Revert "gpu: nvgpu: allow all sizes in access fb API"

This reverts commit b79c350d68bac79ec9ed80ef5f19f15a0d0eedf4.

Underlying PRAMIN infrastructure enforces 4 byte aligned size only,
so the API should enforce that too

Bug 2285052

Change-Id: I2b4a209edd479d72992708b35e1d52940ff20637
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1795653
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/ioctl_dbg.c b/drivers/gpu/nvgpu/os/linux/ioctl_dbg.c
index e7bb6700..ff4fcdca 100644
--- a/drivers/gpu/nvgpu/os/linux/ioctl_dbg.c
+++ b/drivers/gpu/nvgpu/os/linux/ioctl_dbg.c
@@ -1568,7 +1568,7 @@ static int nvgpu_dbg_gpu_ioctl_access_fb_memory(struct dbg_session_gk20a *dbg_s,
         u64 access_limit_size = SZ_4K;
         int err = 0;
 
-        if ((args->offset & 3) || (!args->size))
+        if ((args->offset & 3) || (!args->size) || (args->size & 3))
                 return -EINVAL;
 
         dmabuf = dma_buf_get(args->dmabuf_fd);