Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
index ffa8dc3..ea34bc9 100644
--- a/drivers/gpu/drm/drm_file.c
+++ b/drivers/gpu/drm/drm_file.c
@@ -31,17 +31,20 @@
* OTHER DEALINGS IN THE SOFTWARE.
*/
+#include <linux/dma-fence.h>
+#include <linux/module.h>
+#include <linux/pci.h>
#include <linux/poll.h>
#include <linux/slab.h>
-#include <linux/module.h>
#include <drm/drm_client.h>
+#include <drm/drm_drv.h>
#include <drm/drm_file.h>
-#include <drm/drmP.h>
+#include <drm/drm_print.h>
-#include "drm_legacy.h"
-#include "drm_internal.h"
#include "drm_crtc_internal.h"
+#include "drm_internal.h"
+#include "drm_legacy.h"
/* from BKL pushdown */
DEFINE_MUTEX(drm_global_mutex);
@@ -100,8 +103,6 @@
* :ref:`IOCTL support in the userland interfaces chapter<drm_driver_ioctl>`.
*/
-static int drm_open_helper(struct file *filp, struct drm_minor *minor);
-
/**
* drm_file_alloc - allocate file context
* @minor: minor to allocate on
@@ -128,7 +129,6 @@
/* for compatibility root is always authenticated */
file->authenticated = capable(CAP_SYS_ADMIN);
- file->lock_count = 0;
INIT_LIST_HEAD(&file->lhead);
INIT_LIST_HEAD(&file->fbs);
@@ -147,8 +147,7 @@
if (drm_core_check_feature(dev, DRIVER_SYNCOBJ))
drm_syncobj_open(file);
- if (drm_core_check_feature(dev, DRIVER_PRIME))
- drm_prime_init_file_private(&file->prime);
+ drm_prime_init_file_private(&file->prime);
if (dev->driver->open) {
ret = dev->driver->open(dev, file);
@@ -159,8 +158,7 @@
return file;
out_prime_destroy:
- if (drm_core_check_feature(dev, DRIVER_PRIME))
- drm_prime_destroy_file_private(&file->prime);
+ drm_prime_destroy_file_private(&file->prime);
if (drm_core_check_feature(dev, DRIVER_SYNCOBJ))
drm_syncobj_release(file);
if (drm_core_check_feature(dev, DRIVER_GEM))
@@ -253,8 +251,7 @@
if (dev->driver->postclose)
dev->driver->postclose(dev, file);
- if (drm_core_check_feature(dev, DRIVER_PRIME))
- drm_prime_destroy_file_private(&file->prime);
+ drm_prime_destroy_file_private(&file->prime);
WARN_ON(!list_empty(&file->event_list));
@@ -262,74 +259,18 @@
kfree(file);
}
-static int drm_setup(struct drm_device * dev)
+static void drm_close_helper(struct file *filp)
{
- int ret;
+ struct drm_file *file_priv = filp->private_data;
+ struct drm_device *dev = file_priv->minor->dev;
- if (dev->driver->firstopen &&
- drm_core_check_feature(dev, DRIVER_LEGACY)) {
- ret = dev->driver->firstopen(dev);
- if (ret != 0)
- return ret;
- }
+ mutex_lock(&dev->filelist_mutex);
+ list_del(&file_priv->lhead);
+ mutex_unlock(&dev->filelist_mutex);
- ret = drm_legacy_dma_setup(dev);
- if (ret < 0)
- return ret;
-
-
- DRM_DEBUG("\n");
- return 0;
+ drm_file_free(file_priv);
}
-/**
- * drm_open - open method for DRM file
- * @inode: device inode
- * @filp: file pointer.
- *
- * This function must be used by drivers as their &file_operations.open method.
- * It looks up the correct DRM device and instantiates all the per-file
- * resources for it. It also calls the &drm_driver.open driver callback.
- *
- * RETURNS:
- *
- * 0 on success or negative errno value on falure.
- */
-int drm_open(struct inode *inode, struct file *filp)
-{
- struct drm_device *dev;
- struct drm_minor *minor;
- int retcode;
- int need_setup = 0;
-
- minor = drm_minor_acquire(iminor(inode));
- if (IS_ERR(minor))
- return PTR_ERR(minor);
-
- dev = minor->dev;
- if (!dev->open_count++)
- need_setup = 1;
-
- /* share address_space across all char-devs of a single device */
- filp->f_mapping = dev->anon_inode->i_mapping;
-
- retcode = drm_open_helper(filp, minor);
- if (retcode)
- goto err_undo;
- if (need_setup) {
- retcode = drm_setup(dev);
- if (retcode)
- goto err_undo;
- }
- return 0;
-
-err_undo:
- dev->open_count--;
- drm_minor_release(minor);
- return retcode;
-}
-EXPORT_SYMBOL(drm_open);
-
/*
* Check whether DRI will run on this CPU.
*
@@ -411,29 +352,55 @@
return 0;
}
-static void drm_legacy_dev_reinit(struct drm_device *dev)
+/**
+ * drm_open - open method for DRM file
+ * @inode: device inode
+ * @filp: file pointer.
+ *
+ * This function must be used by drivers as their &file_operations.open method.
+ * It looks up the correct DRM device and instantiates all the per-file
+ * resources for it. It also calls the &drm_driver.open driver callback.
+ *
+ * RETURNS:
+ *
+ * 0 on success or negative errno value on falure.
+ */
+int drm_open(struct inode *inode, struct file *filp)
{
- if (dev->irq_enabled)
- drm_irq_uninstall(dev);
+ struct drm_device *dev;
+ struct drm_minor *minor;
+ int retcode;
+ int need_setup = 0;
- mutex_lock(&dev->struct_mutex);
+ minor = drm_minor_acquire(iminor(inode));
+ if (IS_ERR(minor))
+ return PTR_ERR(minor);
- drm_legacy_agp_clear(dev);
+ dev = minor->dev;
+ if (!dev->open_count++)
+ need_setup = 1;
- drm_legacy_sg_cleanup(dev);
- drm_legacy_vma_flush(dev);
- drm_legacy_dma_takedown(dev);
+ /* share address_space across all char-devs of a single device */
+ filp->f_mapping = dev->anon_inode->i_mapping;
- mutex_unlock(&dev->struct_mutex);
+ retcode = drm_open_helper(filp, minor);
+ if (retcode)
+ goto err_undo;
+ if (need_setup) {
+ retcode = drm_legacy_setup(dev);
+ if (retcode) {
+ drm_close_helper(filp);
+ goto err_undo;
+ }
+ }
+ return 0;
- dev->sigdata.lock = NULL;
-
- dev->context_flag = 0;
- dev->last_context = 0;
- dev->if_version = 0;
-
- DRM_DEBUG("lastclose completed\n");
+err_undo:
+ dev->open_count--;
+ drm_minor_release(minor);
+ return retcode;
}
+EXPORT_SYMBOL(drm_open);
void drm_lastclose(struct drm_device * dev)
{
@@ -473,17 +440,11 @@
DRM_DEBUG("open_count = %d\n", dev->open_count);
- mutex_lock(&dev->filelist_mutex);
- list_del(&file_priv->lhead);
- mutex_unlock(&dev->filelist_mutex);
+ drm_close_helper(filp);
- drm_file_free(file_priv);
-
- if (!--dev->open_count) {
+ if (!--dev->open_count)
drm_lastclose(dev);
- if (drm_dev_is_unplugged(dev))
- drm_put_dev(dev);
- }
+
mutex_unlock(&drm_global_mutex);
drm_minor_release(minor);
@@ -525,7 +486,7 @@
struct drm_device *dev = file_priv->minor->dev;
ssize_t ret;
- if (!access_ok(VERIFY_WRITE, buffer, count))
+ if (!access_ok(buffer, count))
return -EFAULT;
ret = mutex_lock_interruptible(&file_priv->event_read_lock);
@@ -569,6 +530,7 @@
file_priv->event_space -= length;
list_add(&e->link, &file_priv->event_list);
spin_unlock_irq(&dev->event_lock);
+ wake_up_interruptible(&file_priv->event_wait);
break;
}
@@ -701,7 +663,7 @@
EXPORT_SYMBOL(drm_event_reserve_init);
/**
- * drm_event_cancel_free - free a DRM event and release it's space
+ * drm_event_cancel_free - free a DRM event and release its space
* @dev: DRM device
* @p: tracking structure for the pending event
*