From 7cea834d942c2d47ebb81fba0e44d2ce6172c0ae Mon Sep 17 00:00:00 2001
From: Huazhong Tan <tanhuazhong@huawei.com>
Date: Wed, 7 Nov 2018 12:06:13 +0800
Subject: [PATCH] net: hns3: ignore new coming low-level reset while doing
high-level reset
When processing a higher level reset, the pending lower level reset
does not have to be processed anymore, because the higher level
reset is the superset of the lower level reset.
Therefore, when processing an higher level reset, the request of
lower level reset needs to be cleared.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
.../hisilicon/hns3/hns3pf/hclge_main.c | 27 +++++++++++--------
1 file changed, 16 insertions(+), 11 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index b784db0672909..62022d552f5d9 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -2414,20 +2414,25 @@ static enum hnae3_reset_type hclge_get_reset_level(struct hclge_dev *hdev,
enum hnae3_reset_type rst_level = HNAE3_NONE_RESET;
/* return the highest priority reset level amongst all */
- if (test_bit(HNAE3_GLOBAL_RESET, addr))
+ if (test_bit(HNAE3_IMP_RESET, addr)) {
+ rst_level = HNAE3_IMP_RESET;
+ clear_bit(HNAE3_IMP_RESET, addr);
+ clear_bit(HNAE3_GLOBAL_RESET, addr);
+ clear_bit(HNAE3_CORE_RESET, addr);
+ clear_bit(HNAE3_FUNC_RESET, addr);
+ } else if (test_bit(HNAE3_GLOBAL_RESET, addr)) {
rst_level = HNAE3_GLOBAL_RESET;
- else if (test_bit(HNAE3_CORE_RESET, addr))
+ clear_bit(HNAE3_GLOBAL_RESET, addr);
+ clear_bit(HNAE3_CORE_RESET, addr);
+ clear_bit(HNAE3_FUNC_RESET, addr);
+ } else if (test_bit(HNAE3_CORE_RESET, addr)) {
rst_level = HNAE3_CORE_RESET;
- else if (test_bit(HNAE3_IMP_RESET, addr))
- rst_level = HNAE3_IMP_RESET;
- else if (test_bit(HNAE3_FUNC_RESET, addr))
+ clear_bit(HNAE3_CORE_RESET, addr);
+ clear_bit(HNAE3_FUNC_RESET, addr);
+ } else if (test_bit(HNAE3_FUNC_RESET, addr)) {
rst_level = HNAE3_FUNC_RESET;
-
- /* now, clear all other resets */
- clear_bit(HNAE3_GLOBAL_RESET, addr);
- clear_bit(HNAE3_CORE_RESET, addr);
- clear_bit(HNAE3_IMP_RESET, addr);
- clear_bit(HNAE3_FUNC_RESET, addr);
+ clear_bit(HNAE3_FUNC_RESET, addr);
+ }
return rst_level;
}
--
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