With this we can drop the final kfree from the release function.
I also noticed that the unwind code is wrong, after drm_dev_init the drm_device owns the v3d allocation, so the kfree(v3d) is a double-free. Reorder the setup to fix this issue.
After a bit more prep in drivers and drm core v3d should be able to switch over to devm_drm_dev_init, which should clean this up further.
Acked-by: Eric Anholt eric@anholt.net Signed-off-by: Daniel Vetter daniel.vetter@intel.com Cc: Eric Anholt eric@anholt.net --- drivers/gpu/drm/v3d/v3d_drv.c | 38 ++++++++++++++++++----------------- 1 file changed, 20 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c index eaa8e9682373..8d0c0daaac81 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.c +++ b/drivers/gpu/drm/v3d/v3d_drv.c @@ -25,6 +25,7 @@ #include <drm/drm_drv.h> #include <drm/drm_fb_cma_helper.h> #include <drm/drm_fb_helper.h> +#include <drm/drm_managed.h> #include <uapi/drm/v3d_drm.h>
#include "v3d_drv.h" @@ -257,13 +258,23 @@ static int v3d_platform_drm_probe(struct platform_device *pdev) v3d->pdev = pdev; drm = &v3d->drm;
+ ret = drm_dev_init(&v3d->drm, &v3d_drm_driver, dev); + if (ret) { + kfree(v3d); + return ret; + } + + platform_set_drvdata(pdev, drm); + drm->dev_private = v3d; + drmm_add_final_kfree(drm, v3d); + ret = map_regs(v3d, &v3d->hub_regs, "hub"); if (ret) - goto dev_free; + goto dev_destroy;
ret = map_regs(v3d, &v3d->core_regs[0], "core0"); if (ret) - goto dev_free; + goto dev_destroy;
mmu_debug = V3D_READ(V3D_MMU_DEBUG_INFO); dev->coherent_dma_mask = @@ -281,21 +292,21 @@ static int v3d_platform_drm_probe(struct platform_device *pdev) ret = PTR_ERR(v3d->reset);
if (ret == -EPROBE_DEFER) - goto dev_free; + goto dev_destroy;
v3d->reset = NULL; ret = map_regs(v3d, &v3d->bridge_regs, "bridge"); if (ret) { dev_err(dev, "Failed to get reset control or bridge regs\n"); - goto dev_free; + goto dev_destroy; } }
if (v3d->ver < 41) { ret = map_regs(v3d, &v3d->gca_regs, "gca"); if (ret) - goto dev_free; + goto dev_destroy; }
v3d->mmu_scratch = dma_alloc_wc(dev, 4096, &v3d->mmu_scratch_paddr, @@ -303,23 +314,16 @@ static int v3d_platform_drm_probe(struct platform_device *pdev) if (!v3d->mmu_scratch) { dev_err(dev, "Failed to allocate MMU scratch page\n"); ret = -ENOMEM; - goto dev_free; + goto dev_destroy; }
pm_runtime_use_autosuspend(dev); pm_runtime_set_autosuspend_delay(dev, 50); pm_runtime_enable(dev);
- ret = drm_dev_init(&v3d->drm, &v3d_drm_driver, dev); - if (ret) - goto dma_free; - - platform_set_drvdata(pdev, drm); - drm->dev_private = v3d; - ret = v3d_gem_init(drm); if (ret) - goto dev_destroy; + goto dma_free;
ret = v3d_irq_init(v3d); if (ret) @@ -335,12 +339,10 @@ static int v3d_platform_drm_probe(struct platform_device *pdev) v3d_irq_disable(v3d); gem_destroy: v3d_gem_destroy(drm); -dev_destroy: - drm_dev_put(drm); dma_free: dma_free_wc(dev, 4096, v3d->mmu_scratch, v3d->mmu_scratch_paddr); -dev_free: - kfree(v3d); +dev_destroy: + drm_dev_put(drm); return ret; }