On 7/26/19 12:02 PM, David (Dingchen) Zhang wrote: > From: Dingchen Zhang <dingchen.zhang@xxxxxxx> > > to terminate the while-loop in drm_dp_aux_crc_work when > drm_dp_start/stop_crc are called in the hook to set crc source. > > v2: Move spin_lock around entire crc->opened use (Daniel) > > Cc: Daniel Vetter <daniel@xxxxxxxx> > Cc: Harry Wentland <Harry.Wentland@xxxxxxx> > Cc: Nick Kazlauskas <Nicholas.Kazlauskas@xxxxxxx> > Signed-off-by: Dingchen Zhang <dingchen.zhang@xxxxxxx> > --- > drivers/gpu/drm/drm_debugfs_crc.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/gpu/drm/drm_debugfs_crc.c b/drivers/gpu/drm/drm_debugfs_crc.c > index dac267e840af..f87148203599 100644 > --- a/drivers/gpu/drm/drm_debugfs_crc.c > +++ b/drivers/gpu/drm/drm_debugfs_crc.c > @@ -249,6 +249,12 @@ static int crtc_crc_release(struct inode *inode, struct file *filep) > struct drm_crtc *crtc = filep->f_inode->i_private; > struct drm_crtc_crc *crc = &crtc->crc; > > + /* terminate the infinite while loop if 'drm_dp_aux_crc_work' running */ > + spin_lock_irq(&crc->lock); > + if (crc->opened) > + crc->opened = false; You can just set this to false, no need to check the value really. Nicholas Kazlauskas > + spin_unlock_irq(&crc->lock); > + > crtc->funcs->set_crc_source(crtc, NULL); > > spin_lock_irq(&crc->lock); > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
