gpu: nvgpu: Use nvgpu_rwsem as TSG channel lock

Use abstract nvgpu_rwsem as TSG channel list lock instead of the Linux
specific rw_semaphore.

JIRA NVGPU-259

Change-Id: I41a38b29d4651838b1962d69f102af1384e12cb6
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1579935
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c b/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
index 582894b9..eac720ca 100644
--- a/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
@@ -712,7 +712,7 @@ int vgpu_fifo_force_reset_ch(struct channel_gk20a *ch,
         if (gk20a_is_channel_marked_as_tsg(ch)) {
                 tsg = &g->fifo.tsg[ch->tsgid];
 
-                down_read(&tsg->ch_list_lock);
+                nvgpu_rwsem_down_read(&tsg->ch_list_lock);
 
                 list_for_each_entry(ch_tsg, &tsg->ch_list, ch_entry) {
                         if (gk20a_channel_get(ch_tsg)) {
@@ -722,7 +722,7 @@ int vgpu_fifo_force_reset_ch(struct channel_gk20a *ch,
                         }
                 }
 
-                up_read(&tsg->ch_list_lock);
+                nvgpu_rwsem_up_read(&tsg->ch_list_lock);
         } else {
                 gk20a_set_error_notifier(ch, err_code);
                 ch->has_timedout = true;