gpu: nvgpu: Remove support for old kernel version

Remove support for pre-4.4 kernels. This allows deleting the checks
for kernel version, and usage of linux/version.h.

Change-Id: I4d6cb30512ea164d27549f4f4d096e5931bb1379
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1543499
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 0 insertions, 23 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
index aa340ba6..6a07406a 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
@@ -13,8 +13,6 @@
  * more details.
  */
 
-#include <linux/version.h>
-
 #include <nvgpu/semaphore.h>
 #include <nvgpu/kmem.h>
 #include <nvgpu/log.h>
@@ -97,23 +95,15 @@ static int gk20a_channel_syncpt_wait_fd(struct gk20a_channel_sync *s, int fd,
                 return -EINVAL;
 
         /* validate syncpt ids */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
-        list_for_each_entry(pt, &sync_fence->pt_list_head, pt_list) {
-#else
         for (i = 0; i < sync_fence->num_fences; i++) {
                 pt = sync_pt_from_fence(sync_fence->cbs[i].sync_pt);
-#endif
                 wait_id = nvgpu_nvhost_sync_pt_id(pt);
                 if (!wait_id || !nvgpu_nvhost_syncpt_is_valid_pt_ext(
                                         sp->nvhost_dev, wait_id)) {
                         sync_fence_put(sync_fence);
                         return -EINVAL;
                 }
-#if !(LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0))
         }
-#else
-        }
-#endif
 
         num_wait_cmds = nvgpu_nvhost_sync_num_pts(sync_fence);
         if (num_wait_cmds == 0) {
@@ -132,13 +122,9 @@ static int gk20a_channel_syncpt_wait_fd(struct gk20a_channel_sync *s, int fd,
         }
 
         i = 0;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
-        list_for_each_entry(pt, &sync_fence->pt_list_head, pt_list) {
-#else
         for (i = 0; i < sync_fence->num_fences; i++) {
                 struct fence *f = sync_fence->cbs[i].sync_pt;
                 struct sync_pt *pt = sync_pt_from_fence(f);
-#endif
                 u32 wait_id = nvgpu_nvhost_sync_pt_id(pt);
                 u32 wait_value = nvgpu_nvhost_sync_pt_thresh(pt);
 
@@ -154,12 +140,7 @@ static int gk20a_channel_syncpt_wait_fd(struct gk20a_channel_sync *s, int fd,
                                 i * wait_cmd_size, wait_id, wait_value,
                                 sp->syncpt_buf.gpu_va);
                 }
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
-                i++;
-        }
-#else
         }
-#endif
 
         WARN_ON(i != num_wait_cmds);
         sync_fence_put(sync_fence);
@@ -675,11 +656,7 @@ static int gk20a_channel_semaphore_wait_fd(
         }
 
         /* If the fence has signaled there is no reason to wait on it. */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
-        status = sync_fence->status;
-#else
         status = atomic_read(&sync_fence->status);
-#endif
         if (status == 0) {
                 sync_fence_put(sync_fence);
                 goto skip_slow_path;