diff options
-rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c index 5c9b3392758e..2e2a0f8586f7 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c @@ -257,9 +257,14 @@ static void update_mqd(struct mqd_manager *mm, void *mqd, * Limit is 0xFF EOP entries (= 0x7F8 dwords). CP will not submit * more than (EOP entry count - 1) so a queue size of 0x800 dwords * is safe, giving a maximum field value of 0xA. + * + * Also, do calculation only if EOP is used (size > 0), otherwise + * the order_base_2 calculation provides incorrect result. + * */ - m->cp_hqd_eop_control = min(0xA, - order_base_2(q->eop_ring_buffer_size / 4) - 1); + m->cp_hqd_eop_control = q->eop_ring_buffer_size ? + min(0xA, order_base_2(q->eop_ring_buffer_size / 4) - 1) : 0; + m->cp_hqd_eop_base_addr_lo = lower_32_bits(q->eop_ring_buffer_address >> 8); m->cp_hqd_eop_base_addr_hi = |