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Commit 02646fb8 authored by Andy Gross's avatar Andy Gross Committed by Greg Kroah-Hartman
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staging: drm/omap: Validate debugfs device 



Added check for valid device information before dumping debugfs
information.

Signed-off-by: default avatarAndy Gross <andy.gross@ti.com>
Signed-off-by: default avatarRob Clark <rob@ti.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 132390c7

drivers/staging/omapdrm/omap_dmm_tiler.c

+10 −2
Original line number Diff line number Diff line
@@ -766,10 +766,18 @@ int tiler_map_show(struct seq_file *s, void *arg) 
	const char *a2d = special;

	const char *m2dp = m2d, *a2dp = a2d;

	char nice[128];

	int h_adj = omap_dmm->lut_height / ydiv;

	int w_adj = omap_dmm->lut_width / xdiv;

	int h_adj;

	int w_adj;

	unsigned long flags;



	if (!omap_dmm) {

		/* early return if dmm/tiler device is not initialized */

		return 0;

	}



	h_adj = omap_dmm->lut_height / ydiv;

	w_adj = omap_dmm->lut_width / xdiv;



	map = kzalloc(h_adj * sizeof(*map), GFP_KERNEL);

	global_map = kzalloc((w_adj + 1) * h_adj, GFP_KERNEL);