diff --git a/src/mesa/state_tracker/st_cb_fbo.c b/src/mesa/state_tracker/st_cb_fbo.c
index 3a5c03c3354..0800f5b3d29 100644
--- a/src/mesa/state_tracker/st_cb_fbo.c
+++ b/src/mesa/state_tracker/st_cb_fbo.c
@@ -47,6 +47,7 @@
 #include "pipe/p_screen.h"
 #include "st_atom.h"
 #include "st_context.h"
+#include "st_cb_bufferobjects.h"
 #include "st_cb_fbo.h"
 #include "st_cb_flush.h"
 #include "st_cb_texture.h"
@@ -780,7 +781,6 @@ st_MapRenderbuffer(struct gl_context *ctx,
    struct st_renderbuffer *strb = st_renderbuffer(rb);
    struct pipe_context *pipe = st->pipe;
    const GLboolean invert = rb->Name == 0;
-   unsigned usage;
    GLuint y2;
    GLubyte *map;
 
@@ -800,13 +800,13 @@ st_MapRenderbuffer(struct gl_context *ctx,
       return;
    }
 
-   usage = 0x0;
-   if (mode & GL_MAP_READ_BIT)
-      usage |= PIPE_TRANSFER_READ;
-   if (mode & GL_MAP_WRITE_BIT)
-      usage |= PIPE_TRANSFER_WRITE;
-   if (mode & GL_MAP_INVALIDATE_RANGE_BIT)
-      usage |= PIPE_TRANSFER_DISCARD_RANGE;
+   /* Check for unexpected flags */
+   assert((mode & ~(GL_MAP_READ_BIT |
+                    GL_MAP_WRITE_BIT |
+                    GL_MAP_INVALIDATE_RANGE_BIT)) == 0);
+
+   const enum pipe_transfer_usage transfer_flags =
+      st_access_flags_to_transfer_flags(mode, false);
 
    /* Note: y=0=bottom of buffer while y2=0=top of buffer.
     * 'invert' will be true for window-system buffers and false for
@@ -821,7 +821,7 @@ st_MapRenderbuffer(struct gl_context *ctx,
                             strb->texture,
                             strb->surface->u.tex.level,
                             strb->surface->u.tex.first_layer,
-                            usage, x, y2, w, h, &strb->transfer);
+                            transfer_flags, x, y2, w, h, &strb->transfer);
    if (map) {
       if (invert) {
          *rowStrideOut = -(int) strb->transfer->stride;
diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c
index 98f2443bb30..6345ead6396 100644
--- a/src/mesa/state_tracker/st_cb_texture.c
+++ b/src/mesa/state_tracker/st_cb_texture.c
@@ -254,19 +254,18 @@ st_MapTextureImage(struct gl_context *ctx,
 {
    struct st_context *st = st_context(ctx);
    struct st_texture_image *stImage = st_texture_image(texImage);
-   unsigned pipeMode;
    GLubyte *map;
    struct pipe_transfer *transfer;
 
-   pipeMode = 0x0;
-   if (mode & GL_MAP_READ_BIT)
-      pipeMode |= PIPE_TRANSFER_READ;
-   if (mode & GL_MAP_WRITE_BIT)
-      pipeMode |= PIPE_TRANSFER_WRITE;
-   if (mode & GL_MAP_INVALIDATE_RANGE_BIT)
-      pipeMode |= PIPE_TRANSFER_DISCARD_RANGE;
+   /* Check for unexpected flags */
+   assert((mode & ~(GL_MAP_READ_BIT |
+                    GL_MAP_WRITE_BIT |
+                    GL_MAP_INVALIDATE_RANGE_BIT)) == 0);
 
-   map = st_texture_image_map(st, stImage, pipeMode, x, y, slice, w, h, 1,
+   const enum pipe_transfer_usage transfer_flags =
+      st_access_flags_to_transfer_flags(mode, false);
+
+   map = st_texture_image_map(st, stImage, transfer_flags, x, y, slice, w, h, 1,
                               &transfer);
    if (map) {
       if (st_etc_fallback(st, texImage)) {