Remove the general drm_device_is_unplugged() checks, and move the unplugged flag handling logic into drm/udl. In general we want to keep driver-specific logic out of common drm code.
Signed-off-by: Haixia Shi hshi@chromium.org Reviewed-by: Stéphane Marchesin marcheu@chromium.org --- drivers/gpu/drm/drm_drv.c | 6 ------ drivers/gpu/drm/drm_fops.c | 2 -- drivers/gpu/drm/drm_gem.c | 3 --- drivers/gpu/drm/drm_ioctl.c | 3 --- drivers/gpu/drm/drm_vm.c | 3 --- drivers/gpu/drm/udl/udl_connector.c | 2 +- drivers/gpu/drm/udl/udl_drv.c | 1 + drivers/gpu/drm/udl/udl_drv.h | 3 +++ drivers/gpu/drm/udl/udl_fb.c | 2 +- drivers/gpu/drm/udl/udl_main.c | 15 +++++++++++++++ include/drm/drmP.h | 14 -------------- 11 files changed, 21 insertions(+), 33 deletions(-)
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 167c8d3..f93ee12 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -376,9 +376,6 @@ struct drm_minor *drm_minor_acquire(unsigned int minor_id)
if (!minor) { return ERR_PTR(-ENODEV); - } else if (drm_device_is_unplugged(minor->dev)) { - drm_dev_unref(minor->dev); - return ERR_PTR(-ENODEV); }
return minor; @@ -464,9 +461,6 @@ void drm_unplug_dev(struct drm_device *dev) drm_minor_unregister(dev, DRM_MINOR_CONTROL);
mutex_lock(&drm_global_mutex); - - drm_device_set_unplugged(dev); - if (dev->open_count == 0) { drm_put_dev(dev); } diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c index 1ea8790..b4332d4 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -497,8 +497,6 @@ int drm_release(struct inode *inode, struct file *filp)
if (!--dev->open_count) { retcode = drm_lastclose(dev); - if (drm_device_is_unplugged(dev)) - drm_put_dev(dev); } mutex_unlock(&drm_global_mutex);
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c index 2e8c77e..c622e32 100644 --- a/drivers/gpu/drm/drm_gem.c +++ b/drivers/gpu/drm/drm_gem.c @@ -900,9 +900,6 @@ int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) struct drm_vma_offset_node *node; int ret;
- if (drm_device_is_unplugged(dev)) - return -ENODEV; - drm_vma_offset_lock_lookup(dev->vma_offset_manager); node = drm_vma_offset_exact_lookup_locked(dev->vma_offset_manager, vma->vm_pgoff, diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index 8ce2a0c..f959074 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -695,9 +695,6 @@ long drm_ioctl(struct file *filp,
dev = file_priv->minor->dev;
- if (drm_device_is_unplugged(dev)) - return -ENODEV; - is_driver_ioctl = nr >= DRM_COMMAND_BASE && nr < DRM_COMMAND_END;
if (is_driver_ioctl) { diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c index f90bd5f..3a68be4 100644 --- a/drivers/gpu/drm/drm_vm.c +++ b/drivers/gpu/drm/drm_vm.c @@ -657,9 +657,6 @@ int drm_legacy_mmap(struct file *filp, struct vm_area_struct *vma) struct drm_device *dev = priv->minor->dev; int ret;
- if (drm_device_is_unplugged(dev)) - return -ENODEV; - mutex_lock(&dev->struct_mutex); ret = drm_mmap_locked(filp, vma); mutex_unlock(&dev->struct_mutex); diff --git a/drivers/gpu/drm/udl/udl_connector.c b/drivers/gpu/drm/udl/udl_connector.c index 4709b54..b168f2c 100644 --- a/drivers/gpu/drm/udl/udl_connector.c +++ b/drivers/gpu/drm/udl/udl_connector.c @@ -96,7 +96,7 @@ static int udl_mode_valid(struct drm_connector *connector, static enum drm_connector_status udl_detect(struct drm_connector *connector, bool force) { - if (drm_device_is_unplugged(connector->dev)) + if (udl_device_is_unplugged(connector->dev)) return connector_status_disconnected; return connector_status_connected; } diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index d5728ec..3cbafe7 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -97,6 +97,7 @@ static void udl_usb_disconnect(struct usb_interface *interface) drm_connector_unplug_all(dev); udl_fbdev_unplug(dev); udl_drop_usb(dev); + udl_device_set_unplugged(dev); drm_unplug_dev(dev); }
diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h index 4a064ef..61e117a 100644 --- a/drivers/gpu/drm/udl/udl_drv.h +++ b/drivers/gpu/drm/udl/udl_drv.h @@ -65,6 +65,7 @@ struct udl_device { atomic_t bytes_identical; /* saved effort with backbuffer comparison */ atomic_t bytes_sent; /* to usb, after compression including overhead */ atomic_t cpu_kcycles_used; /* transpired during pixel processing */ + atomic_t unplugged; /* device has been unplugged or gone away */ };
struct udl_gem_object { @@ -140,6 +141,8 @@ int udl_handle_damage(struct udl_framebuffer *fb, int x, int y, int width, int height);
int udl_drop_usb(struct drm_device *dev); +void udl_device_set_unplugged(struct drm_device *dev); +int udl_device_is_unplugged(struct drm_device *dev);
#define CMD_WRITE_RAW8 "\xAF\x60" /**< 8 bit raw write command. */ #define CMD_WRITE_RL8 "\xAF\x61" /**< 8 bit run length command. */ diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c index 200419d..df1d53e 100644 --- a/drivers/gpu/drm/udl/udl_fb.c +++ b/drivers/gpu/drm/udl/udl_fb.c @@ -325,7 +325,7 @@ static int udl_fb_open(struct fb_info *info, int user) struct udl_device *udl = dev->dev_private;
/* If the USB device is gone, we don't accept new opens */ - if (drm_device_is_unplugged(udl->ddev)) + if (udl_device_is_unplugged(udl->ddev)) return -ENODEV;
ufbdev->fb_count++; diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c index 33dbfb2..f6028a4 100644 --- a/drivers/gpu/drm/udl/udl_main.c +++ b/drivers/gpu/drm/udl/udl_main.c @@ -350,3 +350,18 @@ int udl_driver_unload(struct drm_device *dev) kfree(udl); return 0; } + +void udl_device_set_unplugged(struct drm_device *dev) +{ + struct udl_device *udl = dev->dev_private; + smp_wmb(); + atomic_set(&udl->unplugged, 1); +} + +int udl_device_is_unplugged(struct drm_device *dev) +{ + struct udl_device *udl = dev->dev_private; + int ret = atomic_read(&udl->unplugged); + smp_rmb(); + return ret; +} diff --git a/include/drm/drmP.h b/include/drm/drmP.h index d7162cf..40c6099 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -748,7 +748,6 @@ struct drm_device { struct drm_minor *control; /**< Control node */ struct drm_minor *primary; /**< Primary node */ struct drm_minor *render; /**< Render node */ - atomic_t unplugged; /**< Flag whether dev is dead */ struct inode *anon_inode; /**< inode for private address-space */ char *unique; /**< unique name of the device */ /*@} */ @@ -879,19 +878,6 @@ static __inline__ int drm_core_check_feature(struct drm_device *dev, return ((dev->driver->driver_features & feature) ? 1 : 0); }
-static inline void drm_device_set_unplugged(struct drm_device *dev) -{ - smp_wmb(); - atomic_set(&dev->unplugged, 1); -} - -static inline int drm_device_is_unplugged(struct drm_device *dev) -{ - int ret = atomic_read(&dev->unplugged); - smp_rmb(); - return ret; -} - static inline bool drm_is_render_client(const struct drm_file *file_priv) { return file_priv->minor->type == DRM_MINOR_RENDER;