diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c index 72970e49800a..7f25c11f4248 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c @@ -176,12 +176,15 @@ static void dpcd_reduce_address_range( uint8_t * const reduced_data, const uint32_t reduced_size) { - const uint32_t reduced_end_address = END_ADDRESS(reduced_address, reduced_size); - const uint32_t extended_end_address = END_ADDRESS(extended_address, extended_size); const uint32_t offset = reduced_address - extended_address; - if (extended_end_address == reduced_end_address && extended_address == reduced_address) - return; /* extended and reduced address ranges point to the same data */ + /* + * If the address is same, address was not extended. + * So we do not need to free any memory. + * The data is in original buffer(reduced_data). + */ + if (extended_data == reduced_data) + return; memcpy(&extended_data[offset], reduced_data, reduced_size); kfree(extended_data); |