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disp: msm: sde: add checks to avoid null pointer dereference

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This change adds required checks to avoid accessing null pointer
where debug bus is not initialised and dumping the debug bus points.

Change-Id: Ia46a4b95706f05e37be660f006c04b1e2e9f6848
Signed-off-by: Andhavarapu Karthik <kartkart@codeaurora.org>
This commit is contained in:
Andhavarapu Karthik 2021-09-21 10:00:57 +05:30
commit 92359a8a2e
1 changed files with 3 additions and 0 deletions
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3
msm/sde_dbg.c
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@ -959,6 +959,9 @@ static void _sde_dbg_dump_sde_dbg_bus(struct sde_dbg_sde_debug_bus *bus)
u32 bus_size;
char name[20];
if (!bus || !bus->cmn.entries_size)
return;
reg_base = _sde_dump_get_blk_addr(bus->cmn.name);
if (!reg_base || !reg_base->base) {
pr_err("unable to find mem_base for %s\n", bus->cmn.name);