From 8894298105f4cb41dfa41e0b0d3c40c3f7b92c44 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Thu, 19 Sep 2024 18:22:24 +0100
Subject: [PATCH] serial: pl011: Request a memory width of 1 byte

In order to avoid losing residue bytes when a receive is terminated
early, set the destination width to single bytes.

Link: https://github.com/raspberrypi/linux/issues/6365

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
 drivers/tty/serial/amba-pl011.c | 1 +
 1 file changed, 1 insertion(+)

--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -468,6 +468,7 @@ static void pl011_dma_probe(struct uart_
 			.src_addr = uap->port.mapbase +
 				pl011_reg_to_offset(uap, REG_DR),
 			.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE,
+			.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE,
 			.direction = DMA_DEV_TO_MEM,
 			.src_maxburst = uap->fifosize >> 2,
 			.device_fc = false,
