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drm: rip out dev->ioctl_count tracking

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Now dev->ioctl_count tries to prevent the device from disappearing if
it's still in use. And if we'd actually need this code it would be
hopelessly racy and broken.

But luckily the vfs already takes care of this. So we can just rip it
out.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Daniel Vetter
2013-12-11 11:35:08 +01:00
committed by Dave Airlie
parent b8673b648a
commit 43d1337cbe
3 changed files with 1 additions and 10 deletions
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8
drivers/gpu/drm/drm_fops.c
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@@ -392,7 +392,6 @@ static void drm_legacy_dev_reinit(struct drm_device *dev)
if (drm_core_check_feature(dev, DRIVER_MODESET))
return;
atomic_set(&dev->ioctl_count, 0);
atomic_set(&dev->vma_count, 0);
dev->sigdata.lock = NULL;
@@ -578,12 +577,7 @@ int drm_release(struct inode *inode, struct file *filp)
*/
if (!--dev->open_count) {
if (atomic_read(&dev->ioctl_count)) {
DRM_ERROR("Device busy: %d\n",
atomic_read(&dev->ioctl_count));
retcode = -EBUSY;
} else
retcode = drm_lastclose(dev);
retcode = drm_lastclose(dev);
if (drm_device_is_unplugged(dev))
drm_put_dev(dev);
}