From 1196a888c9b1c17ff636cae4c79122d614906791 Mon Sep 17 00:00:00 2001 From: Peng Li Date: Thu, 20 Dec 2018 11:52:00 +0800 Subject: [PATCH] net: hns3: fix a bug caused by udelay udelay() in driver may always occupancy processor. If there is only one cpu in system, the VF driver may initialize fail when insmod PF and VF driver in the same system. This patch use msleep() to free cpu when VF wait PF message. Signed-off-by: Peng Li Signed-off-by: David S. Miller Gbp-Pq: Topic bugfix/arm64/huawei-taishan Gbp-Pq: Name 0024-net-hns3-fix-a-bug-caused-by-udelay.patch --- drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c index e9d5a4f9630..49913184004 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c @@ -26,7 +26,7 @@ static int hclgevf_get_mbx_resp(struct hclgevf_dev *hdev, u16 code0, u16 code1, u8 *resp_data, u16 resp_len) { #define HCLGEVF_MAX_TRY_TIMES 500 -#define HCLGEVF_SLEEP_USCOEND 1000 +#define HCLGEVF_SLEEP_USECOND 1000 struct hclgevf_mbx_resp_status *mbx_resp; u16 r_code0, r_code1; int i = 0; @@ -40,7 +40,7 @@ static int hclgevf_get_mbx_resp(struct hclgevf_dev *hdev, u16 code0, u16 code1, } while ((!hdev->mbx_resp.received_resp) && (i < HCLGEVF_MAX_TRY_TIMES)) { - udelay(HCLGEVF_SLEEP_USCOEND); + usleep_range(HCLGEVF_SLEEP_USECOND, HCLGEVF_SLEEP_USECOND * 2); i++; } -- 2.30.2