diff mbox series

[net,1/5] net: hns3: fix wrong use of semaphore up

Message ID 20240813141024.1707252-2-shaojijie@huawei.com (mailing list archive)
State Accepted
Commit 8445d9d3c03101859663d34fda747f6a50947556
Delegated to: Netdev Maintainers
Headers show
Series There are some bugfix for the HNS3 ethernet driver | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag present in non-next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 29 this patch: 29
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 1 maintainers not CCed: lanhao@huawei.com
netdev/build_clang success Errors and warnings before: 29 this patch: 29
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 29 this patch: 29
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 20 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 1 this patch: 1
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-08-13--15-00 (tests: 705)

Commit Message

Jijie Shao Aug. 13, 2024, 2:10 p.m. UTC 
From: Jie Wang <wangjie125@huawei.com>

Currently, if hns3 PF or VF FLR reset failed after five times retry,
the reset done process will directly release the semaphore
which has already released in hclge_reset_prepare_general.
This will cause down operation fail.

So this patch fixes it by adding reset state judgement. The up operation is
only called after successful PF FLR reset.

Fixes: 8627bdedc435 ("net: hns3: refactor the precedure of PF FLR")
Fixes: f28368bb4542 ("net: hns3: refactor the procedure of VF FLR")
Signed-off-by: Jie Wang <wangjie125@huawei.com>
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c   | 4 ++--
 drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 82574ce0194f..125e04434611 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -11516,8 +11516,8 @@  static void hclge_reset_done(struct hnae3_ae_dev *ae_dev)
 		dev_err(&hdev->pdev->dev, "fail to rebuild, ret=%d\n", ret);
 
 	hdev->reset_type = HNAE3_NONE_RESET;
-	clear_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
-	up(&hdev->reset_sem);
+	if (test_and_clear_bit(HCLGE_STATE_RST_HANDLING, &hdev->state))
+		up(&hdev->reset_sem);
 }
 
 static void hclge_clear_resetting_state(struct hclge_dev *hdev)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index 3735d2fed11f..094a7c7b5592 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -1747,8 +1747,8 @@  static void hclgevf_reset_done(struct hnae3_ae_dev *ae_dev)
 			 ret);
 
 	hdev->reset_type = HNAE3_NONE_RESET;
-	clear_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
-	up(&hdev->reset_sem);
+	if (test_and_clear_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state))
+		up(&hdev->reset_sem);
 }
 
 static u32 hclgevf_get_fw_version(struct hnae3_handle *handle)