diff options
author | Gilad Ben-Yossef <gilad@benyossef.com> | 2017-09-07 12:00:16 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-09-17 17:35:26 +0300 |
commit | 9ba7bdc9d97e99f0b21442fd7a1eee320de83b9b (patch) | |
tree | 65830918e9956fc46c12675c1dfb2e14e8a4703f /drivers/staging/ccree | |
parent | 3b2eb3799eacf6fe4677871c2ffdfc15b794b1e9 (diff) | |
download | linux-9ba7bdc9d97e99f0b21442fd7a1eee320de83b9b.tar.xz |
staging: ccree: remove BUG macro usage
Replace BUG() macro usage that crash the kernel with alternatives
that signal error and/or try to recover.
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/ccree')
-rw-r--r-- | drivers/staging/ccree/ssi_buffer_mgr.c | 18 | ||||
-rw-r--r-- | drivers/staging/ccree/ssi_cipher.c | 1 | ||||
-rw-r--r-- | drivers/staging/ccree/ssi_pm.c | 3 | ||||
-rw-r--r-- | drivers/staging/ccree/ssi_request_mgr.c | 22 |
4 files changed, 24 insertions, 20 deletions
diff --git a/drivers/staging/ccree/ssi_buffer_mgr.c b/drivers/staging/ccree/ssi_buffer_mgr.c index 63936091d524..67c3296e0fd2 100644 --- a/drivers/staging/ccree/ssi_buffer_mgr.c +++ b/drivers/staging/ccree/ssi_buffer_mgr.c @@ -81,11 +81,6 @@ static unsigned int ssi_buffer_mgr_get_sgl_nents( unsigned int nents = 0; while (nbytes != 0) { - if (sg_is_chain(sg_list)) { - SSI_LOG_ERR("Unexpected chained entry " - "in sg (entry =0x%X)\n", nents); - BUG(); - } if (sg_list->length != 0) { nents++; /* get the number of bytes in the last entry */ @@ -854,7 +849,7 @@ static inline int ssi_buffer_mgr_aead_chain_assoc( //if have reached the end of the sgl, then this is unexpected if (!current_sg) { SSI_LOG_ERR("reached end of sg list. unexpected\n"); - BUG(); + return -EINVAL; } sg_index += current_sg->length; mapped_nents++; @@ -1134,10 +1129,9 @@ static inline int ssi_buffer_mgr_aead_chain_data( offset = size_to_skip; - if (!sg_data) { - rc = -EINVAL; - goto chain_data_exit; - } + if (!sg_data) + return -EINVAL; + areq_ctx->src_sgl = req->src; areq_ctx->dst_sgl = req->dst; @@ -1154,7 +1148,7 @@ static inline int ssi_buffer_mgr_aead_chain_data( //if have reached the end of the sgl, then this is unexpected if (!areq_ctx->src_sgl) { SSI_LOG_ERR("reached end of sg list. unexpected\n"); - BUG(); + return -EINVAL; } sg_index += areq_ctx->src_sgl->length; src_mapped_nents--; @@ -1198,7 +1192,7 @@ static inline int ssi_buffer_mgr_aead_chain_data( //if have reached the end of the sgl, then this is unexpected if (!areq_ctx->dst_sgl) { SSI_LOG_ERR("reached end of sg list. unexpected\n"); - BUG(); + return -EINVAL; } sg_index += areq_ctx->dst_sgl->length; dst_mapped_nents--; diff --git a/drivers/staging/ccree/ssi_cipher.c b/drivers/staging/ccree/ssi_cipher.c index ab0349f7a678..a462075c9b12 100644 --- a/drivers/staging/ccree/ssi_cipher.c +++ b/drivers/staging/ccree/ssi_cipher.c @@ -541,7 +541,6 @@ ssi_blkcipher_create_setup_desc( break; default: SSI_LOG_ERR("Unsupported cipher mode (%d)\n", cipher_mode); - BUG(); } } diff --git a/drivers/staging/ccree/ssi_pm.c b/drivers/staging/ccree/ssi_pm.c index 31325e6cd4b4..a50671ae261f 100644 --- a/drivers/staging/ccree/ssi_pm.c +++ b/drivers/staging/ccree/ssi_pm.c @@ -109,7 +109,8 @@ int ssi_power_mgr_runtime_put_suspend(struct device *dev) rc = pm_runtime_put_autosuspend(dev); } else { /* Something wrong happens*/ - BUG(); + SSI_LOG_ERR("request to suspend already suspended queue"); + rc = -EBUSY; } return rc; } diff --git a/drivers/staging/ccree/ssi_request_mgr.c b/drivers/staging/ccree/ssi_request_mgr.c index e5c2f92857f6..97c235973b15 100644 --- a/drivers/staging/ccree/ssi_request_mgr.c +++ b/drivers/staging/ccree/ssi_request_mgr.c @@ -369,11 +369,16 @@ int send_request( enqueue_seq(cc_base, &req_mgr_h->compl_desc, (is_dout ? 0 : 1)); if (unlikely(req_mgr_h->q_free_slots < total_seq_len)) { - /*This means that there was a problem with the resume*/ - BUG(); + /* This situation should never occur. Maybe indicating problem + * with resuming power. Set the free slot count to 0 and hope + * for the best. + */ + SSI_LOG_ERR("HW free slot count mismatch."); + req_mgr_h->q_free_slots = 0; + } else { + /* Update the free slots in HW queue */ + req_mgr_h->q_free_slots -= total_seq_len; } - /* Update the free slots in HW queue */ - req_mgr_h->q_free_slots -= total_seq_len; spin_unlock_bh(&req_mgr_h->hw_lock); @@ -460,8 +465,13 @@ static void proc_completions(struct ssi_drvdata *drvdata) /* Dequeue request */ if (unlikely(request_mgr_handle->req_queue_head == request_mgr_handle->req_queue_tail)) { - SSI_LOG_ERR("Request queue is empty req_queue_head==req_queue_tail==%u\n", request_mgr_handle->req_queue_head); - BUG(); + /* We are supposed to handle a completion but our + * queue is empty. This is not normal. Return and + * hope for the best. + */ + SSI_LOG_ERR("Request queue is empty head == tail %u\n", + request_mgr_handle->req_queue_head); + break; } ssi_req = &request_mgr_handle->req_queue[request_mgr_handle->req_queue_tail]; |