qed: Fix reading stale configuration information

Configuration information read at driver load can become stale after it is
updated. Mark information as not valid and re-populate when this happens.

Signed-off-by: Denis Bolotin <denis.bolotin@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/qlogic/qed/qed.h b/drivers/net/ethernet/qlogic/qed/qed.h
index 00db340..1dfaccd 100644 (file)
--- a/drivers/net/ethernet/qlogic/qed/qed.h
+++ b/drivers/net/ethernet/qlogic/qed/qed.h
@@ -502,6 +502,7 @@ enum BAR_ID {
 struct qed_nvm_image_info {
        u32 num_images;
        struct bist_nvm_image_att *image_att;
+       bool valid;
 };
 
 #define DRV_MODULE_VERSION                   \

diff --git a/drivers/net/ethernet/qlogic/qed/qed_mcp.c b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
index 4e0b443..9d9e533 100644 (file)
--- a/drivers/net/ethernet/qlogic/qed/qed_mcp.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
@@ -592,6 +592,9 @@ int qed_mcp_nvm_wr_cmd(struct qed_hwfn *p_hwfn,
        *o_mcp_resp = mb_params.mcp_resp;
        *o_mcp_param = mb_params.mcp_param;
 
+       /* nvm_info needs to be updated */
+       p_hwfn->nvm_info.valid = false;
+
        return 0;
 }
 
@@ -2555,11 +2558,14 @@ int qed_mcp_bist_nvm_get_image_att(struct qed_hwfn *p_hwfn,
 
 int qed_mcp_nvm_info_populate(struct qed_hwfn *p_hwfn)
 {
-       struct qed_nvm_image_info *nvm_info = &p_hwfn->nvm_info;
+       struct qed_nvm_image_info nvm_info;
        struct qed_ptt *p_ptt;
        int rc;
        u32 i;
 
+       if (p_hwfn->nvm_info.valid)
+               return 0;
+
        p_ptt = qed_ptt_acquire(p_hwfn);
        if (!p_ptt) {
                DP_ERR(p_hwfn, "failed to acquire ptt\n");
@@ -2567,29 +2573,29 @@ int qed_mcp_nvm_info_populate(struct qed_hwfn *p_hwfn)
        }
 
        /* Acquire from MFW the amount of available images */
-       nvm_info->num_images = 0;
+       nvm_info.num_images = 0;
        rc = qed_mcp_bist_nvm_get_num_images(p_hwfn,
-                                            p_ptt, &nvm_info->num_images);
+                                            p_ptt, &nvm_info.num_images);
        if (rc == -EOPNOTSUPP) {
                DP_INFO(p_hwfn, "DRV_MSG_CODE_BIST_TEST is not supported\n");
                goto out;
-       } else if (rc || !nvm_info->num_images) {
+       } else if (rc || !nvm_info.num_images) {
                DP_ERR(p_hwfn, "Failed getting number of images\n");
                goto err0;
        }
 
-       nvm_info->image_att = kmalloc_array(nvm_info->num_images,
-                                           sizeof(struct bist_nvm_image_att),
-                                           GFP_KERNEL);
-       if (!nvm_info->image_att) {
+       nvm_info.image_att = kmalloc_array(nvm_info.num_images,
+                                          sizeof(struct bist_nvm_image_att),
+                                          GFP_KERNEL);
+       if (!nvm_info.image_att) {
                rc = -ENOMEM;
                goto err0;
        }
 
        /* Iterate over images and get their attributes */
-       for (i = 0; i < nvm_info->num_images; i++) {
+       for (i = 0; i < nvm_info.num_images; i++) {
                rc = qed_mcp_bist_nvm_get_image_att(p_hwfn, p_ptt,
-                                                   &nvm_info->image_att[i], i);
+                                                   &nvm_info.image_att[i], i);
                if (rc) {
                        DP_ERR(p_hwfn,
                               "Failed getting image index %d attributes\n", i);
@@ -2597,14 +2603,22 @@ int qed_mcp_nvm_info_populate(struct qed_hwfn *p_hwfn)
                }
 
                DP_VERBOSE(p_hwfn, QED_MSG_SP, "image index %d, size %x\n", i,
-                          nvm_info->image_att[i].len);
+                          nvm_info.image_att[i].len);
        }
 out:
+       /* Update hwfn's nvm_info */
+       if (nvm_info.num_images) {
+               p_hwfn->nvm_info.num_images = nvm_info.num_images;
+               kfree(p_hwfn->nvm_info.image_att);
+               p_hwfn->nvm_info.image_att = nvm_info.image_att;
+               p_hwfn->nvm_info.valid = true;
+       }
+
        qed_ptt_release(p_hwfn, p_ptt);
        return 0;
 
 err1:
-       kfree(nvm_info->image_att);
+       kfree(nvm_info.image_att);
 err0:
        qed_ptt_release(p_hwfn, p_ptt);
        return rc;
@@ -2641,6 +2655,7 @@ qed_mcp_get_nvm_image_att(struct qed_hwfn *p_hwfn,
                return -EINVAL;
        }
 
+       qed_mcp_nvm_info_populate(p_hwfn);
        for (i = 0; i < p_hwfn->nvm_info.num_images; i++)
                if (type == p_hwfn->nvm_info.image_att[i].image_type)
                        break;