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gpu: nvgpu: flush update notifiers on suspend

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If any gk20a update callback work is pending, wait for them to finish
before going to suspend.

Bug 200052943

Change-Id: Ib469db6e29d13ae26aaca5fceb1ccd20f18bfc3c
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/601034
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Konsta Holtta
2014-11-11 11:23:56 +02:00
committed by Dan Willemsen
parent 59339b4fd9
commit cbc336a984
1 changed files with 7 additions and 2 deletions
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9
drivers/gpu/nvgpu/gk20a/channel_gk20a.c
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@@ -2093,13 +2093,18 @@ int gk20a_channel_suspend(struct gk20a *g)
return err;
for (chid = 0; chid < f->num_channels; chid++) {
if (f->channel[chid].in_use) {
struct channel_gk20a *ch = &f->channel[chid];
if (ch->in_use) {
gk20a_dbg_info("suspend channel %d", chid);
/* disable channel */
g->ops.fifo.disable_channel(&f->channel[chid]);
g->ops.fifo.disable_channel(ch);
/* preempt the channel */
g->ops.fifo.preempt_channel(g, chid);
/* wait for channel update notifiers */
if (ch->update_fn &&
work_pending(&ch->update_fn_work))
flush_work(&ch->update_fn_work);
channels_in_use = true;
}