[PATCH 2/2] net: emaclite: add barriers to support Xilinx Zynq platform

[Srikanth Thokala]

This patch adds barriers at appropriate places to ensure the driver
works on Xilinx Zynq ARM-based SoC platform.

Signed-off-by: Srikanth Thokala <sthokal at xilinx.com>
---
 drivers/net/ethernet/xilinx/xilinx_emaclite.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/xilinx/xilinx_emaclite.c b/drivers/net/ethernet/xilinx/xilinx_emaclite.c
index 3a693a1..31b8b6c 100644
--- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c
+++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c
@@ -220,6 +220,7 @@ static void xemaclite_aligned_write(void *src_ptr, u32 *dest_ptr,
 		to_u16_ptr = (u16 *)&align_buffer;
 		*to_u16_ptr++ = *from_u16_ptr++;
 		*to_u16_ptr++ = *from_u16_ptr++;
+		wmb();
 
 		/* Output a word */
 		*to_u32_ptr++ = align_buffer;
@@ -236,6 +237,7 @@ static void xemaclite_aligned_write(void *src_ptr, u32 *dest_ptr,
 		for (; length > 0; length--)
 			*to_u8_ptr++ = *from_u8_ptr++;
 
+		wmb();
 		*to_u32_ptr = align_buffer;
 	}
 }
-- 
1.8.2.GIT