Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ec21b6b4 authored by Srikanth Thokala's avatar Srikanth Thokala Committed by David S. Miller
Browse files

net: emaclite: add barriers to support Xilinx Zynq platform 



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

Signed-off-by: default avatarSrikanth Thokala <sthokal@xilinx.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 243fedd5

drivers/net/ethernet/xilinx/xilinx_emaclite.c

+13 −0
Original line number Diff line number Diff line
@@ -220,6 +220,13 @@ static void xemaclite_aligned_write(void *src_ptr, u32 *dest_ptr, 
		*to_u16_ptr++ = *from_u16_ptr++;

		*to_u16_ptr++ = *from_u16_ptr++;



		/* This barrier resolves occasional issues seen around

		 * cases where the data is not properly flushed out

		 * from the processor store buffers to the destination

		 * memory locations.

		 */

		wmb();



		/* Output a word */

		*to_u32_ptr++ = align_buffer;

	}
@@ -235,6 +242,12 @@ static void xemaclite_aligned_write(void *src_ptr, u32 *dest_ptr, 
		for (; length > 0; length--)

			*to_u8_ptr++ = *from_u8_ptr++;



		/* This barrier resolves occasional issues seen around

		 * cases where the data is not properly flushed out

		 * from the processor store buffers to the destination

		 * memory locations.

		 */

		wmb();

		*to_u32_ptr = align_buffer;

	}

}