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drm/amd/display: Add null check to dc_submit_i2c_oem

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[why]
dc_submit_i2c_oem could be called with ddc null

[how]
add null check and fail the call instead

Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Martin Leung <martin.leung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Martin Leung
2019-10-30 14:19:30 -04:00
committed by Alex Deucher
parent ac31a24d91
commit ac78fa502a
1 changed files with 7 additions and 4 deletions
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11
drivers/gpu/drm/amd/display/dc/core/dc.c
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@@ -3477,10 +3477,13 @@ bool dc_submit_i2c_oem(
struct i2c_command *cmd)
{
struct ddc_service *ddc = dc->res_pool->oem_device;
return dce_i2c_submit_command(
dc->res_pool,
ddc->ddc_pin,
cmd);
if (ddc)
return dce_i2c_submit_command(
dc->res_pool,
ddc->ddc_pin,
cmd);
return false;
}
static bool link_add_remote_sink_helper(struct dc_link *dc_link, struct dc_sink *sink)