From: Andy Gross <andy.gr...@ti.com>
Added check for valid device information before dumping debugfs
information.
Signed-off-by: Andy Gross <andy.gross at ti.com>
Signed-off-by: Rob Clark <rob at ti.com>
---
drivers/staging/omapdrm/omap_dmm_tiler.c | 12 ++++++++++--
1 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/omapdrm/omap_dmm_tiler.c
b/drivers/staging/omapdrm/omap_dmm_tiler.c
index 852d944..e4c7bb6 100644
--- a/drivers/staging/omapdrm/omap_dmm_tiler.c
+++ b/drivers/staging/omapdrm/omap_dmm_tiler.c
@@ -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);
--
1.7.5.4
