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drm/amd/display: Fix a potential NULL dereference

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The debug printk dereferences "link->link_enc" before we have ensured
that it is non-NULL.  Fix this potential NULL derefence by moving the
printk after the check.

Fixes: 64ff088242 ("drm/amd/display: Log link/connector info provided in BIOS object table")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dan Carpenter 2021-01-25 11:45:08 +03:00 committed by Alex Deucher
parent 23a63e91c1
commit d3abc78f4f
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/display/dc/core/dc_link.c
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@ -1525,13 +1525,13 @@ static bool dc_link_construct(struct dc_link *link,
link->link_enc =
link->dc->res_pool->funcs->link_enc_create(&enc_init_data);
DC_LOG_DC("BIOS object table - DP_IS_USB_C: %d", link->link_enc->features.flags.bits.DP_IS_USB_C);
if (!link->link_enc) {
DC_ERROR("Failed to create link encoder!\n");
goto link_enc_create_fail;
}
DC_LOG_DC("BIOS object table - DP_IS_USB_C: %d", link->link_enc->features.flags.bits.DP_IS_USB_C);
link->link_enc_hw_inst = link->link_enc->transmitter;
for (i = 0; i < 4; i++) {