diff options
Diffstat (limited to 'drivers/gpu/drm/drm_ioctl.c')
| -rw-r--r-- | drivers/gpu/drm/drm_ioctl.c | 61 |
1 files changed, 34 insertions, 27 deletions
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index 16829fb3089d..1fad76289e66 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -53,12 +53,13 @@ int drm_getunique(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_unique *u = data; + struct drm_master *master = file_priv->master; - if (u->unique_len >= dev->unique_len) { - if (copy_to_user(u->unique, dev->unique, dev->unique_len)) + if (u->unique_len >= master->unique_len) { + if (copy_to_user(u->unique, master->unique, master->unique_len)) return -EFAULT; } - u->unique_len = dev->unique_len; + u->unique_len = master->unique_len; return 0; } @@ -81,36 +82,38 @@ int drm_setunique(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_unique *u = data; + struct drm_master *master = file_priv->master; int domain, bus, slot, func, ret; - if (dev->unique_len || dev->unique) + if (master->unique_len || master->unique) return -EBUSY; if (!u->unique_len || u->unique_len > 1024) return -EINVAL; - dev->unique_len = u->unique_len; - dev->unique = drm_alloc(u->unique_len + 1, DRM_MEM_DRIVER); - if (!dev->unique) + master->unique_len = u->unique_len; + master->unique_size = u->unique_len + 1; + master->unique = drm_alloc(master->unique_size, DRM_MEM_DRIVER); + if (!master->unique) return -ENOMEM; - if (copy_from_user(dev->unique, u->unique, dev->unique_len)) + if (copy_from_user(master->unique, u->unique, master->unique_len)) return -EFAULT; - dev->unique[dev->unique_len] = '\0'; + master->unique[master->unique_len] = '\0'; dev->devname = drm_alloc(strlen(dev->driver->pci_driver.name) + - strlen(dev->unique) + 2, DRM_MEM_DRIVER); + strlen(master->unique) + 2, DRM_MEM_DRIVER); if (!dev->devname) return -ENOMEM; sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name, - dev->unique); + master->unique); /* Return error if the busid submitted doesn't match the device's actual * busid. */ - ret = sscanf(dev->unique, "PCI:%d:%d:%d", &bus, &slot, &func); + ret = sscanf(master->unique, "PCI:%d:%d:%d", &bus, &slot, &func); if (ret != 3) return -EINVAL; domain = bus >> 8; @@ -125,34 +128,38 @@ int drm_setunique(struct drm_device *dev, void *data, return 0; } -static int drm_set_busid(struct drm_device * dev) +static int drm_set_busid(struct drm_device *dev, struct drm_file *file_priv) { + struct drm_master *master = file_priv->master; int len; - if (dev->unique != NULL) - return 0; + if (master->unique != NULL) + return -EBUSY; - dev->unique_len = 40; - dev->unique = drm_alloc(dev->unique_len + 1, DRM_MEM_DRIVER); - if (dev->unique == NULL) + master->unique_len = 40; + master->unique_size = master->unique_len; + master->unique = drm_alloc(master->unique_size, DRM_MEM_DRIVER); + if (master->unique == NULL) return -ENOMEM; - len = snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%d", - drm_get_pci_domain(dev), dev->pdev->bus->number, + len = snprintf(master->unique, master->unique_len, "pci:%04x:%02x:%02x.%d", + drm_get_pci_domain(dev), + dev->pdev->bus->number, PCI_SLOT(dev->pdev->devfn), PCI_FUNC(dev->pdev->devfn)); - - if (len > dev->unique_len) - DRM_ERROR("Unique buffer overflowed\n"); + if (len >= master->unique_len) + DRM_ERROR("buffer overflow"); + else + master->unique_len = len; dev->devname = - drm_alloc(strlen(dev->driver->pci_driver.name) + dev->unique_len + + drm_alloc(strlen(dev->driver->pci_driver.name) + master->unique_len + 2, DRM_MEM_DRIVER); if (dev->devname == NULL) return -ENOMEM; sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name, - dev->unique); + master->unique); return 0; } @@ -276,7 +283,7 @@ int drm_getstats(struct drm_device *dev, void *data, for (i = 0; i < dev->counters; i++) { if (dev->types[i] == _DRM_STAT_LOCK) stats->data[i].value = - (dev->lock.hw_lock ? dev->lock.hw_lock->lock : 0); + (file_priv->master->lock.hw_lock ? file_priv->master->lock.hw_lock->lock : 0); else stats->data[i].value = atomic_read(&dev->counts[i]); stats->data[i].type = dev->types[i]; @@ -318,7 +325,7 @@ int drm_setversion(struct drm_device *dev, void *data, struct drm_file *file_pri /* * Version 1.1 includes tying of DRM to specific device */ - drm_set_busid(dev); + drm_set_busid(dev, file_priv); } } |