[dpdk-dev] [PATCH 05/17] net/qede/base: add check for DMA engine state
Rasesh Mody
rasesh.mody at cavium.com
Sat Oct 7 08:31:00 CEST 2017
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
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