[PATCH (linux-sti-4.1)] stmmac: fix tx prepare for normal desc

[Giuseppe Cavallaro]

This patch fixes a bug inside when use the normal descriptors.
While preparing the tx descriptor the frame size was not
properly set.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@xxxxxx>
---
 drivers/net/ethernet/stmicro/stmmac/norm_desc.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
index e13228f..432b3f1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
@@ -197,13 +197,15 @@ static void ndesc_prepare_tx_desc(struct dma_desc *p, int is_fs, int len,
 				  bool csum_flag, int mode, bool tx_own,
 				  bool ls)
 {
-	unsigned int tdes1 = p->des1;
+	unsigned int tdes1;
 
 	if (mode == STMMAC_CHAIN_MODE)
 		norm_set_tx_desc_len_on_chain(p, len);
 	else
 		norm_set_tx_desc_len_on_ring(p, len);
 
+	tdes1 = p->des1;
+
 	if (is_fs)
 		tdes1 |= TDES1_FIRST_SEGMENT;
 	else
-- 
1.7.4.4


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