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

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>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index fb441a790f3dc5a56fa6c65bf4384f2d098906fb..15da7ef344a4e55fa11d604c21269e97ab361386 100644 (file)
--- 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;