netdev - Subject: [RFC][PATCH 05/11] stmmac: fix several stray endianness bugs

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Message-Id: <E1eXXiq-0002C4-Ii@ZenIV.linux.org.uk>
Date:   Fri, 05 Jan 2018 19:32:08 +0000
From:   Al Viro <viro@....linux.org.uk>
To:     netdev@...r.kernel.org
Cc:     <peppe.cavallaro@...com>, Cavallaro@....linux.org.uk,
        Giuseppe@....linux.org.uk
Subject: Subject: [RFC][PATCH 05/11] stmmac: fix several stray endianness
 bugs


A few places got missed by "net: ethernet: stmmac: change dma descriptors
to __le32" (having been introduced just before the merge of that patch,
AFAICS).  Fix them up...

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
index 2fd8456999f6..b419229d7457 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
@@ -241,12 +241,13 @@ static int dwmac4_rx_check_timestamp(void *desc)
 	u32 own, ctxt;
 	int ret = 1;
 
-	own = p->des3 & RDES3_OWN;
-	ctxt = ((p->des3 & RDES3_CONTEXT_DESCRIPTOR)
+	own = le32_to_cpu(p->des3) & RDES3_OWN;
+	ctxt = ((le32_to_cpu(p->des3) & RDES3_CONTEXT_DESCRIPTOR)
 		>> RDES3_CONTEXT_DESCRIPTOR_SHIFT);
 
 	if (likely(!own && ctxt)) {
-		if ((p->des0 == 0xffffffff) && (p->des1 == 0xffffffff))
+		if ((p->des0 == cpu_to_le32(0xffffffff)) &&
+		    (p->des1 == cpu_to_le32(0xffffffff)))
 			/* Corrupted value */
 			ret = -EINVAL;
 		else
@@ -265,7 +266,7 @@ static int dwmac4_wrback_get_rx_timestamp_status(void *desc, void *next_desc,
 	int ret = -EINVAL;
 
 	/* Get the status from normal w/b descriptor */
-	if (likely(p->des3 & TDES3_RS1V)) {
+	if (likely(p->des3 & cpu_to_le32(TDES3_RS1V))) {
 		if (likely(le32_to_cpu(p->des1) & RDES1_TIMESTAMP_AVAILABLE)) {
 			int i = 0;
 
-- 
2.11.0