evie/android_kernel_oneplus_msm8998
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msm: mdss: fix vbif debug bus dump in log

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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>
This commit is contained in:
Dhaval Patel 2015-12-04 16:13:29 -08:00 • committed by David Keitel
parent ed2fedf0a5
commit 945d3d962c
1 changed files with 2 additions and 1 deletions
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3
drivers/video/fbdev/msm/mdss_debug_xlog.c
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@ -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);