[dpdk-dev] [PATCH 05/17] net/qede/base: add check for DMA engine state

[Rasesh Mody]

Check DMA engine state to verify it is not called before it is initialized

Signed-off-by: Rasesh Mody <rasesh.mody at cavium.com>
---
 drivers/net/qede/base/ecore_hw.c |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/qede/base/ecore_hw.c b/drivers/net/qede/base/ecore_hw.c
index d6217d8..bc0138f 100644
--- a/drivers/net/qede/base/ecore_hw.c
+++ b/drivers/net/qede/base/ecore_hw.c
@@ -789,6 +789,15 @@ static enum _ecore_status_t ecore_dmae_operation_wait(struct ecore_hwfn *p_hwfn)
 		return ECORE_SUCCESS;
 	}
 
+	if (!cmd) {
+		DP_NOTICE(p_hwfn, true,
+			  "ecore_dmae_execute_sub_operation failed. Invalid state. source_addr 0x%lx, destination addr 0x%lx, size_in_dwords 0x%x\n",
+			  (unsigned long)src_addr,
+			  (unsigned long)dst_addr,
+			  length_cur);
+		return ECORE_INVAL;
+	}
+
 	ecore_dmae_opcode(p_hwfn,
 			  (src_type == ECORE_DMAE_ADDRESS_GRC),
 			  (dst_type == ECORE_DMAE_ADDRESS_GRC), p_params);
-- 
1.7.10.3