Add print for some error branches.

Signed-off-by: Yang Shen <shenyan...@huawei.com>
Reviewed-by: Zhou Wang <wangzh...@hisilicon.com>
---
 drivers/crypto/hisilicon/zip/zip_crypto.c | 68 +++++++++++++++++++++++--------
 drivers/crypto/hisilicon/zip/zip_main.c   |  8 ++--
 2 files changed, 56 insertions(+), 20 deletions(-)

diff --git a/drivers/crypto/hisilicon/zip/zip_crypto.c 
b/drivers/crypto/hisilicon/zip/zip_crypto.c
index c2ea849..7aa8a55 100644
--- a/drivers/crypto/hisilicon/zip/zip_crypto.c
+++ b/drivers/crypto/hisilicon/zip/zip_crypto.c
@@ -146,7 +146,7 @@ static int hisi_zip_start_qp(struct hisi_qp *qp, struct 
hisi_zip_qp_ctx *ctx,
 
        ret = hisi_qm_start_qp(qp, 0);
        if (ret < 0) {
-               dev_err(dev, "start qp failed!\n");
+               dev_err(dev, "Start qp failed (%d)!\n", ret);
                return ret;
        }
 
@@ -169,7 +169,7 @@ static int hisi_zip_ctx_init(struct hisi_zip_ctx 
*hisi_zip_ctx, u8 req_type, int
 
        ret = zip_create_qps(qps, HZIP_CTX_Q_NUM, node);
        if (ret) {
-               pr_err("Can not create zip qps!\n");
+               pr_err("Can not create zip qps (%d)!\n", ret);
                return -ENODEV;
        }
 
@@ -380,19 +380,28 @@ static int hisi_zip_acomp_init(struct crypto_acomp *tfm)
 {
        const char *alg_name = crypto_tfm_alg_name(&tfm->base);
        struct hisi_zip_ctx *ctx = crypto_tfm_ctx(&tfm->base);
+       struct device *dev;
        int ret;
 
        ret = hisi_zip_ctx_init(ctx, COMP_NAME_TO_TYPE(alg_name), 
tfm->base.node);
-       if (ret)
+       if (ret) {
+               pr_err("Init ctx failed (%d)!\n", ret);
                return ret;
+       }
+
+       dev = &ctx->qp_ctx[0].qp->qm->pdev->dev;
 
        ret = hisi_zip_create_req_q(ctx);
-       if (ret)
+       if (ret) {
+               dev_err(dev, "Create request queue failed (%d)!\n", ret);
                goto err_ctx_exit;
+       }
 
        ret = hisi_zip_create_sgl_pool(ctx);
-       if (ret)
+       if (ret) {
+               dev_err(dev, "Create sgl pool failed (%d)!\n", ret);
                goto err_release_req_q;
+       }
 
        hisi_zip_set_acomp_cb(ctx, hisi_zip_acomp_cb);
 
@@ -422,8 +431,10 @@ static int add_comp_head(struct scatterlist *dst, u8 
req_type)
        int ret;
 
        ret = sg_copy_from_buffer(dst, sg_nents(dst), head, head_size);
-       if (ret != head_size)
+       if (ret != head_size) {
+               pr_err("The head size of buffer is wrong (%d)!\n", ret);
                return -ENOMEM;
+       }
 
        return head_size;
 }
@@ -445,7 +456,7 @@ static size_t get_comp_head_size(struct scatterlist *src, 
u8 req_type)
        case HZIP_ALG_TYPE_GZIP:
                return get_gzip_head_size(src);
        default:
-               pr_err("request type does not support!\n");
+               pr_err("Request type does not support!\n");
                return -EINVAL;
        }
 }
@@ -464,7 +475,7 @@ static struct hisi_zip_req *hisi_zip_create_req(struct 
acomp_req *req,
        req_id = find_first_zero_bit(req_q->req_bitmap, req_q->size);
        if (req_id >= req_q->size) {
                write_unlock(&req_q->req_lock);
-               dev_dbg(&qp_ctx->qp->qm->pdev->dev, "req cache is full!\n");
+               dev_dbg(&qp_ctx->qp->qm->pdev->dev, "Req cache is full!\n");
                return ERR_PTR(-EBUSY);
        }
        set_bit(req_id, req_q->req_bitmap);
@@ -504,14 +515,19 @@ static int hisi_zip_do_work(struct hisi_zip_req *req,
 
        req->hw_src = hisi_acc_sg_buf_map_to_hw_sgl(dev, a_req->src, pool,
                                                    req->req_id << 1, &input);
-       if (IS_ERR(req->hw_src))
+       if (IS_ERR(req->hw_src)) {
+               dev_err(dev, "The src map to hw SGL failed (%ld)!\n",
+                       PTR_ERR(req->hw_src));
                return PTR_ERR(req->hw_src);
+       }
        req->dma_src = input;
 
        req->hw_dst = hisi_acc_sg_buf_map_to_hw_sgl(dev, a_req->dst, pool,
                                                    (req->req_id << 1) + 1,
                                                    &output);
        if (IS_ERR(req->hw_dst)) {
+               dev_err(dev, "The dst map to hw SGL failed (%ld)!\n",
+                       PTR_ERR(req->hw_dst));
                ret = PTR_ERR(req->hw_dst);
                goto err_unmap_input;
        }
@@ -527,6 +543,7 @@ static int hisi_zip_do_work(struct hisi_zip_req *req,
        ret = hisi_qp_send(qp, &zip_sqe);
        if (ret < 0) {
                atomic64_inc(&dfx->send_busy_cnt);
+               dev_dbg_ratelimited(dev, "Send task message failed!\n");
                goto err_unmap_output;
        }
 
@@ -543,22 +560,32 @@ static int hisi_zip_acompress(struct acomp_req *acomp_req)
 {
        struct hisi_zip_ctx *ctx = crypto_tfm_ctx(acomp_req->base.tfm);
        struct hisi_zip_qp_ctx *qp_ctx = &ctx->qp_ctx[HZIP_QPC_COMP];
+       struct device *dev = &qp_ctx->qp->qm->pdev->dev;
        struct hisi_zip_req *req;
        int head_size;
        int ret;
 
        /* let's output compression head now */
        head_size = add_comp_head(acomp_req->dst, qp_ctx->qp->req_type);
-       if (head_size < 0)
-               return -ENOMEM;
+       if (head_size < 0) {
+               dev_err_ratelimited(dev, "Add comp head failed (%d)!\n",
+                                   head_size);
+               return head_size;
+       }
 
        req = hisi_zip_create_req(acomp_req, qp_ctx, (size_t)head_size, true);
-       if (IS_ERR(req))
+       if (IS_ERR(req)) {
+               dev_err_ratelimited(dev, "Create request before compress failed 
(%ld)!\n",
+                                   PTR_ERR(req));
                return PTR_ERR(req);
+       }
 
        ret = hisi_zip_do_work(req, qp_ctx);
-       if (ret != -EINPROGRESS)
+       if (ret != -EINPROGRESS) {
+               dev_err_ratelimited(dev, "Do compress work failed (%d)!\n",
+                                   ret);
                hisi_zip_remove_req(qp_ctx, req);
+       }
 
        return ret;
 }
@@ -567,6 +594,7 @@ static int hisi_zip_adecompress(struct acomp_req *acomp_req)
 {
        struct hisi_zip_ctx *ctx = crypto_tfm_ctx(acomp_req->base.tfm);
        struct hisi_zip_qp_ctx *qp_ctx = &ctx->qp_ctx[HZIP_QPC_DECOMP];
+       struct device *dev = &qp_ctx->qp->qm->pdev->dev;
        struct hisi_zip_req *req;
        size_t head_size;
        int ret;
@@ -574,12 +602,18 @@ static int hisi_zip_adecompress(struct acomp_req 
*acomp_req)
        head_size = get_comp_head_size(acomp_req->src, qp_ctx->qp->req_type);
 
        req = hisi_zip_create_req(acomp_req, qp_ctx, head_size, false);
-       if (IS_ERR(req))
+       if (IS_ERR(req)) {
+               dev_err_ratelimited(dev, "Create request before decompress 
failed (%ld)!\n",
+                                   PTR_ERR(req));
                return PTR_ERR(req);
+       }
 
        ret = hisi_zip_do_work(req, qp_ctx);
-       if (ret != -EINPROGRESS)
+       if (ret != -EINPROGRESS) {
+               dev_err_ratelimited(dev, "Do decompress work failed (%d)!\n",
+                                   ret);
                hisi_zip_remove_req(qp_ctx, req);
+       }
 
        return ret;
 }
@@ -618,13 +652,13 @@ int hisi_zip_register_to_crypto(void)
 
        ret = crypto_register_acomp(&hisi_zip_acomp_zlib);
        if (ret) {
-               pr_err("Zlib acomp algorithm registration failed\n");
+               pr_err("Zlib acomp algorithm registration failed (%d)!\n", ret);
                return ret;
        }
 
        ret = crypto_register_acomp(&hisi_zip_acomp_gzip);
        if (ret) {
-               pr_err("Gzip acomp algorithm registration failed\n");
+               pr_err("Gzip acomp algorithm registration failed (%d)!\n", ret);
                crypto_unregister_acomp(&hisi_zip_acomp_zlib);
        }
 
diff --git a/drivers/crypto/hisilicon/zip/zip_main.c 
b/drivers/crypto/hisilicon/zip/zip_main.c
index 1883d1b..7697fa5 100644
--- a/drivers/crypto/hisilicon/zip/zip_main.c
+++ b/drivers/crypto/hisilicon/zip/zip_main.c
@@ -807,18 +807,20 @@ static int hisi_zip_probe(struct pci_dev *pdev, const 
struct pci_device_id *id)
 
        ret = hisi_zip_debugfs_init(qm);
        if (ret)
-               dev_err(&pdev->dev, "Failed to init debugfs (%d)!\n", ret);
+               pci_err(pdev, "Failed to init debugfs (%d)!\n", ret);
 
        ret = hisi_qm_alg_register(qm, &zip_devices);
        if (ret < 0) {
-               pci_err(pdev, "Failed to register driver to crypto.\n");
+               pci_err(pdev, "Failed to register driver to crypto!\n");
                goto err_qm_stop;
        }
 
        if (qm->uacce) {
                ret = uacce_register(qm->uacce);
-               if (ret)
+               if (ret) {
+                       pci_err(pdev, "Failed to register uacce (%d)!\n", ret);
                        goto err_qm_alg_unregister;
+               }
        }
 
        if (qm->fun_type == QM_HW_PF && vfs_num > 0) {
-- 
2.7.4

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