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Commit 11d9c2fd authored by Dave Airlie's avatar Dave Airlie
Browse files

drm: fix crash with fops lock and fixup sarea/page size locking 



Signed-off-by: default avatarDave Airlie <airlied@linux.ie>
parent 54ba2f76

drivers/char/drm/drm_fops.c

+4 −2
Original line number Original line Diff line number Diff line
@@ -46,6 +46,7 @@ static int drm_setup(drm_device_t * dev) 
	drm_local_map_t *map;

	drm_local_map_t *map;

	int i;

	int i;

	int ret;

	int ret;

	u32 sareapage;





	if (dev->driver->firstopen) {

	if (dev->driver->firstopen) {

		ret = dev->driver->firstopen(dev);

		ret = dev->driver->firstopen(dev);
@@ -56,7 +57,8 @@ static int drm_setup(drm_device_t * dev) 
	dev->magicfree.next = NULL;

	dev->magicfree.next = NULL;





	/* prebuild the SAREA */

	/* prebuild the SAREA */

	i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, _DRM_CONTAINS_LOCK, &map);

	sareapage = max(SAREA_MAX, PAGE_SIZE);

	i = drm_addmap(dev, 0, sareapage, _DRM_SHM, _DRM_CONTAINS_LOCK, &map);

	if (i != 0)

	if (i != 0)

		return i;

		return i;
@@ -84,7 +86,7 @@ static int drm_setup(drm_device_t * dev) 
	INIT_LIST_HEAD(&dev->ctxlist->head);

	INIT_LIST_HEAD(&dev->ctxlist->head);





	dev->vmalist = NULL;

	dev->vmalist = NULL;

	dev->sigdata.lock = dev->lock.hw_lock = NULL;

	dev->sigdata.lock = NULL;

	init_waitqueue_head(&dev->lock.lock_queue);

	init_waitqueue_head(&dev->lock.lock_queue);

	dev->queue_count = 0;

	dev->queue_count = 0;

	dev->queue_reserved = 0;

	dev->queue_reserved = 0;