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| author | Andy Gross <andy.gross@ti.com> | 2012-03-05 10:48:38 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-07 13:38:07 -0800 |
| commit | 02646fb8b3de95a170f8ac4f0773a4f5e2a1b54c (patch) | |
| tree | 07c6c654e77ba9e3d3932ed46da416de6c542912 /drivers/staging/omapdrm | |
| parent | 132390c79e01b3da732bc7b5d9e729b52086ceb6 (diff) | |
| download | linux-02646fb8b3de95a170f8ac4f0773a4f5e2a1b54c.tar.gz linux-02646fb8b3de95a170f8ac4f0773a4f5e2a1b54c.tar.bz2 linux-02646fb8b3de95a170f8ac4f0773a4f5e2a1b54c.zip | |
staging: drm/omap: Validate debugfs device
Added check for valid device information before dumping debugfs
information.
Signed-off-by: Andy Gross <andy.gross@ti.com>
Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/omapdrm')
| -rw-r--r-- | 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 852d9440f725..e4c7bb6afce4 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); |