netdev - [PATCH (net.git)] stmmac: display the descriptors if DES0 = 0

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Message-ID: <1476950488-24923-1-git-send-email-peppe.cavallaro@st.com>
Date:   Thu, 20 Oct 2016 10:01:28 +0200
From:   Giuseppe Cavallaro <peppe.cavallaro@...com>
To:     <netdev@...r.kernel.org>
CC:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre TORGUE <alexandre.torgue@...com>
Subject: [PATCH (net.git)] stmmac: display the descriptors if DES0 = 0

It makes sense to display the descriptors even if 
DES0 is zero. This helps for example in case of it
is needed to dump rx write-back descriptors to get
timestamp status.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@...com>
Cc: Alexandre TORGUE <alexandre.torgue@...com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
index 4ec7397..a1b17cd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
@@ -347,10 +347,9 @@ static void dwmac4_display_ring(void *head, unsigned int size, bool rx)
 	pr_info("%s descriptor ring:\n", rx ? "RX" : "TX");
 
 	for (i = 0; i < size; i++) {
-		if (p->des0)
-			pr_info("%d [0x%x]: 0x%x 0x%x 0x%x 0x%x\n",
-				i, (unsigned int)virt_to_phys(p),
-				p->des0, p->des1, p->des2, p->des3);
+		pr_info("%d [0x%x]: 0x%x 0x%x 0x%x 0x%x\n",
+			i, (unsigned int)virt_to_phys(p),
+			p->des0, p->des1, p->des2, p->des3);
 		p++;
 	}
 }
-- 
2.7.4