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drm/doc: Add a warning to drm_dev_is_unplugged

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It's probably not what you want, definitely not after Noralf's work to
add drm_dev_enter/exit.

Cc: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190129085643.16357-1-daniel.vetter@ffwll.ch
This commit is contained in:
Daniel Vetter 2019-01-29 09:56:43 +01:00
parent 78de14c23e
commit 168982d243
1 changed files with 4 additions and 0 deletions
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4
include/drm/drm_drv.h
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@ -643,6 +643,10 @@ void drm_dev_unplug(struct drm_device *dev);
* Unplugging itself is singalled through drm_dev_unplug(). If a device is
* unplugged, these two functions guarantee that any store before calling
* drm_dev_unplug() is visible to callers of this function after it completes
*
* WARNING: This function fundamentally races against drm_dev_unplug(). It is
* recommended that drivers instead use the underlying drm_dev_enter() and
* drm_dev_exit() function pairs.
*/
static inline bool drm_dev_is_unplugged(struct drm_device *dev)
{