This is a note to let you know that I've just added the patch titled
net: stmmac: RX buffer size must be 16 byte aligned
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-stmmac-rx-buffer-size-must-be-16-byte-aligned.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ab94e37305a382f6caede8ca55198987b0c85605
Author: Jose Abreu <Jose.Abreu@xxxxxxxxxxxx>
Date: Wed Dec 18 11:17:40 2019 +0100
net: stmmac: RX buffer size must be 16 byte aligned
[ Upstream commit 8d558f0294fe92e04af192e221d0d0f6a180ee7b ]
We need to align the RX buffer size to at least 16 byte so that IP
doesn't mis-behave. This is required by HW.
Changes from v2:
- Align UP and not DOWN (David)
Fixes: 7ac6653a085b ("stmmac: Move the STMicroelectronics driver")
Signed-off-by: Jose Abreu <Jose.Abreu@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 5ac48a594951..a2b7c685cbf1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -55,7 +55,7 @@
#include <linux/of_mdio.h>
#include "dwmac1000.h"
-#define STMMAC_ALIGN(x) __ALIGN_KERNEL(x, SMP_CACHE_BYTES)
+#define STMMAC_ALIGN(x) ALIGN(ALIGN(x, SMP_CACHE_BYTES), 16)
#define TSO_MAX_BUFF_SIZE (SZ_16K - 1)
/* Module parameters */
