On Sat, Aug 12, 2017 at 12:56 AM, Felix Kuehling <Felix.Kuehling at amd.com> wrote:
> Remove BUG_ONs that check for NULL pointer arguments that are
> dereferenced in the same function. Dereferencing the NULL pointer
> will generate a BUG anyway, so the explicit check is redundant and
> unnecessary overhead.
>
> Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
> ---
> drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.c | 26 +-----------
> drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.c | 12 ------
> drivers/gpu/drm/amd/amdkfd/kfd_device.c | 10 -----
> .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 48 +---------------------
> .../drm/amd/amdkfd/kfd_device_queue_manager_cik.c | 2 -
> .../drm/amd/amdkfd/kfd_device_queue_manager_vi.c | 2 -
> drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c | 4 --
> drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c | 16 --------
> drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c | 17 --------
> drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c | 4 --
> drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c | 28 +------------
> drivers/gpu/drm/amd/amdkfd/kfd_process.c | 2 -
> .../gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 15 -------
> drivers/gpu/drm/amd/amdkfd/kfd_queue.c | 2 -
> drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 28 -------------
> 15 files changed, 4 insertions(+), 212 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.c b/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.c
> index 0ef9136..3841cad 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.c
> @@ -42,8 +42,6 @@
>
> static void dbgdev_address_watch_disable_nodiq(struct kfd_dev *dev)
> {
> - BUG_ON(!dev || !dev->kfd2kgd);
> -
> dev->kfd2kgd->address_watch_disable(dev->kgd);
> }
>
> @@ -62,7 +60,7 @@ static int dbgdev_diq_submit_ib(struct kfd_dbgdev *dbgdev,
> unsigned int *ib_packet_buff;
> int status;
>
> - BUG_ON(!dbgdev || !dbgdev->kq || !packet_buff || !size_in_bytes);
> + BUG_ON(!size_in_bytes);
>
> kq = dbgdev->kq;
>
> @@ -168,8 +166,6 @@ static int dbgdev_diq_submit_ib(struct kfd_dbgdev *dbgdev,
>
> static int dbgdev_register_nodiq(struct kfd_dbgdev *dbgdev)
> {
> - BUG_ON(!dbgdev);
> -
> /*
> * no action is needed in this case,
> * just make sure diq will not be used
> @@ -187,8 +183,6 @@ static int dbgdev_register_diq(struct kfd_dbgdev *dbgdev)
> struct kernel_queue *kq = NULL;
> int status;
>
> - BUG_ON(!dbgdev || !dbgdev->pqm || !dbgdev->dev);
> -
> status = pqm_create_queue(dbgdev->pqm, dbgdev->dev, NULL,
> &properties, 0, KFD_QUEUE_TYPE_DIQ,
> &qid);
> @@ -215,8 +209,6 @@ static int dbgdev_register_diq(struct kfd_dbgdev *dbgdev)
>
> static int dbgdev_unregister_nodiq(struct kfd_dbgdev *dbgdev)
> {
> - BUG_ON(!dbgdev || !dbgdev->dev);
> -
> /* disable watch address */
> dbgdev_address_watch_disable_nodiq(dbgdev->dev);
> return 0;
> @@ -227,8 +219,6 @@ static int dbgdev_unregister_diq(struct kfd_dbgdev *dbgdev)
> /* todo - disable address watch */
> int status;
>
> - BUG_ON(!dbgdev || !dbgdev->pqm || !dbgdev->kq);
> -
> status = pqm_destroy_queue(dbgdev->pqm,
> dbgdev->kq->queue->properties.queue_id);
> dbgdev->kq = NULL;
> @@ -245,8 +235,6 @@ static void dbgdev_address_watch_set_registers(
> {
> union ULARGE_INTEGER addr;
>
> - BUG_ON(!adw_info || !addrHi || !addrLo || !cntl);
> -
> addr.quad_part = 0;
> addrHi->u32All = 0;
> addrLo->u32All = 0;
> @@ -287,8 +275,6 @@ static int dbgdev_address_watch_nodiq(struct kfd_dbgdev *dbgdev,
> struct kfd_process_device *pdd;
> unsigned int i;
>
> - BUG_ON(!dbgdev || !dbgdev->dev || !adw_info);
> -
> /* taking the vmid for that process on the safe way using pdd */
> pdd = kfd_get_process_device_data(dbgdev->dev,
> adw_info->process);
> @@ -362,8 +348,6 @@ static int dbgdev_address_watch_diq(struct kfd_dbgdev *dbgdev,
> /* we do not control the vmid in DIQ mode, just a place holder */
> unsigned int vmid = 0;
>
> - BUG_ON(!dbgdev || !dbgdev->dev || !adw_info);
> -
> addrHi.u32All = 0;
> addrLo.u32All = 0;
> cntl.u32All = 0;
> @@ -508,8 +492,6 @@ static int dbgdev_wave_control_set_registers(
> union GRBM_GFX_INDEX_BITS reg_gfx_index;
> struct HsaDbgWaveMsgAMDGen2 *pMsg;
>
> - BUG_ON(!wac_info || !in_reg_sq_cmd || !in_reg_gfx_index);
> -
> reg_sq_cmd.u32All = 0;
> reg_gfx_index.u32All = 0;
> pMsg = &wac_info->dbgWave_msg.DbgWaveMsg.WaveMsgInfoGen2;
> @@ -610,8 +592,6 @@ static int dbgdev_wave_control_diq(struct kfd_dbgdev *dbgdev,
> struct pm4__set_config_reg *packets_vec;
> size_t ib_size = sizeof(struct pm4__set_config_reg) * 3;
>
> - BUG_ON(!dbgdev || !wac_info);
> -
> reg_sq_cmd.u32All = 0;
>
> status = dbgdev_wave_control_set_registers(wac_info, ®_sq_cmd,
> @@ -725,8 +705,6 @@ static int dbgdev_wave_control_nodiq(struct kfd_dbgdev *dbgdev,
> union GRBM_GFX_INDEX_BITS reg_gfx_index;
> struct kfd_process_device *pdd;
>
> - BUG_ON(!dbgdev || !dbgdev->dev || !wac_info);
> -
> reg_sq_cmd.u32All = 0;
>
> /* taking the VMID for that process on the safe way using PDD */
> @@ -851,8 +829,6 @@ int dbgdev_wave_reset_wavefronts(struct kfd_dev *dev, struct kfd_process *p)
> void kfd_dbgdev_init(struct kfd_dbgdev *pdbgdev, struct kfd_dev *pdev,
> enum DBGDEV_TYPE type)
> {
> - BUG_ON(!pdbgdev || !pdev);
> -
> pdbgdev->dev = pdev;
> pdbgdev->kq = NULL;
> pdbgdev->type = type;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.c b/drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.c
> index 210bdc1..2d5555c 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.c
> @@ -44,8 +44,6 @@ struct mutex *kfd_get_dbgmgr_mutex(void)
>
> static void kfd_dbgmgr_uninitialize(struct kfd_dbgmgr *pmgr)
> {
> - BUG_ON(!pmgr);
> -
> kfree(pmgr->dbgdev);
>
> pmgr->dbgdev = NULL;
> @@ -66,7 +64,6 @@ bool kfd_dbgmgr_create(struct kfd_dbgmgr **ppmgr, struct kfd_dev *pdev)
> enum DBGDEV_TYPE type = DBGDEV_TYPE_DIQ;
> struct kfd_dbgmgr *new_buff;
>
> - BUG_ON(!pdev);
> BUG_ON(!pdev->init_complete);
>
> new_buff = kfd_alloc_struct(new_buff);
> @@ -96,8 +93,6 @@ bool kfd_dbgmgr_create(struct kfd_dbgmgr **ppmgr, struct kfd_dev *pdev)
>
> long kfd_dbgmgr_register(struct kfd_dbgmgr *pmgr, struct kfd_process *p)
> {
> - BUG_ON(!p || !pmgr || !pmgr->dbgdev);
> -
> if (pmgr->pasid != 0) {
> pr_debug("H/W debugger is already active using pasid %d\n",
> pmgr->pasid);
> @@ -118,8 +113,6 @@ long kfd_dbgmgr_register(struct kfd_dbgmgr *pmgr, struct kfd_process *p)
>
> long kfd_dbgmgr_unregister(struct kfd_dbgmgr *pmgr, struct kfd_process *p)
> {
> - BUG_ON(!p || !pmgr || !pmgr->dbgdev);
> -
> /* Is the requests coming from the already registered process? */
> if (pmgr->pasid != p->pasid) {
> pr_debug("H/W debugger is not registered by calling pasid %d\n",
> @@ -137,8 +130,6 @@ long kfd_dbgmgr_unregister(struct kfd_dbgmgr *pmgr, struct kfd_process *p)
> long kfd_dbgmgr_wave_control(struct kfd_dbgmgr *pmgr,
> struct dbg_wave_control_info *wac_info)
> {
> - BUG_ON(!pmgr || !pmgr->dbgdev || !wac_info);
> -
> /* Is the requests coming from the already registered process? */
> if (pmgr->pasid != wac_info->process->pasid) {
> pr_debug("H/W debugger support was not registered for requester pasid %d\n",
> @@ -152,9 +143,6 @@ long kfd_dbgmgr_wave_control(struct kfd_dbgmgr *pmgr,
> long kfd_dbgmgr_address_watch(struct kfd_dbgmgr *pmgr,
> struct dbg_address_watch_info *adw_info)
> {
> - BUG_ON(!pmgr || !pmgr->dbgdev || !adw_info);
> -
> -
> /* Is the requests coming from the already registered process? */
> if (pmgr->pasid != adw_info->process->pasid) {
> pr_debug("H/W debugger support was not registered for requester pasid %d\n",
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> index d962342..e28e818 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> @@ -341,8 +341,6 @@ void kgd2kfd_device_exit(struct kfd_dev *kfd)
>
> void kgd2kfd_suspend(struct kfd_dev *kfd)
> {
> - BUG_ON(!kfd);
> -
> if (kfd->init_complete) {
> kfd->dqm->ops.stop(kfd->dqm);
> amd_iommu_set_invalidate_ctx_cb(kfd->pdev, NULL);
> @@ -356,8 +354,6 @@ int kgd2kfd_resume(struct kfd_dev *kfd)
> unsigned int pasid_limit;
> int err;
>
> - BUG_ON(kfd == NULL);
> -
> pasid_limit = kfd_get_pasid_limit();
>
> if (kfd->init_complete) {
> @@ -394,8 +390,6 @@ static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
> {
> unsigned int num_of_bits;
>
> - BUG_ON(!kfd);
> - BUG_ON(!kfd->gtt_mem);
> BUG_ON(buf_size < chunk_size);
> BUG_ON(buf_size == 0);
> BUG_ON(chunk_size == 0);
> @@ -445,8 +439,6 @@ int kfd_gtt_sa_allocate(struct kfd_dev *kfd, unsigned int size,
> {
> unsigned int found, start_search, cur_size;
>
> - BUG_ON(!kfd);
> -
> if (size == 0)
> return -EINVAL;
>
> @@ -551,8 +543,6 @@ int kfd_gtt_sa_free(struct kfd_dev *kfd, struct kfd_mem_obj *mem_obj)
> {
> unsigned int bit;
>
> - BUG_ON(!kfd);
> -
> /* Act like kfree when trying to free a NULL object */
> if (!mem_obj)
> return 0;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> index 68fe6ed..43bc1b5 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> @@ -79,20 +79,17 @@ static bool is_pipe_enabled(struct device_queue_manager *dqm, int mec, int pipe)
>
> unsigned int get_queues_num(struct device_queue_manager *dqm)
> {
> - BUG_ON(!dqm || !dqm->dev);
> return bitmap_weight(dqm->dev->shared_resources.queue_bitmap,
> KGD_MAX_QUEUES);
> }
>
> unsigned int get_queues_per_pipe(struct device_queue_manager *dqm)
> {
> - BUG_ON(!dqm || !dqm->dev);
> return dqm->dev->shared_resources.num_queue_per_pipe;
> }
>
> unsigned int get_pipes_per_mec(struct device_queue_manager *dqm)
> {
> - BUG_ON(!dqm || !dqm->dev);
> return dqm->dev->shared_resources.num_pipe_per_mec;
> }
>
> @@ -152,8 +149,6 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
> {
> int retval = 0;
>
> - BUG_ON(!dqm || !q || !qpd || !allocated_vmid);
> -
> print_queue(q);
>
> mutex_lock(&dqm->lock);
> @@ -257,8 +252,6 @@ static int create_compute_queue_nocpsch(struct device_queue_manager *dqm,
> int retval;
> struct mqd_manager *mqd;
>
> - BUG_ON(!dqm || !q || !qpd);
> -
> mqd = dqm->ops.get_mqd_manager(dqm, KFD_MQD_TYPE_COMPUTE);
> if (!mqd)
> return -ENOMEM;
> @@ -297,8 +290,6 @@ static int destroy_queue_nocpsch(struct device_queue_manager *dqm,
> int retval;
> struct mqd_manager *mqd;
>
> - BUG_ON(!dqm || !q || !q->mqd || !qpd);
> -
> retval = 0;
>
> mutex_lock(&dqm->lock);
> @@ -360,8 +351,6 @@ static int update_queue(struct device_queue_manager *dqm, struct queue *q)
> struct mqd_manager *mqd;
> bool prev_active = false;
>
> - BUG_ON(!dqm || !q || !q->mqd);
> -
> mutex_lock(&dqm->lock);
> mqd = dqm->ops.get_mqd_manager(dqm,
> get_mqd_type_from_queue_type(q->properties.type));
> @@ -397,7 +386,7 @@ static struct mqd_manager *get_mqd_manager_nocpsch(
> {
> struct mqd_manager *mqd;
>
> - BUG_ON(!dqm || type >= KFD_MQD_TYPE_MAX);
> + BUG_ON(type >= KFD_MQD_TYPE_MAX);
>
> pr_debug("mqd type %d\n", type);
>
> @@ -418,8 +407,6 @@ static int register_process_nocpsch(struct device_queue_manager *dqm,
> struct device_process_node *n;
> int retval;
>
> - BUG_ON(!dqm || !qpd);
> -
> n = kzalloc(sizeof(*n), GFP_KERNEL);
> if (!n)
> return -ENOMEM;
> @@ -444,8 +431,6 @@ static int unregister_process_nocpsch(struct device_queue_manager *dqm,
> int retval;
> struct device_process_node *cur, *next;
>
> - BUG_ON(!dqm || !qpd);
> -
> pr_debug("qpd->queues_list is %s\n",
> list_empty(&qpd->queues_list) ? "empty" : "not empty");
>
> @@ -486,8 +471,6 @@ static void init_interrupts(struct device_queue_manager *dqm)
> {
> unsigned int i;
>
> - BUG_ON(!dqm);
> -
> for (i = 0 ; i < get_pipes_per_mec(dqm) ; i++)
> if (is_pipe_enabled(dqm, 0, i))
> dqm->dev->kfd2kgd->init_interrupts(dqm->dev->kgd, i);
> @@ -497,8 +480,6 @@ static int initialize_nocpsch(struct device_queue_manager *dqm)
> {
> int pipe, queue;
>
> - BUG_ON(!dqm);
> -
> pr_debug("num of pipes: %d\n", get_pipes_per_mec(dqm));
>
> dqm->allocated_queues = kcalloc(get_pipes_per_mec(dqm),
> @@ -530,8 +511,6 @@ static void uninitialize_nocpsch(struct device_queue_manager *dqm)
> {
> int i;
>
> - BUG_ON(!dqm);
> -
> BUG_ON(dqm->queue_count > 0 || dqm->processes_count > 0);
>
> kfree(dqm->allocated_queues);
> @@ -629,8 +608,6 @@ static int set_sched_resources(struct device_queue_manager *dqm)
> int i, mec;
> struct scheduling_resources res;
>
> - BUG_ON(!dqm);
> -
> res.vmid_mask = (1 << VMID_PER_DEVICE) - 1;
> res.vmid_mask <<= KFD_VMID_START_OFFSET;
>
> @@ -672,8 +649,6 @@ static int initialize_cpsch(struct device_queue_manager *dqm)
> {
> int retval;
>
> - BUG_ON(!dqm);
> -
> pr_debug("num of pipes: %d\n", get_pipes_per_mec(dqm));
>
> mutex_init(&dqm->lock);
> @@ -693,8 +668,6 @@ static int start_cpsch(struct device_queue_manager *dqm)
> struct device_process_node *node;
> int retval;
>
> - BUG_ON(!dqm);
> -
> retval = 0;
>
> retval = pm_init(&dqm->packets, dqm);
> @@ -739,8 +712,6 @@ static int stop_cpsch(struct device_queue_manager *dqm)
> struct device_process_node *node;
> struct kfd_process_device *pdd;
>
> - BUG_ON(!dqm);
> -
> destroy_queues_cpsch(dqm, true, true);
>
> list_for_each_entry(node, &dqm->queues, list) {
> @@ -757,8 +728,6 @@ static int create_kernel_queue_cpsch(struct device_queue_manager *dqm,
> struct kernel_queue *kq,
> struct qcm_process_device *qpd)
> {
> - BUG_ON(!dqm || !kq || !qpd);
> -
> mutex_lock(&dqm->lock);
> if (dqm->total_queue_count >= max_num_of_queues_per_device) {
> pr_warn("Can't create new kernel queue because %d queues were already created\n",
> @@ -788,8 +757,6 @@ static void destroy_kernel_queue_cpsch(struct device_queue_manager *dqm,
> struct kernel_queue *kq,
> struct qcm_process_device *qpd)
> {
> - BUG_ON(!dqm || !kq);
> -
> mutex_lock(&dqm->lock);
> /* here we actually preempt the DIQ */
> destroy_queues_cpsch(dqm, true, false);
> @@ -821,8 +788,6 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
> int retval;
> struct mqd_manager *mqd;
>
> - BUG_ON(!dqm || !q || !qpd);
> -
> retval = 0;
>
> if (allocate_vmid)
> @@ -880,7 +845,6 @@ int amdkfd_fence_wait_timeout(unsigned int *fence_addr,
> unsigned int fence_value,
> unsigned long timeout)
> {
> - BUG_ON(!fence_addr);
> timeout += jiffies;
>
> while (*fence_addr != fence_value) {
> @@ -909,8 +873,6 @@ static int destroy_queues_cpsch(struct device_queue_manager *dqm,
> enum kfd_preempt_type_filter preempt_type;
> struct kfd_process_device *pdd;
>
> - BUG_ON(!dqm);
> -
> retval = 0;
>
> if (lock)
> @@ -960,8 +922,6 @@ static int execute_queues_cpsch(struct device_queue_manager *dqm, bool lock)
> {
> int retval;
>
> - BUG_ON(!dqm);
> -
> if (lock)
> mutex_lock(&dqm->lock);
>
> @@ -1002,8 +962,6 @@ static int destroy_queue_cpsch(struct device_queue_manager *dqm,
> struct mqd_manager *mqd;
> bool preempt_all_queues;
>
> - BUG_ON(!dqm || !qpd || !q);
> -
> preempt_all_queues = false;
>
> retval = 0;
> @@ -1129,8 +1087,6 @@ struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev)
> {
> struct device_queue_manager *dqm;
>
> - BUG_ON(!dev);
> -
> pr_debug("Loading device queue manager\n");
>
> dqm = kzalloc(sizeof(*dqm), GFP_KERNEL);
> @@ -1195,8 +1151,6 @@ struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev)
>
> void device_queue_manager_uninit(struct device_queue_manager *dqm)
> {
> - BUG_ON(!dqm);
> -
> dqm->ops.uninitialize(dqm);
> kfree(dqm);
> }
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_cik.c
> index a263e2a..43194b4 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_cik.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_cik.c
> @@ -104,8 +104,6 @@ static int register_process_cik(struct device_queue_manager *dqm,
> struct kfd_process_device *pdd;
> unsigned int temp;
>
> - BUG_ON(!dqm || !qpd);
> -
> pdd = qpd_to_pdd(qpd);
>
> /* check if sh_mem_config register already configured */
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c
> index 8c45c86..47ef910 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c
> @@ -110,8 +110,6 @@ static int register_process_vi(struct device_queue_manager *dqm,
> struct kfd_process_device *pdd;
> unsigned int temp;
>
> - BUG_ON(!dqm || !qpd);
> -
> pdd = qpd_to_pdd(qpd);
>
> /* check if sh_mem_config register already configured */
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c b/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c
> index 48018a3..0055270 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c
> @@ -165,8 +165,6 @@ u32 __iomem *kfd_get_kernel_doorbell(struct kfd_dev *kfd,
> {
> u32 inx;
>
> - BUG_ON(!kfd || !doorbell_off);
> -
> mutex_lock(&kfd->doorbell_mutex);
> inx = find_first_zero_bit(kfd->doorbell_available_index,
> KFD_MAX_NUM_OF_QUEUES_PER_PROCESS);
> @@ -196,8 +194,6 @@ void kfd_release_kernel_doorbell(struct kfd_dev *kfd, u32 __iomem *db_addr)
> {
> unsigned int inx;
>
> - BUG_ON(!kfd || !db_addr);
> -
> inx = (unsigned int)(db_addr - kfd->doorbell_kernel_ptr);
>
> mutex_lock(&kfd->doorbell_mutex);
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
> index 47e2e8a..970bc07 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
> @@ -41,7 +41,6 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
> int retval;
> union PM4_MES_TYPE_3_HEADER nop;
>
> - BUG_ON(!kq || !dev);
> BUG_ON(type != KFD_QUEUE_TYPE_DIQ && type != KFD_QUEUE_TYPE_HIQ);
>
> pr_debug("Initializing queue type %d size %d\n", KFD_QUEUE_TYPE_HIQ,
> @@ -180,8 +179,6 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
>
> static void uninitialize(struct kernel_queue *kq)
> {
> - BUG_ON(!kq);
> -
> if (kq->queue->properties.type == KFD_QUEUE_TYPE_HIQ)
> kq->mqd->destroy_mqd(kq->mqd,
> NULL,
> @@ -211,8 +208,6 @@ static int acquire_packet_buffer(struct kernel_queue *kq,
> uint32_t wptr, rptr;
> unsigned int *queue_address;
>
> - BUG_ON(!kq || !buffer_ptr);
> -
> rptr = *kq->rptr_kernel;
> wptr = *kq->wptr_kernel;
> queue_address = (unsigned int *)kq->pq_kernel_addr;
> @@ -252,11 +247,7 @@ static void submit_packet(struct kernel_queue *kq)
> {
> #ifdef DEBUG
> int i;
> -#endif
> -
> - BUG_ON(!kq);
>
> -#ifdef DEBUG
> for (i = *kq->wptr_kernel; i < kq->pending_wptr; i++) {
> pr_debug("0x%2X ", kq->pq_kernel_addr[i]);
> if (i % 15 == 0)
> @@ -272,7 +263,6 @@ static void submit_packet(struct kernel_queue *kq)
>
> static void rollback_packet(struct kernel_queue *kq)
> {
> - BUG_ON(!kq);
> kq->pending_wptr = *kq->queue->properties.write_ptr;
> }
>
> @@ -281,8 +271,6 @@ struct kernel_queue *kernel_queue_init(struct kfd_dev *dev,
> {
> struct kernel_queue *kq;
>
> - BUG_ON(!dev);
> -
> kq = kzalloc(sizeof(*kq), GFP_KERNEL);
> if (!kq)
> return NULL;
> @@ -313,8 +301,6 @@ struct kernel_queue *kernel_queue_init(struct kfd_dev *dev,
>
> void kernel_queue_uninit(struct kernel_queue *kq)
> {
> - BUG_ON(!kq);
> -
> kq->ops.uninitialize(kq);
> kfree(kq);
> }
> @@ -325,8 +311,6 @@ static __attribute__((unused)) void test_kq(struct kfd_dev *dev)
> uint32_t *buffer, i;
> int retval;
>
> - BUG_ON(!dev);
> -
> pr_err("Starting kernel queue test\n");
>
> kq = kernel_queue_init(dev, KFD_QUEUE_TYPE_HIQ);
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
> index dca4fc7..a11477d 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
> @@ -44,8 +44,6 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
> struct cik_mqd *m;
> int retval;
>
> - BUG_ON(!mm || !q || !mqd);
> -
> retval = kfd_gtt_sa_allocate(mm->dev, sizeof(struct cik_mqd),
> mqd_mem_obj);
>
> @@ -113,8 +111,6 @@ static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> int retval;
> struct cik_sdma_rlc_registers *m;
>
> - BUG_ON(!mm || !mqd || !mqd_mem_obj);
> -
> retval = kfd_gtt_sa_allocate(mm->dev,
> sizeof(struct cik_sdma_rlc_registers),
> mqd_mem_obj);
> @@ -138,14 +134,12 @@ static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> static void uninit_mqd(struct mqd_manager *mm, void *mqd,
> struct kfd_mem_obj *mqd_mem_obj)
> {
> - BUG_ON(!mm || !mqd);
> kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
> }
>
> static void uninit_mqd_sdma(struct mqd_manager *mm, void *mqd,
> struct kfd_mem_obj *mqd_mem_obj)
> {
> - BUG_ON(!mm || !mqd);
> kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
> }
>
> @@ -168,8 +162,6 @@ static int update_mqd(struct mqd_manager *mm, void *mqd,
> {
> struct cik_mqd *m;
>
> - BUG_ON(!mm || !q || !mqd);
> -
> m = get_mqd(mqd);
> m->cp_hqd_pq_control = DEFAULT_RPTR_BLOCK_SIZE |
> DEFAULT_MIN_AVAIL_SIZE | PQ_ATC_EN;
> @@ -209,8 +201,6 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
> {
> struct cik_sdma_rlc_registers *m;
>
> - BUG_ON(!mm || !mqd || !q);
> -
> m = get_sdma_mqd(mqd);
> m->sdma_rlc_rb_cntl = ffs(q->queue_size / sizeof(unsigned int)) <<
> SDMA0_RLC0_RB_CNTL__RB_SIZE__SHIFT |
> @@ -296,8 +286,6 @@ static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> struct cik_mqd *m;
> int retval;
>
> - BUG_ON(!mm || !q || !mqd || !mqd_mem_obj);
> -
> retval = kfd_gtt_sa_allocate(mm->dev, sizeof(struct cik_mqd),
> mqd_mem_obj);
>
> @@ -352,8 +340,6 @@ static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
> {
> struct cik_mqd *m;
>
> - BUG_ON(!mm || !q || !mqd);
> -
> m = get_mqd(mqd);
> m->cp_hqd_pq_control = DEFAULT_RPTR_BLOCK_SIZE |
> DEFAULT_MIN_AVAIL_SIZE |
> @@ -391,8 +377,6 @@ struct cik_sdma_rlc_registers *get_sdma_mqd(void *mqd)
> {
> struct cik_sdma_rlc_registers *m;
>
> - BUG_ON(!mqd);
> -
> m = (struct cik_sdma_rlc_registers *)mqd;
>
> return m;
> @@ -403,7 +387,6 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
> {
> struct mqd_manager *mqd;
>
> - BUG_ON(!dev);
> BUG_ON(type >= KFD_MQD_TYPE_MAX);
>
> mqd = kzalloc(sizeof(*mqd), GFP_KERNEL);
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
> index aaaa87a..d638c2c 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
> @@ -106,8 +106,6 @@ static int __update_mqd(struct mqd_manager *mm, void *mqd,
> {
> struct vi_mqd *m;
>
> - BUG_ON(!mm || !q || !mqd);
> -
> m = get_mqd(mqd);
>
> m->cp_hqd_pq_control = 5 << CP_HQD_PQ_CONTROL__RPTR_BLOCK_SIZE__SHIFT |
> @@ -186,7 +184,6 @@ static int destroy_mqd(struct mqd_manager *mm, void *mqd,
> static void uninit_mqd(struct mqd_manager *mm, void *mqd,
> struct kfd_mem_obj *mqd_mem_obj)
> {
> - BUG_ON(!mm || !mqd);
> kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
> }
>
> @@ -236,7 +233,6 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
> {
> struct mqd_manager *mqd;
>
> - BUG_ON(!dev);
> BUG_ON(type >= KFD_MQD_TYPE_MAX);
>
> mqd = kzalloc(sizeof(*mqd), GFP_KERNEL);
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
> index c4030b3..aacd5a3 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
> @@ -58,8 +58,6 @@ static void pm_calc_rlib_size(struct packet_manager *pm,
> unsigned int process_count, queue_count;
> unsigned int map_queue_size;
>
> - BUG_ON(!pm || !rlib_size || !over_subscription);
> -
> process_count = pm->dqm->processes_count;
> queue_count = pm->dqm->queue_count;
>
> @@ -96,9 +94,7 @@ static int pm_allocate_runlist_ib(struct packet_manager *pm,
> {
> int retval;
>
> - BUG_ON(!pm);
> BUG_ON(pm->allocated);
> - BUG_ON(!is_over_subscription);
>
> pm_calc_rlib_size(pm, rl_buffer_size, is_over_subscription);
>
> @@ -123,7 +119,7 @@ static int pm_create_runlist(struct packet_manager *pm, uint32_t *buffer,
> {
> struct pm4_runlist *packet;
>
> - BUG_ON(!pm || !buffer || !ib);
> + BUG_ON(!ib);
>
> packet = (struct pm4_runlist *)buffer;
>
> @@ -148,8 +144,6 @@ static int pm_create_map_process(struct packet_manager *pm, uint32_t *buffer,
> struct queue *cur;
> uint32_t num_queues;
>
> - BUG_ON(!pm || !buffer || !qpd);
> -
> packet = (struct pm4_map_process *)buffer;
>
> memset(buffer, 0, sizeof(struct pm4_map_process));
> @@ -185,8 +179,6 @@ static int pm_create_map_queue_vi(struct packet_manager *pm, uint32_t *buffer,
> struct pm4_mes_map_queues *packet;
> bool use_static = is_static;
>
> - BUG_ON(!pm || !buffer || !q);
> -
> packet = (struct pm4_mes_map_queues *)buffer;
> memset(buffer, 0, sizeof(struct pm4_map_queues));
>
> @@ -247,8 +239,6 @@ static int pm_create_map_queue(struct packet_manager *pm, uint32_t *buffer,
> struct pm4_map_queues *packet;
> bool use_static = is_static;
>
> - BUG_ON(!pm || !buffer || !q);
> -
> packet = (struct pm4_map_queues *)buffer;
> memset(buffer, 0, sizeof(struct pm4_map_queues));
>
> @@ -315,8 +305,6 @@ static int pm_create_runlist_ib(struct packet_manager *pm,
> struct kernel_queue *kq;
> bool is_over_subscription;
>
> - BUG_ON(!pm || !queues || !rl_size_bytes || !rl_gpu_addr);
> -
> rl_wptr = retval = proccesses_mapped = 0;
>
> retval = pm_allocate_runlist_ib(pm, &rl_buffer, rl_gpu_addr,
> @@ -416,8 +404,6 @@ static int pm_create_runlist_ib(struct packet_manager *pm,
>
> int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm)
> {
> - BUG_ON(!dqm);
> -
> pm->dqm = dqm;
> mutex_init(&pm->lock);
> pm->priv_queue = kernel_queue_init(dqm->dev, KFD_QUEUE_TYPE_HIQ);
> @@ -432,8 +418,6 @@ int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm)
>
> void pm_uninit(struct packet_manager *pm)
> {
> - BUG_ON(!pm);
> -
> mutex_destroy(&pm->lock);
> kernel_queue_uninit(pm->priv_queue);
> }
> @@ -444,8 +428,6 @@ int pm_send_set_resources(struct packet_manager *pm,
> struct pm4_set_resources *packet;
> int retval = 0;
>
> - BUG_ON(!pm || !res);
> -
> mutex_lock(&pm->lock);
> pm->priv_queue->ops.acquire_packet_buffer(pm->priv_queue,
> sizeof(*packet) / sizeof(uint32_t),
> @@ -489,8 +471,6 @@ int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues)
> size_t rl_ib_size, packet_size_dwords;
> int retval;
>
> - BUG_ON(!pm || !dqm_queues);
> -
> retval = pm_create_runlist_ib(pm, dqm_queues, &rl_gpu_ib_addr,
> &rl_ib_size);
> if (retval)
> @@ -532,7 +512,7 @@ int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
> int retval;
> struct pm4_query_status *packet;
>
> - BUG_ON(!pm || !fence_address);
> + BUG_ON(!fence_address);
>
> mutex_lock(&pm->lock);
> retval = pm->priv_queue->ops.acquire_packet_buffer(
> @@ -572,8 +552,6 @@ int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type,
> uint32_t *buffer;
> struct pm4_unmap_queues *packet;
>
> - BUG_ON(!pm);
> -
> mutex_lock(&pm->lock);
> retval = pm->priv_queue->ops.acquire_packet_buffer(
> pm->priv_queue,
> @@ -645,8 +623,6 @@ int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type,
>
> void pm_release_ib(struct packet_manager *pm)
> {
> - BUG_ON(!pm);
> -
> mutex_lock(&pm->lock);
> if (pm->allocated) {
> kfd_gtt_sa_free(pm->dqm->dev, pm->ib_buffer_obj);
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
> index d877cda..d030d76 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
> @@ -407,8 +407,6 @@ void kfd_unbind_process_from_device(struct kfd_dev *dev, unsigned int pasid)
> struct kfd_process *p;
> struct kfd_process_device *pdd;
>
> - BUG_ON(!dev);
> -
> /*
> * Look for the process that matches the pasid. If there is no such
> * process, we either released it in amdkfd's own notifier, or there
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
> index 1d056a6..f6ecdff 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
> @@ -32,8 +32,6 @@ static inline struct process_queue_node *get_queue_by_qid(
> {
> struct process_queue_node *pqn;
>
> - BUG_ON(!pqm);
> -
> list_for_each_entry(pqn, &pqm->queues, process_queue_list) {
> if ((pqn->q && pqn->q->properties.queue_id == qid) ||
> (pqn->kq && pqn->kq->queue->properties.queue_id == qid))
> @@ -48,8 +46,6 @@ static int find_available_queue_slot(struct process_queue_manager *pqm,
> {
> unsigned long found;
>
> - BUG_ON(!pqm || !qid);
> -
> found = find_first_zero_bit(pqm->queue_slot_bitmap,
> KFD_MAX_NUM_OF_QUEUES_PER_PROCESS);
>
> @@ -69,8 +65,6 @@ static int find_available_queue_slot(struct process_queue_manager *pqm,
>
> int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p)
> {
> - BUG_ON(!pqm);
> -
> INIT_LIST_HEAD(&pqm->queues);
> pqm->queue_slot_bitmap =
> kzalloc(DIV_ROUND_UP(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS,
> @@ -87,8 +81,6 @@ void pqm_uninit(struct process_queue_manager *pqm)
> int retval;
> struct process_queue_node *pqn, *next;
>
> - BUG_ON(!pqm);
> -
> list_for_each_entry_safe(pqn, next, &pqm->queues, process_queue_list) {
> retval = pqm_destroy_queue(
> pqm,
> @@ -151,8 +143,6 @@ int pqm_create_queue(struct process_queue_manager *pqm,
> int num_queues = 0;
> struct queue *cur;
>
> - BUG_ON(!pqm || !dev || !properties || !qid);
> -
> memset(&q_properties, 0, sizeof(struct queue_properties));
> memcpy(&q_properties, properties, sizeof(struct queue_properties));
> q = NULL;
> @@ -269,7 +259,6 @@ int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid)
>
> dqm = NULL;
>
> - BUG_ON(!pqm);
> retval = 0;
>
> pqn = get_queue_by_qid(pqm, qid);
> @@ -323,8 +312,6 @@ int pqm_update_queue(struct process_queue_manager *pqm, unsigned int qid,
> int retval;
> struct process_queue_node *pqn;
>
> - BUG_ON(!pqm);
> -
> pqn = get_queue_by_qid(pqm, qid);
> if (!pqn) {
> pr_debug("No queue %d exists for update operation\n", qid);
> @@ -350,8 +337,6 @@ struct kernel_queue *pqm_get_kernel_queue(
> {
> struct process_queue_node *pqn;
>
> - BUG_ON(!pqm);
> -
> pqn = get_queue_by_qid(pqm, qid);
> if (pqn && pqn->kq)
> return pqn->kq;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_queue.c
> index 5ad9f6f..a5315d4 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_queue.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_queue.c
> @@ -67,8 +67,6 @@ int init_queue(struct queue **q, const struct queue_properties *properties)
> {
> struct queue *tmp_q;
>
> - BUG_ON(!q);
> -
> tmp_q = kzalloc(sizeof(*tmp_q), GFP_KERNEL);
> if (!tmp_q)
> return -ENOMEM;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
> index 113c1ce..e5486f4 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
> @@ -108,9 +108,6 @@ static int kfd_topology_get_crat_acpi(void *crat_image, size_t *size)
> static void kfd_populated_cu_info_cpu(struct kfd_topology_device *dev,
> struct crat_subtype_computeunit *cu)
> {
> - BUG_ON(!dev);
> - BUG_ON(!cu);
> -
> dev->node_props.cpu_cores_count = cu->num_cpu_cores;
> dev->node_props.cpu_core_id_base = cu->processor_id_low;
> if (cu->hsa_capability & CRAT_CU_FLAGS_IOMMU_PRESENT)
> @@ -123,9 +120,6 @@ static void kfd_populated_cu_info_cpu(struct kfd_topology_device *dev,
> static void kfd_populated_cu_info_gpu(struct kfd_topology_device *dev,
> struct crat_subtype_computeunit *cu)
> {
> - BUG_ON(!dev);
> - BUG_ON(!cu);
> -
> dev->node_props.simd_id_base = cu->processor_id_low;
> dev->node_props.simd_count = cu->num_simd_cores;
> dev->node_props.lds_size_in_kb = cu->lds_size_in_kb;
> @@ -148,8 +142,6 @@ static int kfd_parse_subtype_cu(struct crat_subtype_computeunit *cu)
> struct kfd_topology_device *dev;
> int i = 0;
>
> - BUG_ON(!cu);
> -
> pr_info("Found CU entry in CRAT table with proximity_domain=%d caps=%x\n",
> cu->proximity_domain, cu->hsa_capability);
> list_for_each_entry(dev, &topology_device_list, list) {
> @@ -177,8 +169,6 @@ static int kfd_parse_subtype_mem(struct crat_subtype_memory *mem)
> struct kfd_topology_device *dev;
> int i = 0;
>
> - BUG_ON(!mem);
> -
> pr_info("Found memory entry in CRAT table with proximity_domain=%d\n",
> mem->promixity_domain);
> list_for_each_entry(dev, &topology_device_list, list) {
> @@ -223,8 +213,6 @@ static int kfd_parse_subtype_cache(struct crat_subtype_cache *cache)
> struct kfd_topology_device *dev;
> uint32_t id;
>
> - BUG_ON(!cache);
> -
> id = cache->processor_id_low;
>
> pr_info("Found cache entry in CRAT table with processor_id=%d\n", id);
> @@ -274,8 +262,6 @@ static int kfd_parse_subtype_iolink(struct crat_subtype_iolink *iolink)
> uint32_t id_from;
> uint32_t id_to;
>
> - BUG_ON(!iolink);
> -
> id_from = iolink->proximity_domain_from;
> id_to = iolink->proximity_domain_to;
>
> @@ -323,8 +309,6 @@ static int kfd_parse_subtype(struct crat_subtype_generic *sub_type_hdr)
> struct crat_subtype_iolink *iolink;
> int ret = 0;
>
> - BUG_ON(!sub_type_hdr);
> -
> switch (sub_type_hdr->type) {
> case CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY:
> cu = (struct crat_subtype_computeunit *)sub_type_hdr;
> @@ -368,8 +352,6 @@ static void kfd_release_topology_device(struct kfd_topology_device *dev)
> struct kfd_cache_properties *cache;
> struct kfd_iolink_properties *iolink;
>
> - BUG_ON(!dev);
> -
> list_del(&dev->list);
>
> while (dev->mem_props.next != &dev->mem_props) {
> @@ -763,8 +745,6 @@ static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev)
> struct kfd_cache_properties *cache;
> struct kfd_mem_properties *mem;
>
> - BUG_ON(!dev);
> -
> if (dev->kobj_iolink) {
> list_for_each_entry(iolink, &dev->io_link_props, list)
> if (iolink->kobj) {
> @@ -819,8 +799,6 @@ static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev,
> int ret;
> uint32_t i;
>
> - BUG_ON(!dev);
> -
> /*
> * Creating the sysfs folders
> */
> @@ -1117,8 +1095,6 @@ static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu)
> struct kfd_topology_device *dev;
> struct kfd_topology_device *out_dev = NULL;
>
> - BUG_ON(!gpu);
> -
> list_for_each_entry(dev, &topology_device_list, list)
> if (!dev->gpu && (dev->node_props.simd_count > 0)) {
> dev->gpu = gpu;
> @@ -1143,8 +1119,6 @@ int kfd_topology_add_device(struct kfd_dev *gpu)
> struct kfd_topology_device *dev;
> int res;
>
> - BUG_ON(!gpu);
> -
> gpu_id = kfd_generate_gpu_id(gpu);
>
> pr_debug("Adding new GPU (ID: 0x%x) to topology\n", gpu_id);
> @@ -1210,8 +1184,6 @@ int kfd_topology_remove_device(struct kfd_dev *gpu)
> uint32_t gpu_id;
> int res = -ENODEV;
>
> - BUG_ON(!gpu);
> -
> down_write(&topology_lock);
>
> list_for_each_entry(dev, &topology_device_list, list)
> --
> 2.7.4
>
Good patch!
This patch is:
Reviewed-by: Oded Gabbay <oded.gabbay at gmail.com>
