From: Dave Airlie Date: Sun, 18 Feb 2007 06:13:39 +0000 (+1100) Subject: drm: fix crash with fops lock and fixup sarea/page size locking X-Git-Tag: Ubuntu-5.13.0-19.19~51836^2~14 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=11d9c2fd0ae74647ea2b52f9bdfa7a920b48d1f1;p=mirror_ubuntu-jammy-kernel.git drm: fix crash with fops lock and fixup sarea/page size locking Signed-off-by: Dave Airlie --- diff --git a/drivers/char/drm/drm_fops.c b/drivers/char/drm/drm_fops.c index 898f47dafec0..afe5f07f2e17 100644 --- a/drivers/char/drm/drm_fops.c +++ b/drivers/char/drm/drm_fops.c @@ -46,6 +46,7 @@ static int drm_setup(drm_device_t * dev) drm_local_map_t *map; int i; int ret; + u32 sareapage; if (dev->driver->firstopen) { ret = dev->driver->firstopen(dev); @@ -56,7 +57,8 @@ static int drm_setup(drm_device_t * dev) dev->magicfree.next = NULL; /* 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) return i; @@ -84,7 +86,7 @@ static int drm_setup(drm_device_t * dev) INIT_LIST_HEAD(&dev->ctxlist->head); dev->vmalist = NULL; - dev->sigdata.lock = dev->lock.hw_lock = NULL; + dev->sigdata.lock = NULL; init_waitqueue_head(&dev->lock.lock_queue); dev->queue_count = 0; dev->queue_reserved = 0;