diff options
| author | Dhaval Patel <pdhaval@codeaurora.org> | 2015-12-04 16:13:29 -0800 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 21:13:24 -0700 |
| commit | 945d3d962ca4b188afb56a93e9fbec7f52f51002 (patch) | |
| tree | 5d09c8b7c1daecff06b17e4f9f1eb98dd8be1f71 | |
| parent | ed2fedf0a5d087656530676d63d8b3ba6deacbcd (diff) | |
msm: mdss: fix vbif debug bus dump in log
Invalid memory access during vbif debug bus
dump in log leads to crash. This adds null
check before accessing debug bus memory.
Change-Id: I54b74ce1004c4246398f18cd1a262e29a0a20d20
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_debug_xlog.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/video/fbdev/msm/mdss_debug_xlog.c b/drivers/video/fbdev/msm/mdss_debug_xlog.c index f96ae8277b79..db0c1f2333ac 100644 --- a/drivers/video/fbdev/msm/mdss_debug_xlog.c +++ b/drivers/video/fbdev/msm/mdss_debug_xlog.c @@ -396,7 +396,8 @@ static void mdss_dump_vbif_debug_bus(u32 bus_dump_flag, wmb(); __vbif_debug_bus(head, vbif_base, dump_addr, in_log); - dump_addr += (head->block_cnt * head->test_pnt_cnt * 4); + if (dump_addr) + dump_addr += (head->block_cnt * head->test_pnt_cnt * 4); } mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_OFF); |