The DisplayID specifications explicitly call out 0 as a valid payload
length for data blocks. The mere presence of a data block, or the
information coded in the block specific data (bits 7:3 in offset 1), may
be enough to convey the necessary information.
Signed-off-by: Jani Nikula <jani.nik...@intel.com>
---
drivers/gpu/drm/drm_displayid.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_displayid.c b/drivers/gpu/drm/drm_displayid.c
index 902ff6114b68..e0b9e58a9dc8 100644
--- a/drivers/gpu/drm/drm_displayid.c
+++ b/drivers/gpu/drm/drm_displayid.c
@@ -77,8 +77,7 @@ displayid_iter_block(const struct displayid_iter *iter)
block = (const struct displayid_block *)&iter->section[iter->idx];
if (iter->idx + sizeof(*block) <= iter->length &&
- iter->idx + sizeof(*block) + block->num_bytes <= iter->length &&
- block->num_bytes > 0)
+ iter->idx + sizeof(*block) + block->num_bytes <= iter->length)
return block;
return NULL;
--
2.20.1
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