Commit 42a21826 authored Jul 30, 2013 by Alex Deucher

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

parent 63f22d0e

drivers/gpu/drm/radeon/atom.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -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;