netdev - [PATCH net 3/4] bnxt_en: free hwrm resources, if driver probe fails.

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Date:   Fri,  5 Oct 2018 00:26:02 -0400
From:   Michael Chan <michael.chan@...adcom.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org
Subject: [PATCH net 3/4] bnxt_en: free hwrm resources, if driver probe fails.

From: Venkat Duvvuru <venkatkumar.duvvuru@...adcom.com>

When the driver probe fails, all the resources that were allocated prior
to the failure must be freed. However, hwrm dma response memory is not
getting freed.

This patch fixes the problem described above.

Fixes: c0c050c58d84 ("bnxt_en: New Broadcom ethernet driver.")
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 2564a92..3718984 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -3017,10 +3017,11 @@ static void bnxt_free_hwrm_resources(struct bnxt *bp)
 {
 	struct pci_dev *pdev = bp->pdev;
 
-	dma_free_coherent(&pdev->dev, PAGE_SIZE, bp->hwrm_cmd_resp_addr,
-			  bp->hwrm_cmd_resp_dma_addr);
-
-	bp->hwrm_cmd_resp_addr = NULL;
+	if (bp->hwrm_cmd_resp_addr) {
+		dma_free_coherent(&pdev->dev, PAGE_SIZE, bp->hwrm_cmd_resp_addr,
+				  bp->hwrm_cmd_resp_dma_addr);
+		bp->hwrm_cmd_resp_addr = NULL;
+	}
 }
 
 static int bnxt_alloc_hwrm_resources(struct bnxt *bp)
@@ -9057,6 +9058,7 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	bnxt_clear_int_mode(bp);
 
 init_err_pci_clean:
+	bnxt_free_hwrm_resources(bp);
 	bnxt_cleanup_pci(bp);
 
 init_err_free:
-- 
2.5.1