[PATCH v2 3/5] crypto: hisilicon/sgl - add some dfx logs

[Kai Ye]

Add some dfx logs in some abnormal exit situations.

Signed-off-by: Kai Ye <yeka...@huawei.com>
---
 drivers/crypto/hisilicon/sgl.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/hisilicon/sgl.c b/drivers/crypto/hisilicon/sgl.c
index b8a811f..d04e551 100644
--- a/drivers/crypto/hisilicon/sgl.c
+++ b/drivers/crypto/hisilicon/sgl.c
@@ -90,8 +90,10 @@ struct hisi_acc_sgl_pool *hisi_acc_create_sgl_pool(struct 
device *dev,
                block[i].sgl = dma_alloc_coherent(dev, block_size,
                                                  &block[i].sgl_dma,
                                                  GFP_KERNEL);
-               if (!block[i].sgl)
+               if (!block[i].sgl) {
+                       dev_err(dev, "Fail to allocate hw SG buffer!\n");
                        goto err_free_mem;
+               }
 
                block[i].size = block_size;
        }
@@ -100,8 +102,10 @@ struct hisi_acc_sgl_pool *hisi_acc_create_sgl_pool(struct 
device *dev,
                block[i].sgl = dma_alloc_coherent(dev, remain_sgl * sgl_size,
                                                  &block[i].sgl_dma,
                                                  GFP_KERNEL);
-               if (!block[i].sgl)
+               if (!block[i].sgl) {
+                       dev_err(dev, "Fail to allocate remained hw SG 
buffer!\n");
                        goto err_free_mem;
+               }
 
                block[i].size = remain_sgl * sgl_size;
        }
@@ -216,16 +220,19 @@ hisi_acc_sg_buf_map_to_hw_sgl(struct device *dev,
        sg_n = sg_nents(sgl);
 
        sg_n_mapped = dma_map_sg(dev, sgl, sg_n, DMA_BIDIRECTIONAL);
-       if (!sg_n_mapped)
+       if (!sg_n_mapped) {
+               dev_err(dev, "DMA mapping for SG error!\n");
                return ERR_PTR(-EINVAL);
+       }
 
        if (sg_n_mapped > pool->sge_nr) {
-               dma_unmap_sg(dev, sgl, sg_n, DMA_BIDIRECTIONAL);
+               dev_err(dev, "the number of entries in input scatterlist is 
bigger than SGL pool setting.\n");
                return ERR_PTR(-EINVAL);
        }
 
        curr_hw_sgl = acc_get_sgl(pool, index, &curr_sgl_dma);
        if (IS_ERR(curr_hw_sgl)) {
+               dev_err(dev, "Get SGL error!\n");
                dma_unmap_sg(dev, sgl, sg_n, DMA_BIDIRECTIONAL);
                return ERR_PTR(-ENOMEM);
 
-- 
2.8.1