESET | DRIVER_GEM | > DRIVER_ATOMIC | DRIVER_RENDER, > - .load = tegra_drm_load, > - .unload = tegra_drm_unload, > .open = tegra_drm_open, > .postclose = tegra_drm_postclose, > .lastclose = drm_fb_helper_lastclose, > @@ -1202,6 +1038,7 @@ void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt, > static int host1x_drm_probe(struct host1x_device *dev) > { > struct drm_driver *driver = &tegra_drm_driver; > + struct tegra_drm *tegra; > struct drm_device *drm; > int err; > > @@ -1209,18 +1046,147 @@ static int host1x_drm_probe(struct host1x_device *dev) > if (IS_ERR(drm)) > return PTR_ERR(drm); > > + tegra = kzalloc(sizeof(*tegra), GFP_KERNEL); > + if (!tegra) { > + err = -ENOMEM; > + goto put; > + } > + > + if (iommu_present(&platform_bus_type)) { > + tegra->domain = iommu_domain_alloc(&platform_bus_type); > + if (!tegra->domain) { > + err = -ENOMEM; > + goto free; > + } > + > + err = iova_cache_get(); > + if (err < 0) > + goto domain; > + } > + > + mutex_init(&tegra->clients_lock); > + INIT_LIST_HEAD(&tegra->clients); > + > dev_set_drvdata(&dev->dev, drm); > + drm->dev_private = tegra; > + tegra->drm = drm; > + > + drm_mode_config_init(drm); > + > + drm->mode_config.min_width = 0; > + drm->mode_config.min_height = 0; > + > + drm->mode_config.max_width = 4096; > + drm->mode_config.max_height = 4096; > + > + drm->mode_config.allow_fb_modifiers = true; > + > + drm->mode_config.normalize_zpos = true; > > - err = drm_fb_helper_remove_conflicting_framebuffers(NULL, "tegradrmfb", false); > + drm->mode_config.funcs = &tegra_drm_mode_config_funcs; > + drm->mode_config.helper_private = &tegra_drm_mode_config_helpers; > + > + err = tegra_drm_fb_prepare(drm); > if (err < 0) > - goto put; > + goto config; > + > + drm_kms_helper_poll_init(drm); > + > + err = host1x_device_init(dev); > + if (err < 0) > + goto fbdev; > + > + if (tegra->domain) { > + u64 carveout_start, carveout_end, gem_start, gem_end; > + u64 dma_mask = dma_get_mask(&dev->dev); > + dma_addr_t start, end; > + unsigned long order; > + > + start = tegra->domain->geometry.aperture_start & dma_mask; > + end = tegra->domain->geometry.aperture_end & dma_mask; > + > + gem_start = start; > + gem_end = end - CARVEOUT_SZ; > + carveout_start = gem_end + 1; > + carveout_end = end; > + > + order = __ffs(tegra->domain->pgsize_bitmap); > + init_iova_domain(&tegra->carveout.domain, 1UL << order, > + carveout_start >> order); > + > + tegra->carveout.shift = iova_shift(&tegra->carveout.domain); > + tegra->carveout.limit = carveout_end >> tegra->carveout.shift; > + > + drm_mm_init(&tegra->mm, gem_start, gem_end - gem_start + 1); > + mutex_init(&tegra->mm_lock); > + > + DRM_DEBUG_DRIVER("IOMMU apertures:\n"); > + DRM_DEBUG_DRIVER(" GEM: %#llx-%#llx\n", gem_start, gem_end); > + DRM_DEBUG_DRIVER(" Carveout: %#llx-%#llx\n", carveout_start, > + carveout_end); > + } > + > + if (tegra->hub) { > + err = tegra_display_hub_prepare(tegra->hub); > + if (err < 0) > + goto device; > + } > + > + /* > + * We don't use the drm_irq_install() helpers provided by the DRM > + * core, so we need to set this manually in order to allow the > + * DRM_IOCTL_WAIT_VBLANK to operate correctly. > + */ > + drm->irq_enabled = true; > + > + /* syncpoints are used for full 32-bit hardware VBLANK counters */ > + drm->max_vblank_count = 0xffffffff; > + > + err = drm_vblank_init(drm, drm->mode_config.num_crtc); > + if (err < 0) > + goto hub; > + > + drm_mode_config_reset(drm); > + > + err = drm_fb_helper_remove_conflicting_framebuffers(NULL, "tegradrmfb", > + false); > + if (err < 0) > + goto hub; > + > + err = tegra_drm_fb_init(drm); > + if (err < 0) > + goto hub; > > err = drm_dev_register(drm, 0); > if (err < 0) > - goto put; > + goto fb; > > return 0; > > +fb: > + tegra_drm_fb_exit(drm); > +hub: > + if (tegra->hub) > + tegra_display_hub_cleanup(tegra->hub); > +device: > + if (tegra->domain) { > + mutex_destroy(&tegra->mm_lock); > + drm_mm_takedown(&tegra->mm); > + put_iova_domain(&tegra->carveout.domain); > + iova_cache_put(); > + } > + > + host1x_device_exit(dev); > +fbdev: > + drm_kms_helper_poll_fini(drm); > + tegra_drm_fb_free(drm); > +config: > + drm_mode_config_cleanup(drm); > +domain: > + if (tegra->domain) > + iommu_domain_free(tegra->domain); > +free: > + kfree(tegra); > put: > drm_dev_put(drm); > return err; > @@ -1229,8 +1195,29 @@ static int host1x_drm_probe(struct host1x_device *dev) > static int host1x_drm_remove(struct host1x_device *dev) > { > struct drm_device *drm = dev_get_drvdata(&dev->dev); > + struct tegra_drm *tegra = drm->dev_private; > + int err; > > drm_dev_unregister(drm); > + > + drm_kms_helper_poll_fini(drm); > + tegra_drm_fb_exit(drm); > + drm_atomic_helper_shutdown(drm); > + drm_mode_config_cleanup(drm); > + > + err = host1x_device_exit(dev); > + if (err < 0) > + dev_err(&dev->dev, "host1x device cleanup failed: %d\n", err); > + > + if (tegra->domain) { > + mutex_destroy(&tegra->mm_lock); > + drm_mm_takedown(&tegra->mm); > + put_iova_domain(&tegra->carveout.domain); > + iova_cache_put(); > + iommu_domain_free(tegra->domain); > + } > + > + kfree(tegra); > drm_dev_put(drm); > > return 0; > -- > 2.23.0 >
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index b74362cb63eb..7480f575188d 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -86,168 +86,6 @@ tegra_drm_mode_config_helpers = { .atomic_commit_tail = tegra_atomic_commit_tail, }; -static int tegra_drm_load(struct drm_device *drm, unsigned long flags) -{ - struct host1x_device *device = to_host1x_device(drm->dev); - struct tegra_drm *tegra; - int err; - - tegra = kzalloc(sizeof(*tegra), GFP_KERNEL); - if (!tegra) - return -ENOMEM; - - if (iommu_present(&platform_bus_type)) { - tegra->domain = iommu_domain_alloc(&platform_bus_type); - if (!tegra->domain) { - err = -ENOMEM; - goto free; - } - - err = iova_cache_get(); - if (err < 0) - goto domain; - } - - mutex_init(&tegra->clients_lock); - INIT_LIST_HEAD(&tegra->clients); - - drm->dev_private = tegra; - tegra->drm = drm; - - drm_mode_config_init(drm); - - drm->mode_config.min_width = 0; - drm->mode_config.min_height = 0; - - drm->mode_config.max_width = 4096; - drm->mode_config.max_height = 4096; - - drm->mode_config.allow_fb_modifiers = true; - - drm->mode_config.normalize_zpos = true; - - drm->mode_config.funcs = &tegra_drm_mode_config_funcs; - drm->mode_config.helper_private = &tegra_drm_mode_config_helpers; - - err = tegra_drm_fb_prepare(drm); - if (err < 0) - goto config; - - drm_kms_helper_poll_init(drm); - - err = host1x_device_init(device); - if (err < 0) - goto fbdev; - - if (tegra->domain) { - u64 carveout_start, carveout_end, gem_start, gem_end; - u64 dma_mask = dma_get_mask(&device->dev); - dma_addr_t start, end; - unsigned long order; - - start = tegra->domain->geometry.aperture_start & dma_mask; - end = tegra->domain->geometry.aperture_end & dma_mask; - - gem_start = start; - gem_end = end - CARVEOUT_SZ; - carveout_start = gem_end + 1; - carveout_end = end; - - order = __ffs(tegra->domain->pgsize_bitmap); - init_iova_domain(&tegra->carveout.domain, 1UL << order, - carveout_start >> order); - - tegra->carveout.shift = iova_shift(&tegra->carveout.domain); - tegra->carveout.limit = carveout_end >> tegra->carveout.shift; - - drm_mm_init(&tegra->mm, gem_start, gem_end - gem_start + 1); - mutex_init(&tegra->mm_lock); - - DRM_DEBUG_DRIVER("IOMMU apertures:\n"); - DRM_DEBUG_DRIVER(" GEM: %#llx-%#llx\n", gem_start, gem_end); - DRM_DEBUG_DRIVER(" Carveout: %#llx-%#llx\n", carveout_start, - carveout_end); - } - - if (tegra->hub) { - err = tegra_display_hub_prepare(tegra->hub); - if (err < 0) - goto device; - } - - /* - * We don't use the drm_irq_install() helpers provided by the DRM - * core, so we need to set this manually in order to allow the - * DRM_IOCTL_WAIT_VBLANK to operate correctly. - */ - drm->irq_enabled = true; - - /* syncpoints are used for full 32-bit hardware VBLANK counters */ - drm->max_vblank_count = 0xffffffff; - - err = drm_vblank_init(drm, drm->mode_config.num_crtc); - if (err < 0) - goto hub; - - drm_mode_config_reset(drm); - - err = tegra_drm_fb_init(drm); - if (err < 0) - goto hub; - - return 0; - -hub: - if (tegra->hub) - tegra_display_hub_cleanup(tegra->hub); -device: - if (tegra->domain) { - mutex_destroy(&tegra->mm_lock); - drm_mm_takedown(&tegra->mm); - put_iova_domain(&tegra->carveout.domain); - iova_cache_put(); - } - - host1x_device_exit(device); -fbdev: - drm_kms_helper_poll_fini(drm); - tegra_drm_fb_free(drm); -config: - drm_mode_config_cleanup(drm); -domain: - if (tegra->domain) - iommu_domain_free(tegra->domain); -free: - kfree(tegra); - return err; -} - -static void tegra_drm_unload(struct drm_device *drm) -{ - struct host1x_device *device = to_host1x_device(drm->dev); - struct tegra_drm *tegra = drm->dev_private; - int err; - - drm_kms_helper_poll_fini(drm); - tegra_drm_fb_exit(drm); - drm_atomic_helper_shutdown(drm); - drm_mode_config_cleanup(drm); - - err = host1x_device_exit(device); - if (err < 0) - return; - - if (tegra->domain) { - mutex_destroy(&tegra->mm_lock); - drm_mm_takedown(&tegra->mm); - put_iova_domain(&tegra->carveout.domain); - iova_cache_put(); - iommu_domain_free(tegra->domain); - } - - kfree(tegra); -} - static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp) { struct tegra_drm_file *fpriv; @@ -1014,8 +852,6 @@ static int tegra_debugfs_init(struct drm_minor *minor) static struct drm_driver tegra_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC | DRIVER_RENDER, - .load = tegra_drm_load, - .unload = tegra_drm_unload, .open = tegra_drm_open, .postclose = tegra_drm_postclose, .lastclose = drm_fb_helper_lastclose, @@ -1202,6 +1038,7 @@ void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt, static int host1x_drm_probe(struct host1x_device *dev) { struct drm_driver *driver = &tegra_drm_driver; + struct tegra_drm *tegra; struct drm_device *drm; int err; @@ -1209,18 +1046,147 @@ static int host1x_drm_probe(struct host1x_device *dev) if (IS_ERR(drm)) return PTR_ERR(drm); + tegra = kzalloc(sizeof(*tegra), GFP_KERNEL); + if (!tegra) { + err = -ENOMEM; + goto put; + } + + if (iommu_present(&platform_bus_type)) { + tegra->domain = iommu_domain_alloc(&platform_bus_type); + if (!tegra->domain) { + err = -ENOMEM; + goto free; + } + + err = iova_cache_get(); + if (err < 0) + goto domain; + } + + mutex_init(&tegra->clients_lock); + INIT_LIST_HEAD(&tegra->clients); + dev_set_drvdata(&dev->dev, drm); + drm->dev_private = tegra; + tegra->drm = drm; + + drm_mode_config_init(drm); + + drm->mode_config.min_width = 0; + drm->mode_config.min_height = 0; + + drm->mode_config.max_width = 4096; + drm->mode_config.max_height = 4096; + + drm->mode_config.allow_fb_modifiers = true; + + drm->mode_config.normalize_zpos = true; - err = drm_fb_helper_remove_conflicting_framebuffers(NULL, "tegradrmfb", false); + drm->mode_config.funcs = &tegra_drm_mode_config_funcs; + drm->mode_config.helper_private = &tegra_drm_mode_config_helpers; + + err = tegra_drm_fb_prepare(drm); if (err < 0) - goto put; + goto config; + + drm_kms_helper_poll_init(drm); + + err = host1x_device_init(dev); + if (err < 0) + goto fbdev; + + if (tegra->domain) { + u64 carveout_start, carveout_end, gem_start, gem_end; + u64 dma_mask = dma_get_mask(&dev->dev); + dma_addr_t start, end; + unsigned long order; + + start = tegra->domain->geometry.aperture_start & dma_mask; + end = tegra->domain->geometry.aperture_end & dma_mask; + + gem_start = start; + gem_end = end - CARVEOUT_SZ; + carveout_start = gem_end + 1; + carveout_end = end; + + order = __ffs(tegra->domain->pgsize_bitmap); + init_iova_domain(&tegra->carveout.domain, 1UL << order, + carveout_start >> order); + + tegra->carveout.shift = iova_shift(&tegra->carveout.domain); + tegra->carveout.limit = carveout_end >> tegra->carveout.shift; + + drm_mm_init(&tegra->mm, gem_start, gem_end - gem_start + 1); + mutex_init(&tegra->mm_lock); + + DRM_DEBUG_DRIVER("IOMMU apertures:\n"); + DRM_DEBUG_DRIVER(" GEM: %#llx-%#llx\n", gem_start, gem_end); + DRM_DEBUG_DRIVER(" Carveout: %#llx-%#llx\n", carveout_start, + carveout_end); + } + + if (tegra->hub) { + err = tegra_display_hub_prepare(tegra->hub); + if (err < 0) + goto device; + } + + /* + * We don't use the drm_irq_install() helpers provided by the DRM + * core, so we need to set this manually in order to allow the + * DRM_IOCTL_WAIT_VBLANK to operate correctly. + */ + drm->irq_enabled = true; + + /* syncpoints are used for full 32-bit hardware VBLANK counters */ + drm->max_vblank_count = 0xffffffff; + + err = drm_vblank_init(drm, drm->mode_config.num_crtc); + if (err < 0) + goto hub; + + drm_mode_config_reset(drm); + + err = drm_fb_helper_remove_conflicting_framebuffers(NULL, "tegradrmfb", + false); + if (err < 0) + goto hub; + + err = tegra_drm_fb_init(drm); + if (err < 0) + goto hub; err = drm_dev_register(drm, 0); if (err < 0) - goto put; + goto fb; return 0; +fb: + tegra_drm_fb_exit(drm); +hub: + if (tegra->hub) + tegra_display_hub_cleanup(tegra->hub); +device: + if (tegra->domain) { + mutex_destroy(&tegra->mm_lock); + drm_mm_takedown(&tegra->mm); + put_iova_domain(&tegra->carveout.domain); + iova_cache_put(); + } + + host1x_device_exit(dev); +fbdev: + drm_kms_helper_poll_fini(drm); + tegra_drm_fb_free(drm); +config: + drm_mode_config_cleanup(drm); +domain: + if (tegra->domain) + iommu_domain_free(tegra->domain); +free: + kfree(tegra); put: drm_dev_put(drm); return err; @@ -1229,8 +1195,29 @@ static int host1x_drm_probe(struct host1x_device *dev) static int host1x_drm_remove(struct host1x_device *dev) { struct drm_device *drm = dev_get_drvdata(&dev->dev); + struct tegra_drm *tegra = drm->dev_private; + int err; drm_dev_unregister(drm); + + drm_kms_helper_poll_fini(drm); + tegra_drm_fb_exit(drm); + drm_atomic_helper_shutdown(drm); + drm_mode_config_cleanup(drm); + + err = host1x_device_exit(dev); + if (err < 0) + dev_err(&dev->dev, "host1x device cleanup failed: %d\n", err); + + if (tegra->domain) { + mutex_destroy(&tegra->mm_lock); + drm_mm_takedown(&tegra->mm); + put_iova_domain(&tegra->carveout.domain); + iova_cache_put(); + iommu_domain_free(tegra->domain); + } + + kfree(tegra); drm_dev_put(drm); return 0;