This is to avoid accessing uninitialized data during drm_irq_uninstall. At the same time, enable error check from drm_kms_init which previously appeared to ignore all errors.
Signed-off-by: Thomas Hellstrom thellstrom@vmware.com --- drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 46 +++++++++++++++++++---------------- drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c | 27 +++++++++++++------- 2 files changed, 42 insertions(+), 31 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index 76d7842..3d896b7 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -374,17 +374,6 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
dev->dev_private = dev_priv;
- if (!dev->devname) - dev->devname = vmw_devname; - - if (dev_priv->capabilities & SVGA_CAP_IRQMASK) { - ret = drm_irq_install(dev); - if (unlikely(ret != 0)) { - DRM_ERROR("Failed installing irq: %d\n", ret); - goto out_no_irq; - } - } - ret = pci_request_regions(dev->pdev, "vmwgfx probe"); dev_priv->stealth = (ret != 0); if (dev_priv->stealth) { @@ -400,7 +389,9 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset) goto out_no_device; } } - vmw_kms_init(dev_priv); + ret = vmw_kms_init(dev_priv); + if (unlikely(ret != 0)) + goto out_no_kms; vmw_overlay_init(dev_priv); if (dev_priv->enable_fb) { ret = vmw_3d_resource_inc(dev_priv); @@ -416,24 +407,37 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset) "running the device in SVGA mode yet.\n"); }
+ if (!dev->devname) + dev->devname = vmw_devname; + + if (dev_priv->capabilities & SVGA_CAP_IRQMASK) { + ret = drm_irq_install(dev); + if (unlikely(ret != 0)) { + DRM_ERROR("Failed installing irq: %d\n", ret); + goto out_no_irq; + } + } + dev_priv->pm_nb.notifier_call = vmwgfx_pm_notifier; register_pm_notifier(&dev_priv->pm_nb);
return 0;
+out_no_irq: + if (dev_priv->enable_fb) { + vmw_fb_close(dev_priv); + vmw_kms_restore_vga(dev_priv); + vmw_3d_resource_dec(dev_priv); + } out_no_fifo: vmw_overlay_close(dev_priv); vmw_kms_close(dev_priv); +out_no_kms: if (dev_priv->stealth) pci_release_region(dev->pdev, 2); else pci_release_regions(dev->pdev); out_no_device: - if (dev_priv->capabilities & SVGA_CAP_IRQMASK) - drm_irq_uninstall(dev_priv->dev); - if (dev->devname == vmw_devname) - dev->devname = NULL; -out_no_irq: ttm_object_device_release(&dev_priv->tdev); out_err4: iounmap(dev_priv->mmio_virt); @@ -460,6 +464,10 @@ static int vmw_driver_unload(struct drm_device *dev)
unregister_pm_notifier(&dev_priv->pm_nb);
+ if (dev_priv->capabilities & SVGA_CAP_IRQMASK) + drm_irq_uninstall(dev_priv->dev); + if (dev->devname == vmw_devname) + dev->devname = NULL; if (dev_priv->enable_fb) { vmw_fb_close(dev_priv); vmw_kms_restore_vga(dev_priv); @@ -472,10 +480,6 @@ static int vmw_driver_unload(struct drm_device *dev) else pci_release_regions(dev->pdev);
- if (dev_priv->capabilities & SVGA_CAP_IRQMASK) - drm_irq_uninstall(dev_priv->dev); - if (dev->devname == vmw_devname) - dev->devname = NULL; ttm_object_device_release(&dev_priv->tdev); iounmap(dev_priv->mmio_virt); drm_mtrr_del(dev_priv->mmio_mtrr, dev_priv->mmio_start, diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c index 2337e72..a01c47d 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c @@ -27,6 +27,8 @@
#include "vmwgfx_kms.h"
+#define VMWGFX_LDU_NUM_DU 8 + #define vmw_crtc_to_ldu(x) \ container_of(x, struct vmw_legacy_display_unit, base.crtc) #define vmw_encoder_to_ldu(x) \ @@ -546,6 +548,10 @@ static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv) { + struct drm_device *dev = dev_priv->dev; + int i; + int ret; + if (dev_priv->ldu_priv) { DRM_INFO("ldu system already on\n"); return -EINVAL; @@ -563,23 +569,24 @@ int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv)
drm_mode_create_dirty_info_property(dev_priv->dev);
- vmw_ldu_init(dev_priv, 0); - /* for old hardware without multimon only enable one display */ if (dev_priv->capabilities & SVGA_CAP_MULTIMON) { - vmw_ldu_init(dev_priv, 1); - vmw_ldu_init(dev_priv, 2); - vmw_ldu_init(dev_priv, 3); - vmw_ldu_init(dev_priv, 4); - vmw_ldu_init(dev_priv, 5); - vmw_ldu_init(dev_priv, 6); - vmw_ldu_init(dev_priv, 7); + for (i = 0; i < VMWGFX_LDU_NUM_DU; ++i) + vmw_ldu_init(dev_priv, i); + ret = drm_vblank_init(dev, VMWGFX_LDU_NUM_DU); + } else { + /* for old hardware without multimon only enable one display */ + vmw_ldu_init(dev_priv, 0); + ret = drm_vblank_init(dev, 1); }
- return 0; + return ret; }
int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv) { + struct drm_device *dev = dev_priv->dev; + + drm_vblank_cleanup(dev); if (!dev_priv->ldu_priv) return -ENOSYS;