[PATCH] drm: fixup error path after drm_fill_in_dev

[Daniel Vetter]

Within drm_fill_in_dev we call drm_lastclose to clean up the dirt in
case of failures. But the callers of drm_fill_in_dev simply don't do
anything. Now from a cursory look drm_lastclose doesn't look like the
best cleanup function in itself, but whom am I to judge the drm error
paths. Imo before we could tackle this we need to move more of the
legacy drm services setup and teardown into the respective drivers,
that way drm_lastclose would become more manageble.

Anyway, make things at least consistent by adding drm_lastclose at the
right places in the error paths for all callers of drm_fill_in_dev.

v2: Fixup the error-path confusion in drm_usb.c, noticed by Jani
Nikula.

Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/drm_pci.c      |    8 +++++---
 drivers/gpu/drm/drm_platform.c |    8 +++++---
 drivers/gpu/drm/drm_usb.c      |    8 +++++---
 3 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c
index 73218ac..40737a8 100644
--- a/drivers/gpu/drm/drm_pci.c
+++ b/drivers/gpu/drm/drm_pci.c
@@ -334,14 +334,14 @@ int drm_get_pci_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
 
 	if ((ret = drm_fill_in_dev(dev, ent, driver))) {
 		printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
-		goto err_g2;
+		goto err_pci;
 	}
 
 	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 		pci_set_drvdata(pdev, dev);
 		ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
 		if (ret)
-			goto err_g2;
+			goto err_drm_fill_in;
 	}
 
 	if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
@@ -375,7 +375,9 @@ err_g4:
 err_g3:
 	if (drm_core_check_feature(dev, DRIVER_MODESET))
 		drm_put_minor(&dev->control);
-err_g2:
+err_drm_fill_in:
+	drm_lastclose(dev);
+err_pci:
 	pci_disable_device(pdev);
 err_g1:
 	kfree(dev);
diff --git a/drivers/gpu/drm/drm_platform.c b/drivers/gpu/drm/drm_platform.c
index 82431dc..177893a 100644
--- a/drivers/gpu/drm/drm_platform.c
+++ b/drivers/gpu/drm/drm_platform.c
@@ -60,14 +60,14 @@ int drm_get_platform_dev(struct platform_device *platdev,
 
 	if (ret) {
 		printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
-		goto err_g1;
+		goto err_kfree;
 	}
 
 	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 		dev_set_drvdata(&platdev->dev, dev);
 		ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
 		if (ret)
-			goto err_g1;
+			goto err_drm_fill_in;
 	}
 
 	ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY);
@@ -103,7 +103,9 @@ err_g3:
 err_g2:
 	if (drm_core_check_feature(dev, DRIVER_MODESET))
 		drm_put_minor(&dev->control);
-err_g1:
+err_drm_fill_in:
+	drm_lastclose(dev);
+err_kfree:
 	kfree(dev);
 	mutex_unlock(&drm_global_mutex);
 	return ret;
diff --git a/drivers/gpu/drm/drm_usb.c b/drivers/gpu/drm/drm_usb.c
index 37c9a52..f9d645f 100644
--- a/drivers/gpu/drm/drm_usb.c
+++ b/drivers/gpu/drm/drm_usb.c
@@ -25,13 +25,13 @@ int drm_get_usb_dev(struct usb_interface *interface,
 	ret = drm_fill_in_dev(dev, NULL, driver);
 	if (ret) {
 		printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
-		goto err_g1;
+		goto err_kfree;
 	}
 
 	usb_set_intfdata(interface, dev);
 	ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
 	if (ret)
-		goto err_g1;
+		goto err_drm_fill_in;
 
 	ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY);
 	if (ret)
@@ -63,7 +63,9 @@ err_g3:
 	drm_put_minor(&dev->primary);
 err_g2:
 	drm_put_minor(&dev->control);
-err_g1:
+err_drm_fill_in:
+	drm_lastclose(dev);
+err_kfree:
 	kfree(dev);
 	mutex_unlock(&drm_global_mutex);
 	return ret;
-- 
1.7.7.6