From: Xiaolong Ye <xiaolong.ye@intel.com>
Date: Mon, 13 Jan 2020 02:39:37 +0000 (+0800)
Subject: net/i40e/base: fix retrying logic
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=50126939c66692d5b74922e12a9bf0dacfb6618b;p=dpdk.git

net/i40e/base: fix retrying logic

Fixed a bug where driver was breaking out of the loop and
reporting an error without retrying first.

Fixes: 466eec7d6b1a ("net/i40e/base: retry AQC to overcome IRCRead hangs")

Signed-off-by: Marcin Formela <marcin.formela@intel.com>
Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Beilei Xing <beilei.xing@intel.com>
---

diff --git a/drivers/net/i40e/base/i40e_common.c b/drivers/net/i40e/base/i40e_common.c
index 4f87ec9fad..a37e70599d 100644
--- a/drivers/net/i40e/base/i40e_common.c
+++ b/drivers/net/i40e/base/i40e_common.c
@@ -1714,19 +1714,22 @@ enum i40e_status_code i40e_aq_get_phy_capabilities(struct i40e_hw *hw,
 		status = i40e_asq_send_command(hw, &desc, abilities,
 					       abilities_size, cmd_details);
 
-		if (status != I40E_SUCCESS)
-			break;
-
-		if (hw->aq.asq_last_status == I40E_AQ_RC_EIO) {
+		switch (hw->aq.asq_last_status) {
+		case I40E_AQ_RC_EIO:
 			status = I40E_ERR_UNKNOWN_PHY;
 			break;
-		} else if (hw->aq.asq_last_status == I40E_AQ_RC_EAGAIN) {
+		case I40E_AQ_RC_EAGAIN:
 			i40e_msec_delay(1);
 			total_delay++;
 			status = I40E_ERR_TIMEOUT;
+			break;
+		/* also covers I40E_AQ_RC_OK */
+		default:
+			break;
 		}
-	} while ((hw->aq.asq_last_status != I40E_AQ_RC_OK) &&
-		 (total_delay < max_delay));
+
+	} while ((hw->aq.asq_last_status == I40E_AQ_RC_EAGAIN) &&
+		(total_delay < max_delay));
 
 	if (status != I40E_SUCCESS)
 		return status;