Revert "Revert "Revert "gpu: nvgpu: Get coherency on gv100 + NVLINK working"""

This reverts commit 89fbf39a05483917c0a9f3453fd94c724bc37375.

Bug 2075315

Change-Id: Id34a0376be5160b164931926ec600f77edf69667
Signed-off-by: Timo Alho <talho@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1668487
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>

1 files changed, 0 insertions, 8 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/module.c b/drivers/gpu/nvgpu/common/linux/module.c
index 741c86e7..b103fcea 100644
--- a/drivers/gpu/nvgpu/common/linux/module.c
+++ b/drivers/gpu/nvgpu/common/linux/module.c
@@ -20,7 +20,6 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_platform.h>
-#include <linux/of_address.h>
 #include <linux/interrupt.h>
 #include <linux/pm_runtime.h>
 #include <linux/reset.h>
@@ -1108,7 +1107,6 @@ static int gk20a_probe(struct platform_device *dev)
         struct gk20a *gk20a;
         int err;
         struct gk20a_platform *platform = NULL;
-        struct device_node *np;
 
         if (dev->dev.of_node) {
                 const struct of_device_id *match;
@@ -1149,12 +1147,6 @@ static int gk20a_probe(struct platform_device *dev)
         if (err)
                 goto return_err;
 
-        np = nvgpu_get_node(gk20a);
-        if (of_dma_is_coherent(np)) {
-                __nvgpu_set_enabled(gk20a, NVGPU_USE_COHERENT_SYSMEM, true);
-                __nvgpu_set_enabled(gk20a, NVGPU_SUPPORT_IO_COHERENCE, true);
-        }
-
         if (nvgpu_platform_is_simulation(gk20a))
                 __nvgpu_set_enabled(gk20a, NVGPU_IS_FMODEL, true);