[PATCH 2/4] net/bnxt: fix sram resource free block list

[Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>]

From: Kishore Padmanabha <kishore.padmanabha@broadcom.com>

The sram resource free did not reset the next block to be used
when the block is not empty. This caused the flows not be created
when max flows limit is reached and you delete one flow and try to
add a new flow. The fix calls the update of the next free block
even when block is not empty.

Fixes: 37ff91c158a3 ("net/bnxt: add SRAM manager model")
Signed-off-by: Kishore Padmanabha <kishore.padmanabha@broadcom.com>
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Michael Baucom <michael.baucom@broadcom.com>
Reviewed-by: Randy Schacher <stuart.schacher@broadcom.com>
---
 drivers/net/bnxt/tf_core/tf_sram_mgr.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/net/bnxt/tf_core/tf_sram_mgr.c b/drivers/net/bnxt/tf_core/tf_sram_mgr.c
index a248ef2ce8..acb3372486 100644
--- a/drivers/net/bnxt/tf_core/tf_sram_mgr.c
+++ b/drivers/net/bnxt/tf_core/tf_sram_mgr.c
@@ -794,17 +794,19 @@ tf_sram_mgr_free(void *sram_handle,
 			TFP_DRV_LOG(ERR, "Free block_id(%d) failed error(%s)\n",
 				    block_id, strerror(-rc));
 		}
-		/* Free local entry regardless
-		 */
+		/* Free local entry regardless */
 		tf_sram_free_block(slice_list, block);
 
-		/* Find the next non-full block in the list
-		 */
-		tf_sram_find_first_not_full_block(slice_list,
-					     parms->slice_size,
-					     &slice_list->first_not_full_block);
+		/* Clear the not full block to set it again */
+		slice_list->first_not_full_block = NULL;
 	}
+	if (slice_list->first_not_full_block)
+		return rc;
 
+	/* set the non full block so it can be used in next alloc */
+	tf_sram_find_first_not_full_block(slice_list,
+					  parms->slice_size,
+					  &slice_list->first_not_full_block);
 	return rc;
 }
 
-- 
2.17.1