[PATCH 1/3] common/cnxk: check return value for error

[Gowrishankar Muthukrishnan]

This patch fixes coverity issue by adding checks on return values.

Coverity issue: 373628, 374858, 370213, 370215
Fixes: af75aac78978 ("common/cnxk: support telemetry for NIX")
Fixes: d61138d4f0e ("drivers: remove direct access to interrupt handle")
Fixes: fcdef46b669 ("common/cnxk: support NIX TM debug and misc utils")
Fixes: df405df95ee ("common/cnxk: add NIX TM helper to alloc/free resource")

Signed-off-by: Gowrishankar Muthukrishnan <gmuthukri...@marvell.com>
---
 drivers/common/cnxk/cnxk_telemetry_nix.c | 3 +++
 drivers/common/cnxk/roc_irq.c            | 5 ++++-
 drivers/common/cnxk/roc_nix_debug.c      | 4 +++-
 drivers/common/cnxk/roc_nix_tm.c         | 6 ++++--
 4 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/common/cnxk/cnxk_telemetry_nix.c 
b/drivers/common/cnxk/cnxk_telemetry_nix.c
index df6458039d..4119e9ee4f 100644
--- a/drivers/common/cnxk/cnxk_telemetry_nix.c
+++ b/drivers/common/cnxk/cnxk_telemetry_nix.c
@@ -765,6 +765,9 @@ cnxk_nix_tel_handle_info_x(const char *cmd, const char 
*params,
 
        plt_strlcpy(buf, params, PCI_PRI_STR_SIZE + 1);
        name = strtok(buf, ",");
+       if (name == NULL)
+               goto exit;
+
        param = strtok(NULL, "\0");
 
        node = nix_tel_node_get_by_pcidev_name(name);
diff --git a/drivers/common/cnxk/roc_irq.c b/drivers/common/cnxk/roc_irq.c
index 7a24297d72..010b121176 100644
--- a/drivers/common/cnxk/roc_irq.c
+++ b/drivers/common/cnxk/roc_irq.c
@@ -160,7 +160,10 @@ dev_irq_register(struct plt_intr_handle *intr_handle, 
plt_intr_callback_fn cb,
                return rc;
        }
 
-       plt_intr_efds_index_set(intr_handle, vec, fd);
+       rc = plt_intr_efds_index_set(intr_handle, vec, fd);
+       if (rc)
+               return rc;
+
        nb_efd = (vec > (uint32_t)plt_intr_nb_efd_get(intr_handle)) ?
                vec : (uint32_t)plt_intr_nb_efd_get(intr_handle);
        plt_intr_nb_efd_set(intr_handle, nb_efd);
diff --git a/drivers/common/cnxk/roc_nix_debug.c 
b/drivers/common/cnxk/roc_nix_debug.c
index d5143882f5..1ae045172e 100644
--- a/drivers/common/cnxk/roc_nix_debug.c
+++ b/drivers/common/cnxk/roc_nix_debug.c
@@ -52,7 +52,9 @@ nix_bitmap_dump(struct plt_bitmap *bmp)
        int i;
 
        plt_bitmap_scan_init(bmp);
-       plt_bitmap_scan(bmp, &pos, &slab);
+       if (!plt_bitmap_scan(bmp, &pos, &slab))
+               return;
+
        start_pos = pos;
 
        nix_dump_no_nl("  \t\t[");
diff --git a/drivers/common/cnxk/roc_nix_tm.c b/drivers/common/cnxk/roc_nix_tm.c
index a0448bec61..517502b1af 100644
--- a/drivers/common/cnxk/roc_nix_tm.c
+++ b/drivers/common/cnxk/roc_nix_tm.c
@@ -1016,8 +1016,10 @@ nix_tm_assign_hw_id(struct nix *nix, struct nix_tm_node 
*parent,
                        return -EFAULT;
                }
 
-               if (!slab)
-                       plt_bitmap_scan(bmp, &pos, &slab);
+               if (!slab) {
+                       if (!plt_bitmap_scan(bmp, &pos, &slab))
+                               return -ENOENT;
+               }
 
                if (child->priority == parent->rr_prio && spare_schq != -1) {
                        /* Use spare schq first if present */
-- 
2.25.1