drm/radeon/atom: initialize more atom interpretor elements to 0

commit 42a21826dc54583cdb79cc8477732e911ac9c376 upstream.

The ProcessAuxChannel table on some rv635 boards assumes
the divmul members are initialized to 0 otherwise we get
an invalid fb offset since it has a bad mask set when
setting the fb base.  While here initialize all the
atom interpretor elements to 0.

Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=60639

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index fb441a790f3d..15da7ef344a4 100644
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -1222,12 +1222,17 @@ int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params)
         int r;
 
         mutex_lock(&ctx->mutex);
+        /* reset data block */
+        ctx->data_block = 0;
         /* reset reg block */
         ctx->reg_block = 0;
         /* reset fb window */
         ctx->fb_base = 0;
         /* reset io mode */
         ctx->io_mode = ATOM_IO_MM;
+        /* reset divmul */
+        ctx->divmul[0] = 0;
+        ctx->divmul[1] = 0;
         r = atom_execute_table_locked(ctx, index, params);
         mutex_unlock(&ctx->mutex);
         return r;