drm: Kill DRM_SUSER

Checking directly for the right capability is simpler. Also this rids
us of a few places that use DRM_CURRENTPID.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

3 files changed, 3 insertions, 4 deletions

diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
index 15b86a94949d..99aab8639089 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -593,7 +593,7 @@ int ttm_bo_kmap(struct ttm_buffer_object *bo,
         if (start_page > bo->num_pages)
                 return -EINVAL;
 #if 0
-        if (num_pages > 1 && !DRM_SUSER(DRM_CURPROC))
+        if (num_pages > 1 && !capable(CAP_SYS_ADMIN))
                 return -EPERM;
 #endif
         (void) ttm_mem_io_lock(man, false);
diff --git a/drivers/gpu/drm/via/via_dma.c b/drivers/gpu/drm/via/via_dma.c
index 5d4179284964..a18479c6b6da 100644
--- a/drivers/gpu/drm/via/via_dma.c
+++ b/drivers/gpu/drm/via/via_dma.c
@@ -234,13 +234,13 @@ static int via_dma_init(struct drm_device *dev, void *data, struct drm_file *fil
 
         switch (init->func) {
         case VIA_INIT_DMA:
-                if (!DRM_SUSER(DRM_CURPROC))
+                if (!capable(CAP_SYS_ADMIN))
                         retcode = -EPERM;
                 else
                         retcode = via_initialize(dev, dev_priv, init);
                 break;
         case VIA_CLEANUP_DMA:
-                if (!DRM_SUSER(DRM_CURPROC))
+                if (!capable(CAP_SYS_ADMIN))
                         retcode = -EPERM;
                 else
                         retcode = via_dma_cleanup(dev);
diff --git a/include/drm/drm_os_linux.h b/include/drm/drm_os_linux.h
index 43008938b6b2..86ab99bc0ac5 100644
--- a/include/drm/drm_os_linux.h
+++ b/include/drm/drm_os_linux.h
@@ -21,7 +21,6 @@ static inline void writeq(u64 val, void __iomem *reg)
 
 /** Current process ID */
 #define DRM_CURRENTPID                  task_pid_nr(current)
-#define DRM_SUSER(p)                    capable(CAP_SYS_ADMIN)
 #define DRM_UDELAY(d)                   udelay(d)
 /** Read a byte from a MMIO region */
 #define DRM_READ8(map, offset)          readb(((void __iomem *)(map)->handle) + (offset))